ABS is a sturdier plastic that's more resistant to heat, light, water, etc. The Dremel can only do PLA. The major difference when printing is that ABS shrinks w

ABS is a sturdier plastic that's more resistant to heat, light, water, etc. The Dremel can only do PLA. The major difference when printing is that ABS shrinks when it cools so you need to keep the base of the print hot to keep it from popping off of the print bed. So ABS is a little more work but is a sturdier plastic.