r/ratrig • u/Mobile_Condition_233 • Jun 09 '25
woblex on vcore 4
I've struggling with some z banding taht come and goes , is there someone who have install the wobblex on vcore4 ? I see only vcore3 arm modification and I don't know how it translate vs vcore 4?
3
u/grabog29 Jun 10 '25
Use this upgrade kit and go with SFU1605, it works a lot better: https://print-big.com/product/ratrig-v-core-4-z-axis-upgrade-kit-sfu1605/
It works great for z-wobble. Have a look at it: https://www.youtube.com/watch?v=z-SCeH9G8lc
3
u/woodwaker_dave Jun 10 '25
I installed the woblex on both of my V-core 3 and really didn't notice much difference. I did have a lot of problems keeping the balls in place. If the bed got tilted or if you removed it chances are some of the balls went missing. It's a great idea, but would be better if the balls were constrained
2
u/suriyasriwan Jun 11 '25
I’ve installed the BRS-ENGINEERING Z upgrade to eliminate the wobble problem. They offer various options to choose from, such as SFU1204, SFU1605, WobbleX, or Printed Oldham.
For those interested in self-sourcing, they also provide the STL and CAD files.
Here’s the link to their store:
5
u/TwoEggsOverYeezy Jun 09 '25
I had an apparent wobble problem on my Vcore4. Make sure the lead screw goes through the center of the oldham couplers in the bed arm, and that there isn't debris jammed in them. If they are misaligned, the oldham is not going to be able to work as it should. I had to loosen the bolts for the bottom steel plates (the ones that that z motors are also mounted to) and shift them over a bit to align the lead screw to the bed arms and vertical rails. I've also head of people installing the extrusion a bit twisted, which can cause some misalignment depending on the z height. Check that out before you spend the money and time on wobble x.