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Hi, all. I've been trying to solve my issue printing larger prints (15cm or so on a side) that end up using a lot more of the bed than most of my previous ones, and I've been unable to get things honed in right on the X tower, no matter what I try - as the effector/nozzle approaches the tower, it pushes towards the build plate significantly as it gets within a few cm of the X tower base.

On closer inspection, the whole effector platform is tilting quite significantly when it's next to the X tower, but not the Y or Z towers. Here's it next to the X tower:

[img]https://lh3.googleusercontent.com/Co99u ... 3-h1082-no[/img]

And then a more normal alignment next to the Y tower:

[img]https://lh3.googleusercontent.com/j1vap ... 8-h1131-no[/img]

My first thought was that one of the towers wasn't properly square, but checking it with a set-square shows that they're at least within the tolerance of that. Is this the sort of thing that can be brought on by the tiniest amount of tower tilt, or is there some other issue here? (arms? cheapskates?)

I would love to try and solve this and hopefully get my larger prints working more reliably. The nozzle precision is still pretty great as long as it stays in the center of the build plate, it's only on the left (X) edge extremes that it starts going about 1mm too high (between X and Z towers) or low (next to X tower).

Thanks!

First thought, "That's unpossible!"

Are the arms coming into contact with anything on the effector platform? Is the bowden tube getting "tight" as the platform begins to tilt?

The tilt isn't a tower issue - there's something mechanically interfering with the arms.

g.

Looks like the E3D fan is hitting the arms. Which is odd, since I haven't had that problem with mine (I have had many other entertaining problems with it). Try taking the hotend loose for the effector (Or even just the fan shroud off), to see if that's the problem. If it is, you can remount the hotend below the effector for this print.

It was, of course, a 4-pin connector being stuck between the fan and the arm on the X side, mechanically pushing it over as it got closer!

Thanks - hopefully I can get that corner to actually print now (and I feel better about spending the money for the accelerometer upgrade so I can stop waggling paper under the nozzle).