Spool for tennis ball cannon string

thingiverse

This is a custom-designed spool engineered specifically for launching SpiderWire fishing line into the air with precision, utilizing a tennis ball as a projectile. The spool attaches securely to a 2.5-inch schedule 40 PVC pipe cannon, providing a stable platform for launching HAM radio antennas high into tree branches. While commercially available spools exist for bow fishing, they often require additional hardware modifications and aren't widely used, making this design a valuable alternative solution. Given the straightforward nature of the print job, users with large enough printers should expect to face minimal overhang challenges. The recommended print settings for optimal results include: Printer: TRESTLE Rafts: None required Supports: Not necessary Resolution: 0.2mm precision Infill: 20% density