Extremely high gantry twist
Hello, I'm trying to calibrate my V-core 4 500 after updating from hybrid to IDEX. During the beacon ratos calibrate i get this:
Gantry twist relative to the center
Extremely high gantry twist: 3052.809880μm.
You have significant scan/contact inconsistency which is indicative of mechanical problems, please investigate before resorting to software compensation.
What should I check? Before the IDEX assambly I didn't have any problem during the comission. I'll attach the height map and the message i got. My 3D printer is enclosed, I tried removing the upper door just in case the umbilical was causing any trouble but I didn't have any kind of improvement.
Any ideas about how to improve this? Thank you.
4 Replies
Things I checked: the Z axis looks fine, checked the toolhead has no excessive play; the beacon bolts were a bit loose so I screw them properly (still not working), the gantry doesn't have any play. Also changed the nozzle with a new one just in case some dirt were in the nozzle. Still not be able to finish it. Any ideas would be appreciated.
Check your belt tension, run the Belt tension graph thing (Can't remember what it's called)
Looking at the graph it makes the two lines should be roughly the same. Then you're going to want to make sure they are around the 60-70Hz range to get decent speeds.
That's what got mine to last week. I'm waiting on some CNC milled clips to get the belts tighter. But i'm running into an issue where I can't clamp the belts down withough breaking the plastic clips.
Do you have an IDEX? Because I think having 4 belts makes this complicated
I've got a hybrid. So I also have 4 belts. If I remember correctly I loosened all belts until they were barley to be used. Then I left the top belts alone and started working on the bottom ones first.
Using the core xy belt tension feature in ratos I was able to get the belts tight enough to use the printer. You'll then have to repeat the process for the top belts. But bare in mind if you have a 500 like me you're not going to be able to print super quick unless you replace the gantry with titanium tube and replace the belt clips with some CNC milled ones. In order to hit that 75hz mark you need like 6-7lbs of force on the belts and I kept braking the printed one.
The Titanium tube helps with first layers.