Slightly Wrong X-Y home position

Hello everyone,

I’ve bought X1C 3-4 of weeks ago and been loving it. Last week I had some issues with layer shift after “first layer inspection” out of blue. I had removed some dust cover mods that I installed (even though they were not related to this) and re-tensioned the belts following the Bambu Lab guide. I have solved the layer shift after “first layer inspection” but now I feel like my Y home position is slightly off than what I used to have.

As you can see on the first picture, the line on the up-right is almost at the end of the plate. There is no gap between the end of plate and the line. Almost printing out of the plate.

Also when I was writing this I noticed a slight angle between 3d printed line at lower position and the 2d printed line on the plate. There is a 0.5 mm difference between the ends of the 2d printed line on the plate and 3d printed line. I believe it would be higher if the 2d printed line on the plate went all the way to the left of plate. I suspect since this line is straight X axis movement in the g-code, there might me a little bit skew. Is there any way to compensate this?

When I check the Bambu Studio or OrcaSlicer I see a little bit gap between the line and end of the plate. but I can’t check the dimension of the gap since there is no measurement tool.

You can see from the photos below that there is nothing that blocks the Y axis movement when homing. The printer is stripped down to stock there isn’t any mod right now.


I am lost at the moment. Am I overthinking that Y axis is not homing correctly or have you seen the slight shift in the y home position.

Can you help me?

Thank you in advance.
Bora

This problem usually turns out to be a bent nozzle. Maybe a result of the dust cover mods?

Rarely, the bed is loose. If you can shift it to the front or rear, push it to the rear and tighten the six mounting screws. (2 in middle back, 2 each side near the front)

2 Likes

That’s where mine has printed since it was new.

Simple yet clever idea. Thank you. I will try that.

This problem usually turns out to be a bent nozzle. Maybe a result of the dust cover mods?

Well I didn’t put any mods that can crash to nozzle. Mods were just dust cover of Z axis rod bearings and stepper motor. I don’t think they would cause the nozzle to bend.

Questions are I haven’t even removed the nozzle or hotend, how would it be bent? Is it prone to bending? Isn’t it stainless steel or something? I wouldn’t think that stepper motors could bend the nozzle. How can I be sure if it is bent or not and should I replace it if it is? (question bomb)

Thank you in advance.
Bora

So I shouldn’t be worried about that, should I?

As long as the nozzle isn’t bent or hitting the alignment stops in the corner, I personally wouldn’t.