Solder spool holder with 624 ball bearings

thingiverse

Solder spool holder: Stand Shaft (inside the spool) 2 x 624 ball bearings Shaft inner diameter: 3.5 mm Shaft outer diameter: 14 mm Bearing hole diameter: 13.14 mm Bearing thickness: 7 mm Can be used with ball bearings 624, (inner 4 mm, outer 13 mm, thickness 5 mm) Instructions It functions properly but there's still room for enhancement. The stand section could use a redesign to provide more stability and less lateral movement. The current design lacks support and rigidity. Replacing the shaft with a 4 mm threaded rod along with an adapter would likely improve its performance.