I designed something big, a tennis table because I like playing this sport, for the construction I used wood and MDF, the thickness is about 20 mm.
After that, I edited each piece with AutoCad and then created a .dxf, with these archives dxf. I used PartWorks and create the configuration file.
The steps to get a good cutting is ensured that material is supported with some screws that not affect your design and also the cutting configuration should not pass for these screws.
When I finished to make all the pieces, I built the table and here is the resulted: