// Injection molders · Quoting
Quotes for molded parts, drafted around the numbers your estimator sets.
For custom and contract molders. One job, tested on RFQs you already quoted. AI reads the package, fills your quote sheet from your own rates and resin prices, and keeps piece price and tooling apart. On new parts, cycle time, cavity count and the mold price stay blank for your estimator; on repeat parts they come from your records.
- Past RFQs
- 20 to 30
- Cycle and cavities
- Your estimator
- System access
- None
// The one job
An RFQ lands. Your quote sheet comes back mostly filled.
A buyer sends a drawing, a model, a resin callout and an annual volume, for one part or a family of them. Your estimator works out the shot, picks a press, judges the cycle and cavities, gets a mold price, adds secondary work and packaging, and writes the quote. Much of that is gathering facts already in the package or your rate sheets.
For the test, AI works through copies of RFQs you already answered and drafts your quote sheet line by line, every rate traced to your own sheets. Repeat parts and re-quotes get cycle time and cavity count from your records, with the source shown. On new parts those fields stay empty, beside a list of what the package left out.
from your rates
// What the estimator watches
Where a molded-part quote goes wrong
Material is priced on the shot, not the part. Resin cost starts from the shot weight, every cavity plus the runner, divided back across the cavities. A hot runner leaves little or no runner to pay for; a cold runner leaves one to regrind or scrap, and some customers forbid or limit regrind. Machine cost is the press's hourly rate times the cycle time, divided by the cavities. The draft shows each input and its source: your resin price list, your press rates, or a blank for your estimator.
A resin callout carries more than a name. A brand and grade followed by "or equivalent" still needs the customer's written approval for any substitute. Color may come precolored or as a concentrate at a let-down ratio, and the two price differently. A UL 94 rating holds only at the thickness on that grade's UL Yellow Card, and a colorant can affect it, so a V-0 callout on thinner walls becomes a question for the buyer. Medical parts add a grade listed as tested to USP Class VI or ISO 10993, a cleanroom class under ISO 14644-1, and validation work your shop may quote separately.
The tool is its own quote. Tooling sits apart from piece price, priced by your toolmaker or tool room. The RFQ may name an SPI mold class, from Class 101 for a million cycles or more to Class 105 for prototype tools of about 500 cycles or fewer, and an SPI finish from A-1 diamond buff to D-3 dry blast, or a texture number. Each moves the tool price, so the draft carries every callout into the toolmaker request and never prices the mold. Terms count too: one automotive supplier's published tooling terms bar a tooling invoice before full PPAP approval, and the draft notes terms like that on the tooling line.
Volume, families and transfers change the math. Cavity count usually follows the estimated annual usage, so a volume range needs a quote at each point your estimator picks. A family mold splits one cycle's cost across different parts, so a buyer who drops one part reprices the rest. A transfer tool, a customer's mold coming from another molder, may arrive with that molder's process sheet or with nothing; the draft uses only what is written and lists the mold evaluation as open. Ultrasonic welding, pad printing, heat-set inserts, assembly and packaging, from bulk boxes to returnable dunnage, come from your own rates.
Your reviewer. The owner names the person who knows your quoting best, usually the lead estimator, who checks each line against the quote that went out: shot weight and runner, resin price, press class, secondary and packaging lines, tooling callouts and every question raised for the buyer. Include a family mold or a transfer tool if you quote them.
// What you send
What your quoting desk sends
20 to 30 past RFQs
The buyer's package for each, drawings and models included, with the quote sheet your estimator built and the quote that went out. A mix of new parts and re-quotes makes the fairest test.
Your rate sheets
Press rates by tonnage class, secondary operation and packaging rates, and your scrap and margin rules, the way your estimator uses them. A spreadsheet or a page of notes will do.
Resin prices for those dates
The resin prices your estimator used when each RFQ was quoted, from distributor quotes or your price list, so drafts price material the way you did then.
The toolmaker quotes
The tool quotes behind those RFQs, so the tooling line in each draft can be checked. The draft carries a tool price; it never makes one.
An NDA, then copies
Signed before any drawing moves, since customer models usually carry the customer's own confidentiality terms. No login to your ERP or quoting tool. If drawings can't leave the plant, we build look-alike packages with you.
// Before it starts
Written down before the first RFQ moves
The owner and your lead estimator agree on these before anything is shared.
- Your reviewer
- Named by the owner, usually the lead estimator
- Repeat part
- Defined in writing, for example same mold, resin grade and press class
- Left blank
- Cycle time, cavity count and tool price on new parts
- Success criteria
- In writing, using your quote sheet and rate rules
- Price
- A range for live quoting, given up front
// Scoring
The quote you sent, beside the draft
| Compared on the same RFQs | What your estimator sent | The AI draft |
|---|---|---|
| Hours from package received to quote sheet ready for review | Filled in from your RFQs | Filled in from your RFQs |
| Resin grade, color and flammability callouts read correctly | Filled in from your RFQs | Filled in from your RFQs |
| Shot weight and runner treated the way your estimator did | Filled in from your RFQs | Filled in from your RFQs |
| Press class, secondary operations and packaging priced from your rates | Filled in from your RFQs | Filled in from your RFQs |
| Piece price and tooling on separate lines, with every tool callout carried | Filled in from your RFQs | Filled in from your RFQs |
| Cycle time and cavities carried from records on repeat parts, blank on new ones | Filled in from your RFQs | Filled in from your RFQs |
| Questions for the buyer that your estimator also asked | Filled in from your RFQs | Filled in from your RFQs |
// After a yes
About 30 days on incoming RFQs
After a yes, new RFQs get a draft quote sheet and a question list as they arrive, for about 30 days.
Your estimator fills the judgment fields, checks every line and decides what goes out. No quote reaches a buyer unless a person sends it, and the same scoring table runs through the live month.
// Later, ranked
Where quoting could lead
- 01Next
Tool change quotes
An engineering change turned into the toolmaker request, the piece price change and the requalification work, for your program manager to send.
- 02Then
PPAP packages
Part submission warrants and dimensional results by cavity assembled from your records, for your quality engineer to check and sign.
- 03After that
Resin pass-through adjustments
Each customer's resin clause applied to its parts when the index posts, with notices drafted for approval.
// One hard limit
It never sets a cycle time, a cavity count or a tool price.
On new parts those numbers come from your estimator and your toolmaker, and the draft leaves them blank. On repeat parts it carries forward what your records show and marks the source. Margin, the final price and what goes to the buyer are your calls, and defense and aerospace RFQs never come in.
Molded-part quoting gets its own price: a range before the test, a fixed price before you sign.
The range depends on how many RFQs arrive in a month and how many are re-quotes of parts you already run.
// Questions
Quoting questions
Can AI work out the cycle time from the wall thickness in the model?
Our buyers give a volume range instead of one annual number. How is that quoted?
Does it get mold prices from our toolmakers?
We mold for medical customers. Do those RFQs fit?
Do we have to change how we quote?

Rob Eason, founder
// Book a proof of concept call
Test it on RFQs you already answered.
Thirty minutes with Rob. You'll be asked for your company and role, the job to test, and roughly how many RFQs your estimators see in a month. Hold drawings and models until the NDA is signed.
- Co-owned a 60-employee financial services firm and sold his share to his partner.
- Ran GOSO Technologies, a Boston solar company rated 5/5 across 24 Google reviews.
- 5/5 across 83 reviews in HighLevel's Certified Admin Directory.
- 4.3/5 from 6 Google reviews of Massmarket AI.
- Every directory and Google review, critical ones included, is shown word for word at massmarket.ai/reviews.
- Takes every proof-of-concept call himself.
