Hi There! I was just tired to measure my gantry corner values (although it seems to be good enough to have a coarse guess) and was thinking of calculating these values out of a simple measurement. Why is the world better with this? You do not have to do it manually and it should be much more accura…

Interesting proposal although I’m not sure why you need a really precise measurement - I’ve found being within 5mm on my Voron to be good enough. The only real concern I have with this approach is that it assumes/requires that your height measurements are nuts on. I’m trying to figure out how cr…

Hmmm… But Y11 should be always much larger than this since is is the position of the connection of the Z-Axis to the gantry… At least for the Voron this is some cm… anyway, it is just a proposal and the PO should see, if it is worth a try… I had the feeling, that the QGL converges not too fast, if …

But Y11 should be always much larger than this since is is the position of the connection of the Z-Axis to the gantry… Sorry, I don’t understand this statement - Y11 is “d” plus “Tx1” distance away from the Z-Axis to the gantry according to your drawing. I chose the values based on my printer. …

[image] mykepredko: Sorry, I don’t understand this statement - Y11 is “d” plus “Tx1” distance away from the Z-Axis to the gantry according to your drawing. Tx1 is the distance from the heatbed’s “left” corner to the measuring point. X1 = d +Tx1, the complete distance from the gantry corner. Y…

Okay, I see what you’re saying exactly now but I still feel like a small error in measurement can result (surprisingly) large errors in results when you are going across a few hundred mms. I was already thinking about the 2D case and breaking it up into individual pieces the way that you did and wa…

I read most of the discussion from your link, but somehow it was abandoned and not finished? Was too complex because of the implementation? I did not get this right…

The main problem was that I got next to no reaction. I had one more tester besides the one in the PR, but it didn’t work out too well on their machine. The implementation isn’t too complex, but it requires numpy. As the topic has come up twice in the last few weeks, I can try to revive the PR. Not …

Maybe we could thing of putting all together: QGL might be a 3D Version of Z-Tilt compensation if you look closer to it? At the end the target for both is to align a gantry parallel to a reference surface. If you “lock” Z1 and Z0 and on the other side Z2 and Z3, you get something very similar (as a …

Yeah, I don’t see a problem to extend it to more than 3 motors. The basic idea is to deliberately tilt the bed in a few directions and calculate the intersections of the various combinations. On my machine z_tilt_adjust always converges on the first run.

[Feature Idea] Automatic Calculation of Gantry Corners

Features

koconnor February 10, 2023, 4:42am 7

FYI, there was a discussion on this at Z_TILT improvements .

-Kevin

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QGL behaviour on a Voron350 General Discussion	35	5830	February 14, 2023
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[Feature Idea] Automatic Calculation of Gantry Corners

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