I loved the concept behind Luke's 3D's original model but it didn't fit my daughter's toothpaste. I also found the model quite hard to assemble as the tolerances were tight and there was little to no horizontal expansion (elephant's foot) compensation built in.
So while I was lengthening the model I decided to make the following improvements:
- Increased shaft and body length by 10mm
- Increased tube slot width on the shaft and body slightly
- Added chamfer to all surfaces that touch the build plate to compensate for horizontal expansion
- Added a bump on the shaft to prevent the tip from coming out while removing the tube
- Stiffened up the ratchet arms
- Improved aesthetics (subjective :))
- Less post processing is required for assembly
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Printing tips
I've been printing the bodies in PLA and the handle, ratchet, and shaft in PETG.
- 0.4mm nozzle
- 0.2mm layer height
- Support is not required
- Print as shown in the attached screenshot (widest flat faces touching build plate)
Roland Deschain
