Feature Request - X Homing at Y100 to prevent breaking Brittle Filament

Bambu Lab H2 Series
1

After reading the tips and tricks in the PPA/PPS-CF printing guide | Bambu Lab Wiki about printing with brittle filaments, there is the advice to remove the PTFE tube of the H2 from the drag chain and reconnect it to the tool head with a loop.

However, a small adjustment to the homing procedure where the X homing is not done as far to the rear as currently (approximately Y225), but more towards the front of the printer (approximately Y100), the sharp bend (breaking the filament) in the PTFE tube is greatly reduced.
Therefore the requirement to re-route the PTFE tube before and after printing is greatly reduced, and only required if the tool head is required to move close to the far right of the print bed.

Since the initial homing motion is Y+ direction, and then the tool head is pulled back to start homing the X in + direction. i is quite easy to determine the correct Y position for homing X.

Only disadvantage might be that the homing takes 1-2 seconds longer.

@SupportAssistant is this worth a consideration?

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2

I would also like to see this change happen. I’ve been printing a lot of PPS on my machine and I have had to deal with a lot of “filament run out” errors. The homing procedure usually breaks the PPS in the tube at the start of a print. Requiring me to come back in about 5 minutes to push the filament up to the hot end to continue the print. The PPS printing guide on the wiki advises re-routing the ptfe tube to reduce bending. However, the guide is for a different model with a much smaller print head.

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