Qidi Q2 Q2C handle screw ramp
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Qidi Q2/Q2C handle screw ramp to prevent PTFE tube catching
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My first attempt, which was oval race-track shaped with a very shallow 20 degree leading edge still managed to catch the PTFE tube. So, I modified the design to be more inspired by cow-catchers on the front of trains.
I printed it in PETG and it press-fits nicely. It has not loosened after 20-hrs of printing at 60C chamber but you could always consider adding a small amount of glue or some double sided tape. Its such a quick print that you could set XY hole compensation (in OrcaSlicer) to -0.05 or -0.1 to a few simultaneous copies to get a much tighter fit.
I recommend using a very low layer height of 0.08-0.12mm to keep the leading edges as smooth as possible.
The slightly shorter side goes towards the edge of the glass so it won't impact the insulation on the top of the machine