Disappointing Rough Surface Finish - New UM2+ (Image heavy)
Hello Experts,
I bought a UM2 with 28 hours on it (so basically new). Tried a few prints and noticed that the surface finish was sort of disappointing. I posted results of my MiniCalTest here (note the surface finish😞
On Friday I received the UM Extrusion Upgrade Kit and installed it. I followed all instruction and also verified that all belts are tight, the axes are aligned and bed is leveled. I was hoping for improved surface finish, however I am not sure it improved i
To bring closure to this thread, I have solved this issue for at least my printer. I tried several different software fixes such as PWM vs. Bang-Bang control of heat bed etc, and none were helpful for me. The issue as @Torgeir has pointed out is that there is a significant voltage drop.
In the (poor) screenshot of the oscilloscope you can see the drop in the 24V line when the heat bed turns ON/OFF. The drop is around 400mV.
With more time (and will) I wanted
