So as you can see in the pictures, everytime the printer finishes a section it moves up, goes to the new location, goes down and resumes to print. the issue is that it does not return to the Z-position that it should go to. I got a new mainboard from sovol support already and it didnt help me. so i thought maybe some of you had this issue before and know whats up. Im also in contact with the support. This printer was bought like a month ago brand new and i have yet to print anything successful with it.
Hello,
Have you turned on the ironing function on the slicer?
No its turned off.
Btw: It doesnt matter where on the bed i place the model or in what direction, it will always end up the same. I also tried different models and the same thing happens already in the firs layer.
How did you contact customer support?
Did you send an email to info@sovol3d.com with your order number?
Have you verified the belt tension for all 4 Z belts?
Normally you’d expect that “lost counts” or a loose grub screw to error down not up. With the power off use your hand to move each corner of the gantry up/down a few mm. Do they feel similar?
@mich0111 yes i did, they answered quickly and sent me a new mainboard. this didnt help tho so i thought i might ask here in the forum too in case someone had this issue before.
@cardoc good idea. i have checked the belt tension by “feeling”. compared to other printers i have they seem fine. But i can actually measure it with a freqency detector. i would need to know the frequency required tho to make sure.
Try this:
Belt tension calculator.xlsx (20.3 KB)
I’ve not seen a guide for the Z axis belts. The A and B belts that move the printhead X and Y get all the attention.
Seems to think the same parameters apply (150mm and 110Hz) for the Z.
Im not sure if it is the same. I measured the frequency with an Optibelt TT. Gantry is down in standard position. I measured in the middle of the belts. all of them are around 50Hz. I think 150Hz would be a bit extreme for those small belts. But i dont know, would be nice to know what Sovol considers to be okay on this Printer.
FYI: I have not tensioned or loosened the belts. This is how it came.
That doesn’t mean anything; belts can come loose on their own.
So out of curiosity i went to the printer and used a printed object that i had lying around to see if i can replicate this issue manually. I drove the nozzle to a position where it barely hits the object from above, then i drove the nozzle up and down by 1mm. i repeated this 50 times and then looked at where the nozzle is.
This is before:
This is after:
I dont see a difference in height there. this is weird. the z-hop while printing causes a huge difference after just 3 hops. but here in manual i can drive up and down 50 times and see no change…
What is the Z acceleration set to in your browser?
You could locate a z-hop in a g-code file. Paste the lines into a text editor x50. Save as hop.gcode then “print” the file.
150mm is the length. Move the gantry up until belt anchor measures 150 (5 15/16") below the center of the upper sprocket, then the "twang should be 110Hz.