Overview
A DXF file is a 2D cutting instruction for flat parts. It should communicate only the geometry that must be cut, not a drawing sheet, title block, dimensions, hidden construction lines, or mixed manufacturing notes. A clean DXF allows faster quoting and fewer production errors.
DXF requirements
- Export the flat profile at 1:1 scale in the intended units.
- Use closed contours for outer profiles and internal cutouts.
- Remove duplicate lines, overlapping entities, text, hatches, title blocks, dimensions, and construction geometry.
- Separate cut, etch, bend, and reference layers only if the meaning is clearly described.
- Confirm material type, sheet thickness, quantity, and edge or deburring requirements outside the DXF.
What to include
| Element | Include? | Notes |
|---|---|---|
| Outer contour | Yes | Must be closed and represent the final cut boundary. |
| Internal holes and slots | Yes | Check minimum hole size against material thickness and process. |
| Bend lines | Only if clearly identified | For bent parts, STEP and drawing are safer than DXF alone. |
| Dimensions and title block | No | Place these in a PDF drawing, not in the cut layer. |
| Text or logos | Only if etched or cut intentionally | Label the operation and expected appearance. |
Scale and units
DXF files can lose unit context between CAD systems. State units in the project notes or drawing. If a 100 mm part is interpreted as 100 inches, the quote and production plan become invalid.
Bent parts
For sheet metal bending, a DXF flat pattern alone is not always enough. Upload a STEP/STP model of the formed part and a PDF drawing that defines bend direction, material thickness, bend radius, flange dimensions, finish, grain direction if relevant, and tolerances.
Laser-cut design rules
- Avoid holes smaller than the material thickness unless reviewed for the process and material.
- Keep narrow bridges, sharp tabs, and tiny slots realistic for the chosen sheet thickness.
- Use corner radii or relief where sharp internal features could create stress concentration.
- Plan deburring, edge break, and cosmetic surface requirements early.
- For nested parts or multiple quantities, confirm whether parts should remain tabbed or fully separated.
Cost and lead time
| Driver | Why it matters | How to reduce risk |
|---|---|---|
| Cut length | More contour length increases machine time | Simplify unnecessary decorative geometry. |
| Pierce count | Many holes or slots add piercing time | Use standard hole patterns only where needed. |
| Material thickness | Thicker sheets cut slower and may need stronger machines | Choose the thinnest material that meets function. |
| Finish | Deburring, coating, or brushing adds operations | Define only required finishes. |
Uretyco AI workflow
- 1DXF screening
The file is checked for scale risk, open contours, duplicates, tiny features, and unsupported geometry.
- 2Material questions
The assistant asks for material, thickness, finish, quantity, and whether the part is flat or bent.
- 3Quote calculation
Pricing considers sheet material, cut length, pierces, nesting, deburring, finish, and delivery.
- 4Supplier matching
Uretyco routes the job to suppliers with compatible laser cutting, bending, and finishing capability.
FAQ
- Can I upload a PDF instead of DXF? A PDF can clarify requirements, but laser cutting usually needs vector DXF geometry.
- Should dimensions be inside the DXF? No. Keep dimensions in the PDF drawing and cut paths in the DXF.
- Can Uretyco fix a DXF? The system can flag common issues, but the customer should confirm final geometry and revision.
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