It took about 12 hours to print in draft mode. I changed from black filament to blue before the cutting bed finished printing. This will make it easier to see what I'm cutting. One tip for changing filament: pause the machine when it's in the middle of the inside structure. That way, if the new filament misses a spot, it won't affect your overall print. I modified this design slightly by adding a thin trough below the cutting surface. I'll use this often.