Dual wire spool holder

Since I'm lazy to make rod holding structure, tape is used in real holder
Wire guide in bottom for back spool to avoid wire interfere each other
All wire guiding hole is 3mm in diameter

This design is suited for
1) wire spool - Outer diameter : 60mm
2) wire spool - Inner diameter : 20mm
3) wire spool - length : 60mm

Hole for rod in holder is 18mm
Rod is 17.5mm in diameter for ease of assembly

Both Rod and holder body is tested-print with following setting:
1) 0.4mm printing nozzle
2) 0.2mm layer thick
3) 50% infill with Grid structure
4) supporting is needed for holder body