Amoeba Striker Hop-up Adjust system mod
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Modified version of Shilskii's design for M4 hexagonal head bolt with better printability, and some other improvements.
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Modified version of Shilskii's design. I really like the original, but I had trouble reproducing all of the fine details with a 0.4 mm nozzle. To improve printability, I made the sides of the lower body thicker and flatter. The knurling on the original knob was also a bit too fine for my printer, and I wanted a more pronounced, "clicky" sound. :P
The knob has been redesigned to fit an M4×20 hex-head bolt. It can be mounted either over the bolt head or using the through-hole, depending on your preference—both approaches have their own advantages and drawbacks.
Compared to the original, this version has fewer knurls (48 instead of 60), but they are more robust and print more reliably. The knob has also been scaled up slightly to compensate for the loss of fine detail during slicing. Finally, I added a small reference dot to make alignment easier.
Print Settings
Printer Brand: Prusa
Printer: I3 MK3S
Rafts: No
Supports: Yes
Resolution: 0.3
Infill: 25%
Filament Material: PETG
Notes:
The knob needs to be printed slowly, mainly perimeters. External and small perimeters 15mm/s, ordinary perimeters 30mm/s. External perimeters first.