I was also wondering what is the benefit of hardware compensation. Software compensation could be done as a simple g-code preprocessing script and seems to work pretty well ... as long as your firmware supports moving x,y,z simultaneously But I can see the fun of the project Victorby vv_rr - General
Hey, I recently changed from a J-head to a E3D hot end. So far I'm quite happy after 10-15 prints with 3mm PLA. I have the (very subjective) feeling that the heater block emits a bit more heat and printing overhangs is slightly harder compared to the J-head / better cooling is required. However this might also be due to the fact that I haven't fully recalibrated everything after changing the hotby vv_rr - General
Hey, I had a very similar issue. In my case (not a mendelmax), the z motor mount was not exactly parallel to the z-axis (only slightly off). The flexible coupler (clamp style) compensated for the misalignment, however, there was no additional bearing on the motor side and i got z-wobble. Improving my z-motor mount completely solved the issues. Victorby vv_rr - Reprappers