Hi !
Thanks for the quick reply !
For the fan, I confirm, it's in. That's more the metallic part below that is scaping.
A this exact moment, I'm doing a calibration/test print (we moved it, so I check it's still ok). So I can't check your suggestions on the homing switch. But i'll check later, straight when finished.
Although I'm a bit puzzled. The head doesn't need to be on the rear left corner/touch the homing switch to scrape the wall.
Typically, if I start a print, the head is in rear left. It makes some kind a of shake, and goes to front left, waiting to heat up and extrude a bit of material. Then if I abort, it goes back to the rear left, and scraping all the wall going there.
... And that's after spending minutes to write that, that I noticed the home switch I guess you were talking about. At first I was puzzled because I was checking the one on the left wall (so I guess for the max rear position). But I just noticed the one screwed technically on the "lid"/top and that is clearly for the max left position. I'll check when the print is done. Thanks !
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gr5 2,224
This is a common problem and easy to fix. One thing you can often do is bend the fan back in by squeezing it but from the photo it looks like it's all the way in.
The other cause is the homing switch - it may have moved recently. Push the head around by hand and when it is all the way to the left you will hear a click. That's the homing switch. Locate it - it's in the left top rear corner. Just above it are 2 screws. They may be loose. Loosen the screws a bit and slide the switch to the right and re-tighten. This homing switch sets how far to the left the head will go - the max position.
You can also bend the metal part of the homing switch. But it can break so do it carefully. You can also glue something on to that metal tab of the homing switch - like a few sheets of paper or a toothpick or something 1mm thick (you only need to move the head to the right by 1mm when homing to avoid scraping).
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