Thanks for the effort!
The size of the object is 30cm square.
Unfortunately it has the same error message when I upload it.
I'm beginning to think there is a problem with their own interface...
I try to upload it on this page:
https://kunststofplaten.be/product/helder-polycarbonaat-10-mm/
There is a button that says 'Selecteer uw bestand' which means 'Select your file' (to upload). When I do that, the error message appears in red.
These are the things they demand from the uploaded file:
- Make a 1:1 scale drawing, using the millimeter as the unit;
- Keep the contour lines of your drawing as thin as possible (0.2 mm or thinner) and make sure that the lines form a closed whole;
- Keep your DXF simple: preferably use circle, arc and line objects;
- Upload a separate drawing for each plate type;
- Make sure your drawing is as basic as possible: no size markings, hatches, area fills or frames.
- The maximum size of your drawing is 2 cm smaller than the chosen plate size.
- Export your file in millimeters and not in pixels, inches or centimeters.
- Is there an inside corner in your design? Make sure you give it a radius of at least 1 mm (the higher the better). This prevents the corner from being subjected to pressure and breaking the plate.
- Please note that there is a deviation tolerance of approximately 0.2mm per cutting line.