Squaring the Longmill after lifting it 3/4" for the Vortex

Community Support ❓ Something's Up
1

Longmill 30x30 Mk2.5
Tried to install the vortex rotary axis today

Help!

Today I put some 3/4" mdf under the gantry system of my Longmill 30x30 so I will have more room for the vortex that I assembled today.

I went back to the original installation instructions to reattach the gantry system to the table. I measured corner to cross corner and tightened everything up. The Longmill then skews badly by an inch or so. I repeated this 4 times with the same results. After the third attempt I loosened everything on the y-axis to relieve some imagined torsional stress.

After the forth attempt I used the x-y calibration tool in gSender. It recommend that I move my left rail back 8.4mm. I did so and got the same results as before (about an inch of skew). I then measured the cross corners and there is a difference of about .5 inches.

I have been at this for hours and at a complete loss.

I just noticed one of my v-wheels on the left rail is very difficult to move.

Do I need to take off my x rail and reinstall? Is there something else I can do?

Cheers,
DJ

2

@DJButcher Simply adding height to the Y gantries should not cause any issues wrt to squaring. I did it. Many others here have done it. That may not be particularly conforting to you at this point, but I am only trying to suggest that what you are trying to do has been done successfully, so you can be confident that you can do it, too.

3

Solved it. There was a loose pin on one of the stepper motors. When the motors would start the motor would skip a bit causing the skew as compared to the other motor. At steady current it would be ok. Thanks for getting back to me though. It was a very frustrating day.

4

@DJButcher It’s good that you worked it out. Have fun with the Vortex. I’m closing the topic.