Gantry racking

[north harness]

When i push the gantry towards the back it starts getting harder to push and the toolhead starts moving towards the b motor

[marble gulch]

Can you please take some pictures of your xy belt paths

Please

[bronze pasture]

especially, pictures of the rear of the a/b motor mounts

[tawny ridge]

ooohhh he probably did the thing

[bronze pasture]

if it is, it's the 2nd one i've seen today

[tawny ridge]

mine was like that so long it wore a hole in my metal spacer

[marble gulch]

I think so but we need pics to be sure

[north harness]

Camera wasn’t working but here

[marble gulch]

Uhh, where did you get your kit and printed parts from?

Can we get a bunch of photos of you machine. Just spam them

[north harness]

It’s an Ldo kit and the parts are a pif functional kit

[tawny ridge]

wait have you turned it on yet and moved the gantry

try unplugging x/y steppers then try to move it by hand

when i had bad motor connections similar happened to me

[north harness]

i tried and it was the same

[tawny ridge]

you can try turning the motors individually by hand

[tawny ridge]

bad motor could cause this also

[bronze pasture]

this screw looks too tight, all screw heads should be flush with with printed part

if any of the screws that go thru an idler are too tight and aren't able to spin freely, that can cause what you're experiencing

[bronze pasture]

these screws appear to be loose

[bronze pasture]

as is this one

[north harness]

Fixed the screws but something I noticed when it happens is that the top belt to the right gets pulled

[bronze pasture]

how have you tensioned the belts?

also, what is this that appears to be wrapped around the z belt?

[north harness]

It’s excess belt

[bronze pasture]

ah, ok

is this a cable going between the z belts? all wires are supposed to be to the right of the z belts

[north harness]

Yeah I need to fix that

[bronze pasture]

yeah, before we continue on with the belt issues

we don't want anything that can foul the belts or impeding proper movement

[north harness]

It’s fixed

[bronze pasture]

ok, that's great, so back to the first question here #1558260317501259906 message

[north harness]

i did this in the documentation while trying to fix this https://docs.vorondesign.com/tuning/secondary_printer_tuning.html#ab-belts

[north harness]

forgot to hit reply

[bronze pasture]

perfect

did you address this screw? #1558260317501259906 message

[north harness]

Yep

[bronze pasture]

nice

with all these small things taken care of, how is the toolhead movement now?

[north harness]

It still is doing it

[bronze pasture]

hmmmm, ok, does that top belt still get caught #1558260317501259906 message ?

btw, i need to step out for a while, sorry

[north harness]

yeah it does

[bronze pasture]

hmmmm, are both belts exactly the same length and have the same amount protruding from the x carriage?

it might also be worth checking the belt tensions once more since we've made some changes

i'll have a think whilst i'm out, see if i figure out anything else it might be

[delicate burrow]

This looks a bit like the y extrusions are too close together at the back. Does the x axis bind at the back in the same way when the belts are loose or even removed?

[north harness]

yeah they do