Added Chamfer to Filament Path #3
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Added chamfer in filament path, makes filament not snag when using 3mm ID PTFE tubing.
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This update to the Sharkfin extruder adds a chamfer to the filament path. During operation with 3mm ID PTFE used in reverse bowdens, the filament tends to catch on the 2mm ID lip requiring the user to open the chamber to change filament. This commit changes the lip to 3mm ID along with a chamfered region to the 2mm ID filament path before the extruder gears. This should make opening the chamber for filament swaps much less frequent.
Before:
With added chamfer:
