Cannot smash this corner any more.

I have tried: adjusting front left down, won't go any further. raising back left up. shimming the back left up just exagerated it across the entire rear edge. halp i need an adult.

VisualTech48•1/31/24, 9:29 PM

So what you can do is, raise A actually.
You might be reading the results wrong, C is actually very high, while D is very low.

So If you raise A, you will lower C.

VisualTech48•1/31/24, 9:29 PM

https://www.youtube.com/watch?v=h7ZTq2dDTkM

YouTube3D Printers & a Whiteboard

RatRig V-Core 3: How to Get a Square Frame

This video is for those who struggle getting bed meshed with their RatRig V-Core 3.
Please feel free to jump to the chapter you are interested in.

0:00 Intro
1:05 about the v-core 3 frame and bed leveling
8:26 what to take care of in the building phase
9:17 the right square
10:09 build tips
16:50 adjusting the frame according to your bed mesh
...

RoboCopsGoneMadOP•1/31/24, 9:30 PM

wat

VisualTech48•1/31/24, 9:30 PM

Watch the video, it explains everything.

The bed is defined by 3 points.

RoboCopsGoneMadOP•1/31/24, 9:30 PM

yes, i've watched that

VisualTech48•1/31/24, 9:31 PM

Well then you know what I mean, if you raise A you will lower C

RoboCopsGoneMadOP•1/31/24, 9:31 PM

the key on the graph indicates red is higher

RoboCopsGoneMadOP•1/31/24, 9:31 PM

so i was trying to raise C by lowering A

VisualTech48•1/31/24, 9:32 PM

Yes its higher, but A and B will always be flat.

VisualTech48•1/31/24, 9:32 PM

Always.

RoboCopsGoneMadOP•1/31/24, 9:32 PM

yes, the mesh tells me that

VisualTech48•1/31/24, 9:32 PM

Yes, so if you raise A, C will will go higher, which means it will flatten out more.

RoboCopsGoneMadOP•1/31/24, 9:33 PM

i'll try it

VisualTech48•1/31/24, 9:33 PM

Do it bit by bit.

VisualTech48•1/31/24, 9:33 PM

As if you raisse A too much D will then be blue and fall down.

VisualTech48•1/31/24, 9:33 PM

So do a slight adjustment, and then home Z

VisualTech48•1/31/24, 9:33 PM

Then Z tilt

VisualTech48•1/31/24, 9:33 PM

Then do bed mesh.

VisualTech48•1/31/24, 9:34 PM

Do not skip these 3 steps, Home Z, Z-Tilt, Bed mesh

VisualTech48•1/31/24, 9:34 PM

After each adjustment.

VisualTech48•1/31/24, 9:34 PM

Your quite flat besides that

VisualTech48•1/31/24, 9:34 PM

The X gantry looks straight.

RoboCopsGoneMadOP•1/31/24, 9:35 PM

yep, x is great

VisualTech48•1/31/24, 9:35 PM

Try it and let us know the result. You should have a great bed mesh if you just fiddle with A a bit.

RoboCopsGoneMadOP•1/31/24, 9:35 PM

and my triangle is spot on.

VisualTech48•1/31/24, 9:36 PM

Then you are golden.
Be ware of bi-metalic if you use the classic rail+aluminum extrusion for X

VisualTech48•1/31/24, 9:36 PM

Its a large machine.

RoboCopsGoneMadOP•1/31/24, 9:36 PM

whats that?

VisualTech48•1/31/24, 9:37 PM

So our Rail is steel, and the extrusion it is hooked to is aluminum

VisualTech48•1/31/24, 9:37 PM

When you heat up the bed, you might see X gantry bow.

VisualTech48•1/31/24, 9:38 PM

This is my IDEX bed, which is the same width as the 500:

RoboCopsGoneMadOP•1/31/24, 9:39 PM

ah shit... i forgot to heat the bed...

RoboCopsGoneMadOP•1/31/24, 9:41 PM

well on a cold bed it is improved to .369

RoboCopsGoneMadOP•1/31/24, 9:44 PM

i'll give it another tap and heat it up for the next one.

RoboCopsGoneMadOP•1/31/24, 9:51 PM

thats a bit worse

VisualTech48•1/31/24, 9:59 PM

You still need to raise A

VisualTech48•1/31/24, 9:59 PM

The thing is

VisualTech48•1/31/24, 9:59 PM

When you do that, and tighten it back

VisualTech48•1/31/24, 9:59 PM

It can go back a bit when you screw it up

VisualTech48•1/31/24, 9:59 PM

So you either hold it really tight, or you clamp it somehow before screwint it up.

VisualTech48•1/31/24, 10:00 PM

But keep at it, just a bit and you'll get there.

RoboCopsGoneMadOP•1/31/24, 10:00 PM

i usually leave one screw in fingertight as i adjust it

VisualTech48•1/31/24, 10:00 PM

Take it slowly, its a long process saddly, because you have to wait for the bed mesh.

VisualTech48•1/31/24, 10:03 PM

When you get it as flat as possible you can patch it up further with Kapton tape.

RoboCopsGoneMadOP•1/31/24, 10:19 PM

nope, still getting worse.

RoboCopsGoneMadOP•1/31/24, 10:19 PM

.509. same shape

VisualTech48•1/31/24, 10:21 PM

Cold bed for now I hope?

VisualTech48•1/31/24, 10:21 PM

Show me the bed but in full

VisualTech48•1/31/24, 10:21 PM

Like my image is.