Magnetic holders for Solidoodle2 glass bed

by rincewind, published

Magnetic holders for Solidoodle2 glass bed by rincewind Feb 25, 2013
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This are holders for a glass bed for the solidoodle 2 that are printed in plastic and use magnets to hold the bed in place. I found that this geometry is more effective in holding the bed in place with respect to magnets glued directly to the glass and attached to iron like in http://www.soliforum.com/topic/814/magnetic-glass-bed-mounting/ . Credits go to cmetzel for the inspiration


Print 2x the _bed and 2x the _glass (not too high infill to preserve some flexibility). Insert 6x6mm rare earth magnets in each hole (wrap tham in a layer of tape to make them fit tighter) being careful to respect the polarity so that they attract each other when mounted.

Make sure you have a glass bed that is 15x17cm at least in order to have some room to glue the plastic bits.

Screw the _bed parts into the solidoodle bed at opposite sides (eg top-left and bottom-right) and glue the _glass parts below the glass (again, be careful to mount them on the correct sides).

For extra strength, use 4 holders instead of 2, but I find that 2 are enough if the magnets are reasonably strong.

Note: I'm now using this system instead of the holders that I previously published here: http://www.thingiverse.com/thing:37081

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What kind of glue did you use :)?

I decided to use Cyanoacrylic ---i forget the exact spelling- (superglue)

I'll report back if it fails (you [meaning generally a random stranger reading these words, not necessarily OP] won't see a response if it works.) I use my bed up to 110c, but I can only confirm that i'll test it to 90C over several hours. Internet suggests superglue doesn't start failing until 200C, but I've had it soften on driverboards that can't possibly go over 150C, so I suspect 200C is very optimistic. I'm hoping it'll be dandy at 90C.

I also use cyanoacrylate (the gel form, not the liquid). Periodically (say every month or so) I have to glue them back, but it's not too bad. I also used a two-component glue in the past, but it was not worth the effort.

Oi, I have to respond that I've had bad luck with Cyanoacrylate form, at least in the liquid kind. I might print out a larger version of the glass pieces so I can increase the contact area. But I think it's because I take the glass off and like to put it in the freezer to help the pieces pop off. The one glass piece I did that on basically lost all connection points (I'm using four mounts) within two prints. Then I've also used one that I just air-cooled for a while, and that lost 1 after several prints, and not another after a few more. So not much luck for me with liquid super glue.

Since super glue is so much easier that two part epoxy, I think I will still stick with single component glues. But my next shot might be some expanding gorilla glue.

Tried gorilla glue, not any better for me. Going to make larger surface area for the glass side, since my glass piece is larger anyway.

Best results so far: gasket silicone but I'd guess most any silicone type of glue would work. Not as strong of a bond as room-temperature superglue, but doesn't become weak at elevated temp. So far seems to be OK with the freeze cycling as well.

How does the glass perform compared to the kapton tape? Do you use hairspray or anything?

I actually used kapton on glass for a while because I had delamination problems of the glass itself while cooling. now I switched to borosilicate glass and hairspray. The biggest advantage is the possibility of quickly swapping the plates.

Yeah, I haven't read any complaints about borosilicate and hairspray. I think I'll give it a try. Thanks for sharing!