Unanswered Warped bed, alternatives?

Hey guys - been getting frustrated because I can't keep my bed level. While I understand some of that is the inefficiency of the auto leveling routine, but I seem to have three corners just about right and one corner that is higher. Yes, I can raise the other three corners, but then it doesn't sit great because there are too many paper shims between the agents and moves easily. The bed looks straight, but clearly isn't.

What alternatives are there? Also, I have another bed from Robo but the magnets aren't attached. I want to try it. What should I use to attach the magnets and what's the best way to install them? Should I put them on the rail magnets first and then place the glass bed down?

Could the y rails or connectors be warped?

Maybe I should try mesh leveling. How hard is that to implement? Any threads?

 

Mesh leveling would be the best option it sounds like. Waldo has the new Marlin thread and I thought there was a mesh leveling guide in that thread or at least a link from it.

@Mike Kelly has a Thingiverse page for his Y axis remix and he stated "CA glue or two part epoxy is good for gluing the magnets to the bed/plastic.". Sounds like he used the two part. There is a bit of margin for error with the position of the magnets, but you want them to be fairly squared up with one another. You can use a clamp to glue them tight onto the glass. That will hopefully keep from having too much of a gap variance between them. Probably no need to glue them to the glass while attached to the y axis brackets. Just do it with the just the glass and the new magnets. I do wish there was an adjustable scree to push the magnet that is in the bracket up or down a bit so you don't have to resort to paper circles. One could design that I suppose

There is a chance there could be some warping in smooth rods. They are only 8mm and the Y axis is pretty long. I would have preferred to have seen 10mm rods.

I still think that if warping continues to be an issue that trying mesh leveling would be the next best step. That firmware isn't an official release yet, but it is getting pretty close and I know some here have been using mesh for some time now and are happy with it.

http://community.robo3d.com/index.p...-1-0-release-candidate-7-for-r1-r1-plus.5806/

 

Thanks Danzca. I started to go through that thread and quite frankly didn't have time to try and figure our firmware in the 32 page thread.

What I am really hoping for is a succinct way, including files and download location, to implement the new firmware for Robo and mesh leveling. I'm not lazy, it's just a little confusing and I am not a programmer, etc.

 

Toro

This is the post that explains what files you need. Prior to loading these files, be sure you do an M503 and save off the settings in a text file for later reference and make sure you have the original Firmware to load back on.

http://community.robo3d.com/index.p...date-7-for-r1-r1-plus.5806/page-29#post-82415

There are videos and other info online about the procedure to setup the Mesh Leveling. You have an LCD so that will help. Waldo has taken care of getting the firmware files setup for you. You just need to go through the manual probing procedure...man that sounds like some sort of alien abduction procedure...haha. I haven't done it personally yet, but I will be more than happy to help figure it out with you.

https://github.com/MarlinFirmware/Marlin/wiki/Manual-Mesh-Bed-Leveling
https://github.com/MarlinFirmware/Marlin/pull/1619

 

This is exactly how I would do it. Then you at least know they will be in the right place, even if the bed is a little crooked. Put some weight on the bed or use 4 clamps to secure it and let it sit overnight.

When I received my replacement Y-Axis smooth rods and bearings, one of my stock rods was extremely bowed. Luckily the ones Robo sent me were fairly straight upon arrival. I had one problem with the new rods and that being they were only 7.9mm but my stock ones were as well. This creates a ton of slop with the bearings.

I think I am going to look at doing something similar to what WheresWaldo has done with the Y-Axis Upgrade. But I think I would go with 10mm rods.

http://community.robo3d.com/index.php?threads/y-axis-bearing-alternative.7167/

I have not tried MESH Leveling yet, so can't chime in on that.

 

Thanks for all the great advice and help as always. You guys are great. Geof - where do you get the steel sheets?

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I have the 10mm rods, bushings, and models for the parts needed to be printed for this if you want a copy of them Ryan.

 

Does it make a big difference? Does it feel more stable?

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Amazon didn't have any. Or at least none that I can find.

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Would foil duct tape work?

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Not installed yet I am a slacker. It's actually part of a bigger picture upgrade I am ramping up for. I've heard those doing the 8mm upgrade has had good success. I have extra 8mm, 10mm, and 12mm rods. I can tell you that the rigidity is pretty significant just when holding each sized rod. The bronze bushings aren't cheap compared to the LMUU8 bearings.

 

Duct tape fixes anything...ask anyone. haha!!!

 

The problem is that the one corner is high by about .2 - .3 mm. I can raise the other three easily of course to match it but I would definitely need that tape or something because the paper circles start to impact the magnetic holding of the bed.

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Shim stock on Amazon:
https://www.amazon.com/Steel-Stock-...8&qid=1472055971&sr=8-18&keywords=metal+shims

 

@Rigmarol is the Amazon search master of the day. I'll have to add these to my cart. Never know when you will need these.

 

Sorry, saw that but it's not self adhesive.

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