Spring powered propeller launcher

Printing:

• (red parts - C-TECH premium line PETG, black parts - Sunlu neat winding PLA)
• everything printed with 2 perimeters 10% lines (rectalinear) infill
• spring and ratchet should be printed with PETG
• propeller
  • use HIPS or ABS if you can, printed on an ender 3 without an enclosure without issues
  • print with random z seam to minimize weak spots
  • light propeller offers better performance, at least with the PETG I used it broke after a few uses. HIPS WORKS (most likely ABS as well)
  • heavy propeller works with PETG but offers significantly lower performance (4 turns = ~1.5 m)
• shaft printed with a brim for better first layer adhesion

Assembly:

• follow the video
• attaching the handle can be tricky, be sure to have tweezers on hand to help guide filament pins into their respective holes.
• white pins shown in the video are bits of filament:
  • top and bottom plate connections - 4 x 20.6 mm (can be shortened after assembly)
  • bottom plate, ratchet, handle connection - max 24.2 mm
  • bottom plate, handle connection - 3 x max 15 mm
• glueing:
  • check if everything works before glueing
  • glue recommended - for best results use glue
  • glue optional - not using glue should have minimal effect on function, don't use unless it's coming apart

Use:

• wind the spiring by the propeller holder
  • (your results may differ, “Propeller light”)
  • 3 turns = ~ 30 cm hop
  • 3.5 turns = ~ 2 m
  • 4 turns = wasn't able to measure, highest mostly reasonable amount
  • 4.9 turns = most I was able to get, high chance of damage
• attach propeller
• push the trigger
• repeat