Spoolholder

// Jan 26 2017 corrected the size of the ballbeering hole in the 53mm holder, it was 9mm instead of 7mm
Made some other kind of spool holder. Faster to print than the good orignal, Not so complicate. Save each side with a double nut ...

You can also use ballbeering 608Z if you want.

Internal diameter for the spools: 51mm, 53mm, 57mm