Start from a file, not a description
A DXF or STEP file lets a shop measure the part directly instead of guessing dimensions from a text description. DXF is enough for flat, laser-only parts; STEP is needed once bends, welded features or assembled geometry are involved, because a flat pattern alone cannot show how the formed part fits together. A marked-up PDF or a clear photo with a ruler in frame can start a rough quote when CAD is not ready yet, but expect the firm number to wait for real files.
Material and thickness move the price more than shape does
Two parts with similar outlines can quote very differently once material and gauge are set, because they change cutting time, bend force, tooling wear and finish compatibility. State the exact material and thickness if known, or state the function (indoor enclosure, outdoor bracket, load-bearing panel) so the shop can recommend one instead of guessing and re-quoting later.
Bend count and tolerance decide how much engineering review happens before pricing
A flat, unbent panel can often be quoted almost immediately once material and quantity are known. A part with several bends, tight hole-to-bend distances or a stated tolerance class needs a short DFM pass first, since bend order, springback and fixture access can change what is actually achievable. Flagging this upfront avoids a quote that has to be revised after review.
Quantity tiers matter more than a single number
Sheet metal pricing is rarely linear, because setup, programming and fixturing cost the same whether one part or fifty are cut. Asking for a price at more than one quantity, such as a prototype quantity and a first production quantity, shows the real cost curve and avoids re-quoting when the order size shifts.
| Input | Why it matters |
|---|---|
| File type | DXF suits flat, laser-only parts; STEP is needed once bends or assemblies are involved; PDF or photos can start a rough estimate. |
| Material and thickness | Changes cutting speed, bend force, tooling wear and which finishes are compatible. |
| Bend count and tolerance | Multiple bends or a stated tolerance class usually trigger a short DFM review before a firm price is given. |
| Quantity tiers | Setup and programming cost is fixed per job, so price per part usually drops fastest between low and mid quantity tiers. |
| Finish and hardware | Powder coating, plating, PEM inserts and welding are priced separately from the cut-and-bend base cost. |
Next step
Use the guide to prepare a cleaner inquiry, then attach the best available files through the RFQ form. If an item is unknown, say so directly so the first reply can separate quote assumptions from confirmed requirements.