Kossel Adjustable Bed Clamp

by stefel77, published

Kossel Adjustable Bed Clamp by stefel77 Aug 23, 2016
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This is a Bed Clamp I made for my Kossel Mini. Bed can be levelled if needed with the adjustment nuts and locked down with another set of nuts. It's designed for my 220mm diameter heated bed but should work with most other bed sizes as well.

Print Settings

Printer Brand:



Kossel K800










You need to print 3 bases + 6 nuts.



Only needs 3 x M4x8 screws to fix the 3 clamps down onto the beams.

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Could you make a version of this that is taller so that you could clamp down a 220mm glass plate on top of a heat plate? I would do it but I don't know how.

Scaling the z axis did lose the fine control of the original and the screw is 2x coarser so a new extended model would be needed

I got it to work by just scaling it up 200% in the z axis only in cura and the same for the nuts, then dropping them 3mm into the build plate to get the right hight. I printed them in pla but will definitely have to reprint in abs or some other material.

i managed to create a version that's about 3mm taller. i printed it out in ABS and it looks fine, i didn't actually use it yet. if you want to give it a try, let me know.

I love this design, but I could not get the nut to screw over the bolts so I did a remix of this with and an M8 nut/bolt found on Thingiverse.
Here is my remix

Kossel Bed Clamp

Good job, I made the nut/bolt so that it's not too loose to give the bed a firm grip, e.g. there's a 0.1mm gap between the nut and bolt but you need a fairly accurate printer to for it to fit, and part cooling during print is also highly recommended to avoid warping of the part.

Can you share modifiable files? I happen to have shorter M4's and would like to modify your design.

Comments deleted.

Actually, this is the issue: http://imgur.com/gallery/Vj6ql .

The bolt head doesn't fit so it doesn't get through.

what is the diameter of the bolt head?

OK, diameter of the hole was 7.4mm so uploaded new STL file that has 8mm diameter so should work with your bolt head as well now.

The part was designed in Autodesk 123D. I can share the design files but I don't think shorter M4's will work well. There is only 2mm of plastic under the M4's in the current design, making it thinner will make the part too weak in my opinion. My recommendation is to get some M4x8 screws, they are very cheap off eBay.