RFQ guide · Procurement and specification
How to prepare an industrial 3D printing RFQ
A price is comparable only when every supplier quotes the same part, scope and requirements. A sound RFQ separates mandatory requirements from preferences and states open points explicitly.
In brief
A STEP file, drawing of critical features, quantity, application, environment and date are usually enough to start. Missing details should be marked open rather than silently assumed.
Technical basis
The 3D model describes geometry. It does not automatically describe function, acceptable deviation or surface.
- Include STEP as an editable solid model; use STL or 3MF only when tessellation is sufficiently fine.
- Mark critical dimensions with datum, tolerance and inspection method in a short drawing.
- Tie the CAD revision and file name together unambiguously.
Use and load case
Material and orientation can only be assessed when the real duty is known.
- State temperature range, UV, moisture and media contact.
- Describe the load: static, impact, cyclic or wear.
- State mating parts, assembly sequence and accessible faces.
Quantity and delivery model
A one-off, first batch and recurring call-off are planned differently.
- Sample
- Number of variants and purpose of test
- Production
- Annual volume, batch size and call-off rhythm
- Date
- State required date and latest dispatch separately
Printable template
RFQ worksheet
Complete with engineering, procurement and quality before sending.
Part name, number and revision
Files: STEP, drawing, reference photos
Sample, batch and annual quantity
Service temperature, load and environment
Critical dimensions and inspection equipment
Surface, colour and finishing
Delivery date, packaging and identification
Open points and permitted alternatives