Injection Mold RFQ Requirements: What Buyers Need Before Requesting Comparable Tooling Quotes
Figure 1.0: Example RFQ package structure showing CAD, 2D drawing callouts, resin specification, and validation notes used to establish a comparable tooling quote baseline.
To request a tooling quote that is accurate, comparable, and ready for engineering review and supplier comparison, buyers need more than a 3D file. A quote-ready injection mold RFQ should include 3D CAD, a 2D drawing with CTQ and datum references (tolerance feasibility for molded parts before quoting), resin grade, annual volume, cosmetic zones, validation scope, and commercial assumptions before suppliers make tooling decisions (injection molding DFM review checklist). Missing inputs change cavity count, steel selection, runner concept, trial scope, and re-quote risk, which is why buyers should align RFQ inputs before comparing suppliers. At minimum, the RFQ package should include a STEP file, a 2D drawing with CTQ callouts, the exact resin grade, target annual volume, and the required sampling or dimensional reporting scope.
Defines the CAD, resin, CTQ, and validation inputs suppliers need before quoting
Shows which missing inputs distort tooling assumptions, price, and lead time
Helps buyers compare cavity, steel, and validation scope instead of unit price alone
Figure 1.1: Example 2D RFQ drawing showing CTQ dimensions, datum references, cosmetic zone notes, and restricted gate areas.
Minimum Quote-Ready RFQ Package
A quote-ready RFQ package must include more than a standard 3D CAD file. To start a quote-ready engineering review, buyers must submit more than a 3D CAD file. The minimum package should include a 2D drawing with CTQ dimensions, datum references, and cosmetic zone notes. Injection mold design requires explicit part definitions to determine parting line strategy, side-action requirements, and ejection layout. Submitting a complete 3D CAD model in STEP, IGES, or X_T format, together with defined tolerance requirements, allows the supplier to review wall thickness, shut-off risk, and basic moldability before quoting. The 2D drawing should at minimum identify CTQ dimensions, primary datums, cosmetic surfaces, gate-restricted areas, and any dimensions that require first-article or full-layout reporting linked to tolerance feasibility for molded parts before quoting data pools.
Optional Inputs That Still Change Tooling Decisions
Secondary operations, annual volume, and lifetime tool volume directly change cavity count, steel grade, and runner architecture before steel is cut. A generic resin family is not enough because the exact resin grade changes shrinkage, wear risk, and surface-finish feasibility. Buyers can reference the structured Injection Molding Material Selection Guide: How to Choose the Right Resin to isolate critical parameters. For example, PA66 GF30 and unfilled PA66 do not drive the same wear risk, shrinkage behavior, or maintenance interval. Likewise, a 20,000-piece annual program and a 500,000-piece annual program should not be quoted on the same cavitation basis. Annual volume changes cavity count and mold class, which determines whether the program needs a single-cavity prototype mold or a multi-cavity hardened production mold.
What Buyers Should Lock Before Sending the RFQ
Before sending the RFQ, buyers should lock cosmetic requirements, finish expectations, and validation scope. Documenting an SPI or VDI finish code (SPI / SPE Mold Finish Standards (A1–D3): Chart, Applications & Inspection Checklist) changes gate placement and draft requirements to reduce drag marks, gate blush, and ejection scuffing in cosmetic areas. Defining FAI, full CMM layout, cavity-to-cavity study, or PPAP scope early prevents validation work from being omitted or added after the initial quote. Refer to the Injection Mold Validation Guide to standardize verification lines. Reviewing the part against an injection molding DFM review checklist before RFQ release helps align quoted tooling scope with actual inspection and approval requirements.
Quote-Ready RFQ Package
Input Category
Minimum Required
Strongly Recommended
Why It Changes the Quote
3D CAD
Complete part geometry file (STEP, IGES, or X_T)
Fully updated assembly files with mating components
Critical-to-Quality (CTQ) dimensions and defined datum planes
Full dimensional tolerance map with tightest geometric limits
CTQ and datum references define measurement burden, gauge requirements, and post-mold inspection fixtures.
Material Specs
Generic resin family or trade name (e.g., Polycarbonate, Nylon)
Exact manufacturer grade designation and filler ratio (e.g., PA66 GF30)
The exact resin grade changes shrink rate and wear risk, directly altering scale factoring and cavity steel hardness choice.
Production Volume
Estimated Annual Usage (EAU) projection
Total programmatic tool lifecycle volume requirement
Annual volume changes cavitation and mold class, determining whether an automated multi-cavity system or cold-runner prototype is viable.
Surface & Aesthetics
Basic callouts separating cosmetic from non-cosmetic faces
Standard industry finish codes (SPI/VDI) and mapped cosmetic zones
The finish code changes gate placement and draft requirements to manage polishing limits and prevent scuffing during ejection.
Quality Validation
Standard out-of-tool inspection sample count
Detailed FAI, full CMM layout, cavity-to-cavity study, or PPAP Level 3
Validation requirements define quote scope, engineering hours, and the boundary between included trial work and additional approval cost.
Commercial Terms
Target lead time expectations and destination port
Incoterms and specified amortization boundaries
Commercial terms affect delivery planning, export packaging, tool ownership boundaries, and whether logistics cost is included in the quoted program scope.
What should be included in an injection mold RFQ?
An injection mold RFQ must include a 3D CAD model, a 2D drawing detailing critical tolerances and primary datums, the exact resin grade selection, annual and program production volumes, documented surface finish codes, and quality validation deliverables. These inputs reduce supplier assumptions and make tooling quotes more comparable.
Why Injection Mold Quotes Become Inaccurate
Figure 2.0: Matrix showing how missing RFQ inputs change supplier assumptions, tooling decisions, and downstream quote variance.
Missing Resin Grade Changes Shrinkage, Wear, and Steel Assumptions
If the exact resin grade is not defined, suppliers must make assumptions about shrinkage, wear risk, and steel selection. A generic resin family does not define the actual shrinkage rate, filler content, or abrasion risk of the production material. For example, PA66 GF30 and unfilled PA66 do not drive the same shrinkage behavior, wear risk, or steel-hardness requirement. The exact resin grade changes mold design assumptions because fillers such as glass fiber increase wear risk and may require different core/cavity steel hardness, gate sizing, and maintenance expectations. Sourcing teams can review these requirements via Injection Molding Material Selection Guide: How to Choose the Right Resin paths. Suppliers should confirm resin-driven wear and tool-life requirements before quoting, especially when steel selection depends on filler content, corrosion risk, or expected mold life based on the how to select injection mold steel based on resin wear and tool life roadmap.
Undefined CTQ and Tolerances Increase Quote Conservatism
When drawings do not define CTQ dimensions, suppliers assume higher execution risk. Suppliers add quote buffers when tight but undefined features may require tooling rework after T1. Without defined CTQ and tolerance limits, suppliers must price for tighter process control, added inspection fixtures, and more tuning during early qualification. When CTQ features are not identified, suppliers usually quote against standard commercial tolerances and add margin for extra tuning, fixture design, and dimensional reporting. This cost exposure can be calibrated directly against a baseline tolerance feasibility for molded parts before quoting evaluation.
Missing Volume Data Leads to the Wrong Cavitation Strategy
Production volume directly affects mold class, cavity count, and runner strategy. Without Estimated Annual Usage (EAU), suppliers cannot align cavity count, cycle-time assumptions, and tooling economics to the actual program volume. Missing volume data often leads to the wrong cavity count, which can result in either unnecessary upfront tooling cost or insufficient output capacity. A 20,000-piece annual program and a 500,000-piece annual program should not be quoted on the same cavity-count and mold-life basis. Aligning these numbers within an injection mold cost, lead time, and ROI decision guide stabilizes financial projections early.
Undefined Finish and Cosmetic Zones Change Gate and Parting Logic
Surface finish requirements and cosmetic zones affect gate location, parting line placement, and ejector visibility. If surface texture requirements or cosmetic faces are not defined, engineers must make assumptions about gate location, parting line placement, ejector layout, and texture-safe draft. A finish change from a non-cosmetic industrial surface to SPI-B1 or a defined VDI texture can change gate visibility, draft requirements, and allowable ejector locations, which buyers can cross-examine using the SPI / SPE Mold Finish Standards (A1–D3): Chart, Applications & Inspection Checklist framework. If a high-gloss or textured cosmetic requirement is added after quotation, the supplier may need to revise gate location, parting line strategy, or ejection layout, which increases cost and delays tool release.
Unclear Validation Scope Creates Hidden Cost After T1
Validation work adds inspection hours, reporting scope, and approval time after T1. When validation requirements are not defined in the RFQ, suppliers usually quote only a basic sample submission. If validation scope is not defined, many suppliers will quote only molded samples with basic visual review, not full dimensional layout, cavity-to-cavity comparison, or PPAP documentation. Sourcing managers can standardize these expectations beforehand through the Injection Mold Validation Guide. If the program later requires a cavity-to-cavity CMM report, full FAI documentation, or PPAP elements, that work is added after the initial quote. The result is a re-quote, added validation cost, and slower approval during the T1 correction loop.
Missing RFQ Input vs Supplier Assumption Matrix
Missing Input
Typical Supplier Assumption
Tooling Decision Affected
Cost Risk
Lead Time Risk
Resin Grade
Unfilled resin with generic shrink rate (e.g., standard nominal 1.5%)
Steel family selection, core/cavity hardness, and gate sizing
High (Inaccurate sizing)
Medium (Mold re-cutting)
CTQ / Tolerances
Standard commercial tolerances unless specific CTQ or geometric tolerance limits are identified
CMM reporting hours, FAI capacity, and PPAP documentation scope
High (Inspection charge-backs)
High (Extended approval lag)
Why do mold quotes become inaccurate?
Injection mold quotes become inaccurate when the RFQ omits critical engineering inputs such as the exact resin grade, annual volume, CTQ dimensions, finish requirements, and validation deliverables. Missing data forces suppliers to make baseline assumptions regarding steel hardness, cavitation strategy, gate locations, and inspection overhead, leading to structural re-quotes later.
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RFQ Inputs That Directly Change Tooling Architecture
Part geometry directly affects parting line strategy, side-action requirements, and shut-off design. Features such as external tabs, internal lips, or cross holes may require side actions or slide cores so the part can be released without damaging the geometry. Internal undercuts may require angled lifters, collapsible cores, or other dedicated release mechanisms to clear the geometry safely. When vertical walls create thin shut-off areas parallel to the mold opening direction, insufficient relief can cause steel wear, flash, galling, or early shut-off risk damage. Features that create side undercuts, thin shut-off steel, or deep internal retention should be identified in the RFQ because they directly affect side actions, lifters, insert strategy, and tooling cost, which can be initially evaluated using an injection mold design decision guide before steel cut.
Resin Grade, Fillers, and Abrasion Risk
Resin grade and filler content directly affect wear risk, corrosion risk, and steel selection. Processing a glass-filled resin such as PA66 GF30 may require hardened wear zones, upgraded core inserts, and localized wear protection in high-erosion areas. Glass-filled resins increase wear risk, while corrosive or flame-retardant grades may change corrosion resistance requirements and coating strategy. Buyers can reference the structured Injection Molding Material Selection Guide: How to Choose the Right Resin to verify base properties. Without the exact resin grade, suppliers cannot define the right steel hardness, coating strategy, or wear protection required for long-term tool life.
Annual Volume, Mold Life, and Cavity Count
Annual volume and target mold life directly affect cavity count and runner architecture. Higher-volume programs may justify moving from a single-cavity concept to a multi-cavity production mold. Production volume and expected tool life help define the appropriate SPI Class mold class, such as a hardened production tool versus a medium-duty mold. That decision also affects runner choice, from a simpler cold runner layout to a balanced hot runner or valve gate system. A 20,000-piece annual program and a 500,000-piece annual program should not be quoted on the same cavity-count, runner, or mold-life basis. Standardizing these inputs via an injection mold structure selection guide stabilizes commercial boundaries.
Finish, Texture, and Draft Requirements
Surface finish codes change cavity surface condition, release behavior, and allowable cosmetic marks. A high-gloss polished surface usually requires tighter polishing control and more draft to reduce drag marks, scuffing, and release problems. If the RFQ requires SPI-B1, SPI-A2, or a defined VDI texture, the supplier must evaluate draft, gate visibility, and ejection marks against the cosmetic standard, which can be audited through the SPI / SPE Mold Finish Standards (A1–D3): Chart, Applications & Inspection Checklist indices. Deeper texture requirements can also change draft, shut-off design, and ejection strategy so the molded surface is released without tearing or drag damage.
Validation Deliverables and Inspection Burden
Validation requirements define the inspection, reporting, and approval work required after mold trials. An undefined validation scope changes quote scope because sample quantity, dimensional reporting, and approval work may be added later. Programs with stricter validation requirements may require additional trials, cavity consistency checks, and structured reporting before approval. A basic quote may cover molded samples and visual review only, while an expanded validation package can include FAI, full dimensional layout, cavity-to-cavity report tracking, Cpk studies, and PPAP documentation. Defining these requirements early via the injection mold validation guide ensures they are included in quotation scope and trial planning.
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RFQ Input vs Supplier Assumption Matrix
When key RFQ inputs are missing, suppliers fill the gaps with conservative engineering assumptions. This matrix shows what suppliers assume, what usually changes later, and how missing RFQ data creates cost and lead-time risk.
Standard commercial tolerances unless CTQ dimensions, datums, and geometric limits are clearly identified.
Slide fits, insert interfaces, and inspection alignment features are designed to baseline tolerances.
Medium-High Risk: Added quote margin up front, or unquoted steel adjustment and tuning after T1.
Annual Volume
A low-volume program basis or a standard single-cavity prototype setup.
Affects cavity count, runner choice, and the mold class used for the program.
High Risk: Higher unit cost, insufficient output capacity, or premature wear because the cavity count and tool level were quoted on the wrong volume basis.
Cosmetic Finish
A non-cosmetic baseline finish, such as a standard industrial surface or general texture, unless cosmetic requirements are defined.
Affects draft, gate location, parting line visibility, and ejector-mark placement.
Medium Risk: Drag marks, visible ejector marks, or gate relocation work after cosmetic requirements are clarified.
A basic sample submission with visual review only, not full dimensional layout, cavity-to-cavity study, or PPAP documentation unless requested.
Affects inspection hours, fixture or gauge needs, and CMM reporting time.
High Risk: Approval delays after T1 and added validation charges for FAI, CMM reporting, or PPAP work that was not included in the original quote.
What the Supplier Should Return With the Quote
A professional injection molding quote should define engineering scope, tooling assumptions, and included deliverables, not just tool price and piece price. Reviewing these items helps buyers confirm that multiple quotes are based on the same tooling scope, validation scope, and commercial boundary.
Mold Concept and Cavitation Basis
The quote should define the mold concept together with the stated cavity-count basis. The quote should state cavity count, mold concept, runner type, parting strategy, and whether side actions or lifters are required for the current part geometry. Suppliers should outline the parting line strategy, required side actions, slide travel, and shut-off clearance where relevant. This information helps the buyer verify whether the quoted mold matches the target press size and whether the part geometry adds side-action or shut-off complexity.
Steel Recommendation and Mold Life Basis
A clear core and cavity steel recommendation defines expected mold life, wear resistance, and maintenance burden. The steel recommendation should be tied to resin wear risk, corrosion exposure, and target mold life, not listed as a generic material note. Quotes should specify steel grades such as P20, H13, or 420 stainless steel, together with the target hardness range in HRC. Sourcing teams can evaluate these allocations alongside the how to select injection mold steel based on resin wear and tool life guide. This steel basis should align with resin wear risk, corrosion exposure, and the expected program volume.
Runner and Gate Assumptions
Runner and gate design directly affect vestige, scrap handling, cycle consistency, and cosmetic quality. The quote should identify the expected gate location and whether gate vestige is acceptable on cosmetic or functional surfaces. The quote should state whether the mold uses a cold runner, a hot runner, or a valve gate system, and where the gate is expected to be located. Gate-location assumptions should match the part’s functional surfaces, cosmetic zones, and assembly requirements.
DFM Risks That Must Be Closed Before Steel Cut
The quote should list any open DFM risks that must be resolved before steel cut. Any unresolved DFM issues should be listed as open items in the quote so the buyer can separate confirmed scope from pending engineering risk. At the quote stage, the supplier should flag unresolved draft limits, thin-wall risk, deep-rib ejection issues, undercuts, and any geometry that may change the tooling plan based on an injection molding DFM review checklist analysis. Closing these risks before mold build release reduces later engineering changes and quote drift.
Trial Scope, Reports, and Revision Boundaries
The quote should define the number of included T0, T1, or T2 sample rounds and the reporting package included with each stage. It should clearly state the dimensional-report scope, material certificates, and approval deliverables, including PPAP elements where required by the PPAP document checklist for injection molding programs. Sourcing teams can systematically govern these stages via the injection mold validation guide. The quote should also define revision boundaries, including what level of design change is included before re-quotation is required. Defining these boundaries early reduces surprise charges during mold trials, validation, and final approval.
How Buyers Should Compare Injection Mold Quotes
Buyers should compare tooling scope before comparing total quoted price. To compare supplier quotes fairly, buyers should review engineering scope before commercial totals. Standardizing engineering inputs ensures that suppliers are quoting against the same tooling assumptions and manufacturing scope.
Normalize Cavity Count, Steel, Runner, and Sampling Scope
Comparing bottom-line price without confirming cavity count and mold concept creates procurement risk. Two quotes should not be compared directly if cavity count, steel grade, runner type, or included trial rounds are different. A multi-cavity mold changes cycle time, tooling complexity, and long-term part cost compared with a single-cavity concept. Buyers should compare core and cavity steel grades, hardness targets, runner system, and gate concept across all quotes before treating them as comparable using an injection mold specification sheet template check framework.
Separate Tooling Price From Validation and Lifecycle Cost
Upfront tooling price is only one part of total program cost. Buyers should separate tool price from validation cost, maintenance burden, and lifecycle cost. Buyers should separate tooling price, validation cost, spare parts, maintenance responsibility, and logistics cost before evaluating total program value. Analyzing cross-vendor metrics through a standardized injection mold cost breakdown and tooling decision factors matrix reveals that a low tooling price may shift cost into tuning, validation, or maintenance later, which is why buyers should compare total scope before selecting a supplier.
Identify What Is Excluded Before Approval
Unclear exclusions often turn into added charges after quote approval. Buyers should confirm whether logistics charges, export packaging, gauges, sampling resin, and validation fixtures are included or excluded from the quote. Common exclusions include gauges, texture work, export packaging, customs duties, spare parts, sampling resin, and additional validation reports. This review helps buyers understand total landed program cost beyond the initial tooling price mapped in the export mold TCO beyond initial tooling price ledger.
Red Flags That Make Two Quotes Non-Comparable
Two quotes are not comparable if the included quality scope is different. Two quotes are not comparable if they differ in cavity count, mold steel, runner brand or system, included sample rounds, dimensional reporting scope, or PPAP/FAI deliverables. If validation requirements, hot-runner brand, included reports, or trial scope are not defined, a lower quote may simply exclude engineering work that another supplier has already included. Sourcing engineers can align these red-flag limits by tracing the Injection Mold Validation Guide boundaries.
How do buyers compare injection mold quotes fairly?
To compare injection mold quotes fairly, buyers must normalize engineering scope before evaluating price. Standardize cavity count, steel grade, runner system, and included trial rounds across all vendors. Buyers should also confirm what is excluded, especially validation work, shipping terms, and additional trial rounds, separating tool price from validation, shipping, and maintenance cost before making a sourcing decision.
When the RFQ Is Not Ready to Send Yet
If the part design is not ready for engineering review, suppliers will quote based on high-risk assumptions. Resolving these issues before RFQ release reduces re-quotes and protects the project schedule. If any of these items remain open, the supplier may issue a budgetary quote, but the RFQ should not be treated as final for supplier comparison.
Engineering Block
Thin Walls, Deep Ribs, and Undercuts Need DFM First
Thin walls, deep ribs, undercuts, and unresolved draft issues create molding and tooling risk before the RFQ is ready to send. Buyers should review these features against a before-steel-cut risk checklist because they can create fill imbalance, ejection problems, and shut-off complexity. If these geometry risks remain open, suppliers will add quote buffers or leave the tooling scope assumption-based. These issues should be closed through DFM review before quote approval, including parting strategy, draft, undercut release, and ejection method. Do not release the RFQ until draft direction, undercut release method, rib thickness, shut-off risk, and ejection approach have been reviewed.
Aesthetic Hold
Cosmetic Zones Are Still Undefined
If cosmetic zones are not defined before quoting, the supplier must guess which surfaces can accept gates, ejector marks, or parting lines. Tooling engineers must position parting lines, gates, and ejector locations to protect visible surfaces. When cosmetic boundaries remain open, the supplier may place a gate, ejector pin, or parting line on a visible surface, which can force tooling redesign after the appearance standard is finalized. Before RFQ release, buyers should mark visible surfaces, allowed gate areas, ejector-restricted zones, and required finish standards such as SPI or VDI codes.
Quality Hold
Validation Scope Is Still Open
Validation work can add significant inspection cost and approval time after mold trials. If validation scope is still open, suppliers cannot quote inspection and approval work on a consistent basis. If the requirement later shifts from a basic sample submission to cavity-to-cavity CMM reporting, capability studies, or PPAP-level documentation, cost and approval time will increase after T1. A basic quote may include molded samples only, while an expanded validation scope may require FAI, full dimensional layout, cavity-to-cavity comparison, capability studies, or PPAP documentation, which can be aligned using the Injection Mold Validation Guide.
Material Block
Resin Grade or Compliance Status Is Not Final
Mold dimensions depend on the shrinkage behavior of the selected resin grade. If the resin grade is not final, the mold scale basis, wear assumptions, and steel selection may all change. If the program later changes from an unfilled resin to a glass-filled grade, the tool may require steel correction, insert changes, or a different wear-protection strategy. Sourcing teams can audit these requirements using the Injection Molding Material Selection Guide: How to Choose the Right Resin paths. If compliance requirements such as RoHS, REACH, UL94, medical documentation, or automotive PPAP status are still open, the RFQ is not fully ready.
Downloadable RFQ Table and PDF
Preview of the 1-page RFQ sheet used for internal review and consistent supplier quote comparison.
Use this RFQ table to align CAD, resin, CTQ, tooling assumptions, validation scope, and commercial terms before sending the RFQ to suppliers, tracking standard boundaries established in the injection mold quotation checklist framework. Use the PDF first for internal review, then attach it together with the CAD file, 2D drawing, and final mold specification sheet when requesting supplier quotes mapped through our master injection mold specification sheet template asset. This PDF can be used alone for internal review, but supplier quoting should still include the CAD file, 2D drawing, resin information, and specification sheet.
What the PDF Covers
Project identity / revision / scope
CAD and 2D drawing inputs, including CTQ dimensions, datum references, cosmetic notes, and restricted gate areas
Resin family / exact grade / additives / compliance requirements
Cavity / runner / steel / finish
Validation / secondary operations / packaging
Timeline / Incoterms
How to Use the PDF
Internal engineering review
Buyer-side scope and budget alignment
Supplier RFQ package attachment
Side-by-side quote comparison sheet
Use the same completed RFQ sheet across all suppliers when comparing quotes side by side
Best used together with CAD, 2D drawing, and the final mold specification sheet for supplier quoting.
Example of a Quote-Ready RFQ Summary
Use these sample RFQ summaries to check whether your quote package is complete before sending it to suppliers. A complete RFQ summary helps suppliers review the same engineering inputs and return more comparable tooling quotes. These examples are not fixed templates for every program. Use them to check whether your RFQ defines the engineering inputs that change tooling scope, validation scope, and quote comparability.
Example for a General Industrial Program
Example RFQ summary for housings, covers, and general industrial parts with a standard validation scope:
Project ID / Revision: Terminal Cover, Rev A2
CAD Data Attached: 3D STEP part model + 2D drawing PDF
Exact Resin Grade: SABIC Cycolac ABS MG47, Black (No raw substitutions) — Material Selection GuideTotal Program Volume: 135,000 parts over 3 years
Annual Volume (EAU): 45,000 units/year
CTQ and Datum Basis:
- Latch engagement gap controlled to ±0.05 mm.
- Mating flange flatness limited to 0.12 mm maximum.
- Primary inspection referenced to 2D print Datums A, B, and C.
Cosmetic Zone Specifications:
- Face Zone A (top cosmetic surface): SPI-B1 finish required. No visible gate vestige, flash, or ejector marks allowed.
- Face Zone B (internal structure): Standard SPI-C2 finish acceptable.
Validation Deliverables:
- 15-piece T1 out-of-tool inspection sample lot.
- Full First Article Inspection (FAI) report covering all 2D print dimensions.
- Material certificate / CoC required.
Open Risks or DFM Items:
- If sink risk remains open at the internal structural boss intersections, the supplier should comment on gate-location options and whether a Moldflow review focused on sink risk and gate-location options is required before steel cut. Review guidance via the Moldflow Analysis Review Form checklist.
Quote Basis Note:
- Pricing should be based on the current revision only. Any tooling changes driven by design revision after quote approval must be reviewed separately.
Example for Regulated or High-Validation Programs
Example RFQ summary for regulated or high-validation programs requiring tighter dimensional control and formal approval deliverables:
Project ID / Revision: Fluidic Valve Housing, Rev B4
CAD Data Attached: Complete 3D STEP assembly + 2D GD&T drawing PDF
Exact Resin Grade: Covestro Makrolon Rx1805 Polycarbonate, Transparent
Total Program Volume: 750,000 parts over 5 years
Annual Volume (EAU): 150,000 units/year
CTQ and Datum Basis:
- Inner sealing channel diameter restricted to ±0.03 mm.
- Cavity-to-cavity part-weight variation must remain ≤1.2%.
- Inspection must reference primary datums X, Y, and Z.
Cosmetic Zone Specifications:
- Optical Window Face (Zone A): Clear SPI-A2 diamond-buff mirror polish. No parting line mismatch, blush, or flow marks allowed near the optical field.
- Mechanical Tracks (Zone B): SPI-C1 finish with explicit 2° draft clearance.
Validation Deliverables:
- PPAP Level 3 submission package required.
- 30-sample CMM dimensional layout report required.
- Capability studies for critical characteristics (target Cpk ≤ 1.67).
- Additional process validation records where required by the program, aligned to the Injection Mold Validation Guide boundaries.
Open Risks or DFM Items:
- Thin-wall filling boundary risk detected along the perimeter seal lip (0.75 mm thickness). Supplier should review fill balance and venting risk during quote-stage Moldflow analysis.
Quote Basis Note:
- Pricing should be based on the current revision only. Any tooling changes driven by design revision after quote approval must be reviewed separately.
Injection Mold RFQ FAQ
Short answers to the most common buyer questions about injection mold RFQ requirements, quote accuracy, and supplier comparison.
Q:
What should be included in an injection mold RFQ?
An injection mold RFQ must include a 3D CAD model, a 2D drawing detailing critical tolerances and primary datums, the exact resin grade selection, annual and program production volumes, documented surface finish codes, and quality validation deliverables. These inputs affect cavity count, steel selection, gate strategy, and the scope of inspection or validation included in the quote. These inputs reduce supplier assumptions and make tooling quotes more comparable.
Q:
Why do mold quotes become inaccurate?
Injection mold quotes become inaccurate when the RFQ omits critical engineering inputs such as the exact resin grade, annual volume, CTQ dimensions, finish requirements, and validation deliverables. When these inputs are missing, suppliers must guess the mold class, runner concept, and reporting scope, which can change both price and lead time later. Missing data forces suppliers to make assumptions about steel selection, cavity count, gate location, and inspection scope, which often leads to re-quotes later.
Q:
How do buyers compare injection mold quotes fairly?
To compare injection mold quotes fairly, buyers must normalize engineering scope before evaluating price. Standardize cavity count, steel grade, runner system, and included trial rounds across all vendors. Buyers should also confirm what is excluded, especially validation work, additional trials, gauges, and shipping-related cost. Buyers should separate tool price from validation, shipping, and maintenance cost before making a sourcing decision.
Need an RFQ Readiness Review Before Supplier Quoting?
Upload your CAD file, 2D drawing, and current RFQ package. We will review missing inputs that affect steel selection, cavity count, runner concept, validation scope, and quote comparability, and return a marked list of open RFQ gaps before supplier quoting.
