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.