Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3144008.

The single spool holder worked great but I wanted to get multiple spools closer together inside my dry box.

Be very careful pushing in the bearings from the bottom. Keep them centered in the opening. A file will help to make the tabs smoother. <em><strong>Careful... The tabs can crack on assembly</strong></em>.