CSMFG / Extrusion buyer guide
Low volume custom aluminum extrusion.
Make the cross-section you need, then choose a quantity that fits the project. Compare tooling, parts and delivery before committing to a prototype or small production run.
Can I order a small batch of custom aluminum extrusion?
The CSMFG calculator accepts custom aluminum extrusion projects without a minimum piece quantity. You can configure a low-volume order and see its estimated die cost and part pricing. A small piece count still needs a manufacturable cross-section, appropriate alloy and temper, and an approved production drawing. No minimum quantity does not remove engineering review or guarantee that every shape can be produced.
For a prototype, first decide what you need to learn: the section’s fit, its material properties, its surface appearance or its performance in an assembly. Specify the features that matter to that test. A clear prototype requirement makes it easier to review the drawing and decide whether a custom die is justified.
Choose between an existing section and a new custom die
| Route | Useful when | What to check |
|---|---|---|
| Existing standard profile | A catalog cross-section already meets your geometry needs. | Availability, dimensions, alloy, temper, cut length and any machining. Standard profiles under one metric tonne carry a $45 small-order fee in the current calculator. |
| New custom extrusion | You need a specific section that an existing profile does not provide. | Die cost, section feasibility and the full first-order total. A new custom mold has no small-order fee in the current calculator. |
| Machined prototype | You want to discuss checking a few critical features before committing to extrusion tooling. | Ask engineering whether the geometry, material condition and test purpose make machining a suitable alternative. This requires a separate review and quote. |
A standard T-slot or tube is useful only if it meets your design. Its zero-new-die price does not establish the price of a custom section. If you need standard framing, use the calculator’s stock profile browser. For a new cross-section, upload your own geometry and review the new-die line.
Compare quantities without hiding the tooling charge
Run the same section at the quantities you can use, such as 10, 25 and 50 pieces. Keep the cut length, alloy, temper, finish and shipping destination unchanged so the comparison answers a useful purchasing question. Review the parts-only price, separate die cost, total goods amount and freight estimate.
Tooling can be a significant part of a small first order because it is spread over fewer pieces. The effective delivered cost per piece is the full order total divided by the number of pieces, including tooling and applicable delivery charges. Compare that figure with the total cash required; buying more than you need can save on one figure while increasing the other.
Compare the same geometry. The calculator’s working example lets you explore the process without a file. It is a demonstration configuration, not a promise that your section will have the same tooling, part or shipping price.
See the extrusion die and tooling cost guide for the cost breakdown. For a later repeat order, confirm die availability and the approved drawing revision with CSMFG before assuming the same tooling can be reused.
From a cross-section picture to a prototype quote
- Prepare the section. Use DXF or STEP when available. For a picture or PDF, provide a clear filled cross-section and at least one reliable overall dimension.
- Recover and check geometry. The picture-to-DXF tool traces the section. Review scale, internal holes, narrow slots and thin walls before continuing.
- Configure your batch. In the extrusion calculator, set the length, quantity, alloy, temper, machining and finish. Check the area, weight and die cost.
- Review the order scope. Estimate delivery, download the quote and send any critical tolerances or test requirements to engineering.
- Approve the production drawing. Complete drawing sign-off before manufacturing. A traced outline or automatic DFM result does not replace that approval.
What needs review before a small run?
Mark the dimensions that must mate with another part and the surfaces that will be visible. Show hole positions, taps and cut-end requirements separately from the extrusion’s constant cross-section. Specify the required alloy and temper instead of choosing only by price. Include the target finish, shipping destination and required date so the production scope can be assessed.
The calculator offers anodizing and powder coating options and notes their added processing time. Use the current configuration and engineering confirmation for your schedule rather than treating the prototype quantity as a promise of immediate delivery. Tooling, drawing approval, machining and freight can each affect the order.
Planning beyond the prototype
If you expect repeat production, include your likely batch size, annual demand, inspection requirements and drawing revision. Those details help connect the prototype to the next order. Larger sections, special alloys, tight tolerances and complex machining should be discussed through the aluminum extrusion manufacturing page rather than inferred from the online tool’s standard options.
This guide reflects the calculator’s fee rules on November 1, 2026. Confirm the current quote and engineering review for your project. Send a drawing through CSMFG’s project inquiry page if you need help selecting a route.