On our self-build machine (1200x1200mm bed, 150W Reci tube, closed loop NEMA23 steppers) we have the Cohesion3D motherboard.
It all works great, especially with Lightburn side-by-side it is a relieve compared to the old system we had. However, there is one small problem with mostly the Y-axis (to axis from the laser tube towards the front of the machine).
While cutting (several speeds tried, ranging from 10 to 40 mm/s, all on 5% power) we see an obvious wobble in the line. We have done the following to try and bring it down but still with minimum results:
- belt tensions
- different belts (now running PU HTD 5M 15mm with internal steel wire reinforcements)
- Bringing down the junction_deviation as far as 0.001 and acceleration down as well
Also, the start and stop location vary slightly which might become a problem in thicker materials…
Anyone encountered these problems before?