How can I prevent the linear bearing from popping out of my UMO+ printhead?

[lrvick 0]

This happens frequently on my new UMO+ and has ruined several prints including one yesterday. After 13 hours of perfect printing the X bearing finally slid and fell into the left side of the sliderblock past the wall thus tilting the printhead.

Can I drop in a UM2 style sliderblock like this? http://www.ebay.com/itm/like/361113040900?lpid=82&chn=ps

Or perhaps has anyone printed any drop in slider-block alternatives with success that have a better lock on the linear bearings?

Open to any ideas.

[nallath 1,124]

Yep, one of those should work. A dab of glue should also work. The linear bearings popping out is a result of tolerances of wood; sometimes its just not quite tight enough.

[neotko 1,417]

The um2 block won't work on umo+ without some redesign, since the alu block has different screw holes. Try to check if all the sides are correctly screw or use some glue, I don't know what's the best glue for metal+wood, but I suppose just an epoxy would do the job.

You could try to laser cut the upper part or find someone who has a spare of that wood parts. I bet that if you ask support they might even send you a few x4 wood parts. Personally I would not glue them, but that's just me

Have you double check if the x/y are perfectly aligned? That also should help remove extra tension? Just dropping ideas...

[IRobertI 521]

I'd just use a dab of glue or shim the hole with a thin piece of paper or something like that. I also agree with neotko, check that the alignment is good, there should be very little friction pulling on the bearings normally.

[lrvick 0]

Alignment is dead on and everything is tight (I have been checking it frequently). It does seem the bearings are just a loose fit in the wood housing.

I suppose some epoxy would probably do the job though that really feels like a dirty hack. That said, I can't even print a replacement housing the way it is running now.

Epoxy it is.

Anyone know where to source these exact bearings (mcmaster or otherwise) in case I muck them up too much for transfer into a future replacement enclosure?

[neotko 1,417]

I bough x4 3 weeks ago from makertronics.co.uk - Linear Bearing LM6LUU 6mm Long Bushing