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X-axis mendel style outriggers

by Zydac Sep 27, 2010
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i cant seem to get these to sit flat and skeinforge correctly (the 360 one) there is a tiny part that makes the piece float http://grab.by/7MW0http://grab.by/7MW0 messes up the raft (only gets put down in a tiny area) not sure if it is because i have a .25 layer height or not. the other parts printed perfectly

the layer height was it. switched to .28 and it came out perfectly, printing now

Can you post STLs for the individual parts?

Will do when I have time...

awesome, thanks

They are now uploaded

Thanks for posting those, I was having some skipping issues that kept wasting a lot of my print time trying to get these done.

They work great, the bot is 50% quieter and the overal print quality has improved, especially around small holes.

Has anyone running these noticed any decrease in skipping? (If you had problems)

Also, do they quiet the bot down significantly?

If you have X axis skipping due to friction on the regular setup, these would help. I have infrequent random X axis skips on certain models, but it doesn't seem to be based on the hardware. In terms of quiet, if you have the bearings properly contacting the rods, it reduces the noise a lot. However if a bearing gets loose, it makes noise, so use lock nuts or lock washers to keep things from moving. It is never silent, since as someone pointed out the Makerbot is built like a musical instrument!

The m4x16's don't go all the way through in a couple of places, there's no thread sticking out to attach a nut. Am I doing something wrong?

No, I'm doing something wrong! I've updated the parts list. 16s on the single mounts, 25s on the doubles. You might be able to do 20s for the 25s, but its close.

I'm pretty sure the bearings I got were these: http://www.vxb.com/page/bearings/PROD/kit843http://www.vxb.com/page/bearin...

Everything else you should be able to get from the small parts drawers of any decent hardware store. You might want to pick up a few nylock nuts - I had a few of the regular nuts get a little loose after a bit of use.

thanks. man those metric nuts and bolts are pricey.

Sometimes you can find a metric bolt assortment box for a lot less money than buying them individually.

Any particular reason you went for outriggers? Could we shove these mechanical bits inside the x stage for wider prints? Just a thought, I know you'd give up a little mechanical advantage you gain by separating these bearings widely...

I don't think it matters, it looks like you'll hit the pulleys with the flat side of the carriage before or close to the same point the outriggers hit the wall.

That's pretty much it. I originally started designing a version to fit within the X carriage, but it would have had to use smaller bearings to fit, and they were more expensive at VXB! Also the external design makes it easier to adjust without removing the whole XY assembly.

printed mine, and it works great! No more X wobbles. Thanks!

Sweet!!! :-D

I see a Y axis version in the first photo [http://www.thingiverse.com/image:22472http://www.thingiverse.com/ima...]. Does it work/where is it‽

The Y axis one works great.

The Y axis is "Another Mendel Inspired Drop-In Makerbot Y-Stage by koenkooi"


Another Mendel Inspired Drop-In Makerbot Y-Stage

My X axis is really loud and I can see artifacts of the axis shaking in the prints. This should be a perfect fix for it! Awesome work!


though I won't use it :'(

Wow, I even picked up a spare X stage at Maker Faire to be able to do something like this -- only I was trying to stuff parts like these underneath the stage. Awesome.

I was working on the same undercarriage idea, but the only bearings that fit my design cost too much! This is pretty cheap and easy.

I'm ordering bearings tonight. :-D

I ordered mine yesterday, shame they aren't big enough to use 608's.

Looks great. Do the outriggers limit the range of motion?

No, in fact there is room to spare.