Can I Quote Injection Molding Before the Design Is Final?
What Does It Mean to Quote Before the Design Is Final?
Teams ask can i quote injection molding before the design is final when electronics, seals, or cosmetics are still moving. An early quote uses the current solid and the RFQ notes you can stand behind today. It is a planning number plus DFM flags, not a freeze of the steel.
When the solid or the notes change, the next quote is a new package. Read why instant quote changes after CAD review. This page only answers timing.
Key Facts
- You can upload CAD before every face and resin grade is locked.
- Early review is useful for moldability and cost drivers, not for a frozen price.
- Mark pending faces, pending resin, and pending tolerances on the RFQ.
- A later revision needs a new quote record tied to the new revision ID.
- DFM feedback is part of quoting. See injection molding DFM review.
- No prices or lead times appear on this page.
- Upload the current solid on the injection molding instant quote platform.
What an Early Quote Is For
Find undercuts, keep-outs, and thick sections while the solid can still move. Give sourcing a planning range labeled as revision-bound. Do not treat the first click as a purchase order.
Find undercuts and thick bosses while CAD can still move
An early upload is for moldability notes you can still act on. Read DFM flags before tooling release for the design-side list. The first record is a planning estimate bound to one revision, not a steel release.
Settle a grain-vs-tight-band argument before steel
An early quote is also useful when two teams disagree about whether a face can hold a grain or a tight band. The flag arrives while the CAD can still change. That note is cheaper to take now than after steel is cut.
What to Mark as Not Final
Pending faces — name them, do not write "WIP"
Faces that will change after electronics or seal reviews. Write the face name. A generic WIP note does not help a reviewer.
Pending resin — family known, commercial grade open
Resin family known, commercial grade pending. List the filters you already know: heat, impact, chemical, cosmetic.
Pending cosmetic — show faces still matter even if grain system is open
Cosmetic grain or polish not yet picked. Say which faces are show faces even if the grain system is open.
RFQ Checklist
Numbered steps:
- Export the current released-for-review solid.
- Write design not final plus the revision ID in notes.
- List pending resin, finish, and tolerance items.
- When the solid changes, follow how to re-quote after a CAD revision.
- Upload CAD through the injection molding instant quote platform.
If a teammate wants to wait for a final file, ask which pending item blocks DFM. Most pending items do not. Upload now, then re-quote.
A Worked Example
A sensor bracket still has an open connector keep-out. The resin family is nylon. The commercial grade is not picked. The 2D is two weeks out. The team can still upload the current solid today. Write design not final, name the keep-out face, and list nylon plus the filters you already know: heat, moisture, and a wear surface.
DFM can flag the keep-out and the thick boss while those faces can still move. Sourcing gets a planning number bound to revision C. When the connector freezes and the grade locks, re-quote revision D. The first record is not wasted. It is the reason the boss changed before steel.
If the team waits for final, they often wait until the 2D title block is signed. Waiting for the 2D title block is later than DFM needs. Final for quoting means the faces you can stand behind today, plus a written pending list.
Common Mistakes
Uploading a solid and saying nothing about pending faces. Reviewers will treat open faces as locked.
Sending three early quotes with three different pending lists and asking sourcing to pick the lowest number. They are not the same program.
Waiting for the 2D when the only open item is a balloon on a non-critical edge. Start with 3D. Mark 2D pending.
Treating an early quote as a freeze so nobody will upload again. Write not final on the record so the next revision is expected.
What to Tell Sourcing
The current number is bound to the current revision and the pending list. It is usable for planning. It is not a freeze. When the keep-out or the grade locks, a new record will replace it. Keep the old record so the delta is visible.
If they want one number for a budget gate, give them the revision ID and the pending list with that number. A budget gate without a pending list will be reopened later.
Do not wait for the 2D title block if the solid can already show DFM risk. Mark 2D pending. Upload now.
If two early quotes exist, do not pick the lower one without reading the pending lists. The lower early quote may just have more faces still open.
