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Rat Rig Community [Unofficial]•5mo ago•

4 replies

rms497

bed mesh running at START_PRINT has significant offset applied

I recently started having some very poor quality prints. I noticed the skirt loops on the print were very compressed down into the bed. I figured it was bad filament, maybe needed drying or something, so I stuck it in for a drying cycle. WHen it came out it was still happening and then started occuring when using the sceond toolhead. In looking at the bedmesh that is created from the START_PRINTmacro I see that there is a significant offset that appears to be applied. In order to fix I heated the bed/chamber/hotend to printing temperatures, performed a z-tilt and then a bed mesh. This appeared totally normal and looked perfect. So I kicked off another print and same thing happened. Next I disabled the bed mesh from START_PRINT, set the default mesh to use as the one I just created (in the properly heated environment) and every print has been perfect since. Just to see where things stood, I went back to letting ratos create the mesh from START_PRINT and very similar failure as before. Though instead of the offset being applied to squish into the bed it was far too high. Just to be sure I once again preheated the entire printer and created a bed mesh. It looked perfect, but in comparing it to the one ratos just created during START_PRINT, (it's named

ratos

ratos

so it's easy to find) I can see clearly this offset being applied. Attaching screenshots of my good mesh and this bad mesh. For now I'm just going to go back to a static, default bed mesh and disable the one that gets created in START_PRINT but ideally I would not have to do this. Anyone have any ideas on how to address this? Im not sure what could be going on and what could be causing this.