I made the threads with this http://www.thingiverse.com/thing:193647 . I like to keep these hubs on my spools for easy switching of filaments and it fits most of the spools i use including the cardboard ones. For very narrow spools you may need to trim some threads off by slicing a portion off the top of the bolt portion using 3d builder or other software or just by stopping the

print. I like the look of the bearings whether needed or not , and I usually buy extras or salvage them from roller blades

Print Settings

Printer:

p802M

Rafts:

Supports:

Doesn't Matter

Resolution:

Infill:

I used 15%

Notes:

Post-Printing =============

You may use a drill or reamer to clear for a 8mm or 5/16 pin, rod or dowel. Snap in 2 608 bearings for a free wheeling spool or don't clear out the inner diameter so there is some resistance.

How I Designed This

I made the threads with this http://www.thingiverse.com/thing:193647 and used sketchup for the rest

Many Thanks to Mike_Mattala for NUT JOB | Nut, Bolt, Washer and Threaded Rod Factory

Category: 3D Printer Accessories