Bed mesh compensation not working at all

I have tried just about every possible way to get the bed mesh compensation to work so i can get a decent first layer and nothing helps. My bed mesh is .125 repeatable at 105c bed 55c chamber and 150c hot end. I have the light weight x bar. The thermal coefficient is positive even at the correct layer height. I have been trying anything possible for 2 weeks... And i have multiple prints that i have to have done before i leave the state for multiple weeks and i cant get it to print the first layer for anything If anyone has any insight on how to fix the first layer issue would be very much appreciated
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3 Replies
frugdugabodo
frugdugabodoOP2mo ago
latest one, its almost like it prints down hill till it hits the bed. i have not changed any z offset as i have heard that can screw up how the compensation works. it starts perfect then gets worse. nothing i do will fix it so i can print anything over 40x40mm is unusable
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Jarda
Jarda2mo ago
same problem but with not enclosed printer
frugdugabodo
frugdugabodoOP2mo ago
I figured mine out. I had to save my printer.cfg and wiped the ratos back to stock and started over with an empty clean nozzle. You need a positive thermal compensation. Mine ends up about .080-.092 Then micro step your z offset and use save_z_offset while printing.

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