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Z Offset to fit 4mm Glass Bed
JamesMcc_Design
Posts: 6Member
Hello,
I have problems printing and i figure that it is due to the bed not being level. Not just a normal level the corners problem, but the bed itself bends. I can get around it by adding clamps to the side and printing within 5cm of the clamps, but that is quite useless as I need to reliably print in the centre also.
One idea I have is to use a glass bed which would not bend as much. The bed is 4mm thick, and to make it fit I would need to increase the Z home offset by a few mm (I can't just tighten the screws enough to take the bed low enough as they don't have enough screw).
I thought this would be a simple case of AUTOHOME -> MOVE AXIS -> MOVE Z -4mm -> SET HOME OFFSETS. After this sequence I thought that "auto home" would take me to this newly defined home.
But it does not work. Everytime I start a print the extruder moves all the way to the old home position (directly in the bottom corner) which, if I put the glass bed on, would cause problems.
Does anyone know either:
- how to stop the printer from going all the way to this old home?
- how to make it think that the newly defined home is where to go in autohome?
- another way to keep the bed flat???
Thanks for any advice!
I have problems printing and i figure that it is due to the bed not being level. Not just a normal level the corners problem, but the bed itself bends. I can get around it by adding clamps to the side and printing within 5cm of the clamps, but that is quite useless as I need to reliably print in the centre also.
One idea I have is to use a glass bed which would not bend as much. The bed is 4mm thick, and to make it fit I would need to increase the Z home offset by a few mm (I can't just tighten the screws enough to take the bed low enough as they don't have enough screw).
I thought this would be a simple case of AUTOHOME -> MOVE AXIS -> MOVE Z -4mm -> SET HOME OFFSETS. After this sequence I thought that "auto home" would take me to this newly defined home.
But it does not work. Everytime I start a print the extruder moves all the way to the old home position (directly in the bottom corner) which, if I put the glass bed on, would cause problems.
Does anyone know either:
- how to stop the printer from going all the way to this old home?
- how to make it think that the newly defined home is where to go in autohome?
- another way to keep the bed flat???
Thanks for any advice!
Comments
I used glass bed before. It was great, its just that its an added weight to move and my goal is to print fast.
So i scratched the glass bed, went to just blue tape and that aluminum heat bed. Much better result. Just be careful no to tear the bluetape when extracting the print.
I might consider getting tape and going directly on the bed.. the glass bed works but takes a lot of effort to get a good first layer - A lot of glue and usually a few attempts. Also yes I think the printer may be struggling a little with the weight, it is making more noise and sounds a bit clunky.
I did raise the stop switch in the end, maybe I misunderstood the z offset, but I thought it would be possible to set that directly on the printer - but it does make sense that it must go all the way down before setting the offset.
Cheers!
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