For cheaper (faster) parts avoid sharp corners, or tight radii.
Avoid tiny holes in thick materials.
Use AutoCad DXF or DWG files for best results in transferring files.
Your final part will be no more accurate than the CAD drawing you start with.
Brittle materials and laminates require special attention.
Contact us for your free 5 finger sample that demonstrates how much cutting you get for the same amount of money for each of 5 different cut edge qualities