Filament Sample Spool

The two sides just twist lock together, no glue or screws needed. Center hole is 35mm in diameter. Should be printable with about 14.2 meters of 1.75mm filament ( less than a standard filament sample from maker box of about 16m) going off of the estimate from my slicer (xyzware pro). Pics above show the remainder of the filament after printing only the spool and the type of filament, though I see no reason why this couldnt be printed with any type of filament. settings I am using of are 0.2mm layers, 3 shells, 3 top layers, 3 bottom layers, and 10% infill. The infill is somewhat important because there will be 4 layers of it on both sides of the spool. You can print it solid but will not be able to get both peices out of one roll of sample filament then.
*The two parts are not in the proper printing orientation*, not exactly sure why, I design them upright but then they seem to get flipped when converting to stl. Also only print the files ending with pt1 and pt2

In testing