Removing bed springs
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- Posts: 21
- Joined: Mon Nov 30, 2015 9:38 pm
Removing bed springs
Has anyone successfully improved the bed leveling by removing the springs ? Cnc machines have no springs so I can't see why we need them on the m2.
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- Posts: 105
- Joined: Wed Apr 09, 2014 11:36 pm
Re: Removing bed springs
The Rev. E machines do not have springs. The bed leveling procedure is completely different than the 3 point leveling you currently have. You would need to upgrade to the 4 point spider that solid mounts to the z platform.
Re: Removing bed springs
Works fine for me:Deereengineer wrote:improved the bed leveling by removing the springs
https://softsolder.com/2013/05/31/maker ... ilization/
The silicone disks support the platform. I couldn't think of anywhere better to store the springs, so I left them in place.
The downside is that the platform has absolutely no vertical compliance: if the nozzle rams the glass (or aluminum or whatever) hard enough, something's gonna give.
Re: Removing bed springs
The best result is that the Z motor slips first. Wouldn't that happen before the glass breaks, or anything else catastrophic?ednisley wrote:The downside is that the platform has absolutely no vertical compliance: if the nozzle rams the glass (or aluminum or whatever) hard enough, something's gonna give.
Re: Removing bed springs
I vaguely recall somebody showing off a cracked glass platform from a nozzle crash (as well as one from a corner clip gotcha), presumably with springs involved. That surely required more than a casual crunch.Tim wrote: Wouldn't that happen before the glass breaks
I'd worry more about deforming the nozzle or bending the hot end, particularly on a V4. Although I know it's a durable bit of brass you folks think nothing of reaming out with wires & carbide drills, the tolerances call for careful treatment. Mashing it against the platform can't possibly be good for it.
On the other paw, I haven't had anything exciting happen for a couple of years; I definitely worry too much ...
Re: Removing bed springs
you cant remove the springs. if you remove them then what is going to push the bed upward so that it can be adjusted?
Re: Removing bed springs
For my M2, I used a trio of silicone rubber washers with enough compliance to level the platform, cut from scrap vibration isolators in my Pile o' Stuff:jimc wrote:what is going to push the bed upward
https://softsolder.com/2013/05/31/maker ... ilization/
The washers, along with the M2 spring and mounting screw, stand along the center bottom of the picture. The junk on the top shows that it took me a while to get it right...
Anything rubbery with some flex, about that tall, should work.
The platform sits flat on the not-quite-solid washers. The adjusting screws compress the washers just enough to level the platform, after which it's pretty much a rigid part of the Z-axis machinery with no compliance at all.
The silicone washers didn't make much difference in the overall print quality, but I haven't had to align the platform in ... I don't remember.
Re: Removing bed springs
Yes i remember you used silicone washers which is great but it sounded like the op wanted to simply just remove the springs
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- Posts: 21
- Joined: Mon Nov 30, 2015 9:38 pm
Re: Removing bed springs
I'm ok with keeping the springs , but I want to stiffen things up enough so that a dial indicator will read correctly without moving the build plate .
Re: Removing bed springs
Get a rev E spider. You can keep the Z=0 homing if you want.Deereengineer wrote:I'm ok with keeping the springs , but I want to stiffen things up enough so that a dial indicator will read correctly without moving the build plate .
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