Holes inside your part shouldn't cross each other

Bad: holes in the center of the part cross over each other

Good: two circular holes are joined together

Good: two circular holes are split apart

Your main outline shouldn't cross over itself

Bad: this outline crosses over itself in the center

Good: no lines cross in this outline

Don't let any two areas cross each other

Bad: the smaller and the larger triangle cross each other

Good: the two triangles are joined together

Remove the bill of materials, notes, charts, and other non-essentials

Bad: includes chart containing information about the part to be made

Good: includes just the part to be made, in a 1:1 scale

Upload only a single part

Bad: complex assembly of many parts. Big Blue Saw can't determine which part you want.

Good: a single part that Big Blue Saw can make. It's outlined in purple in the previous example.

Read the FAQ on what kinds of parts you can make with Big Blue Saw.