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Extrusion Corner Blocks

by bdring, published

Extrusion Corner Blocks by bdring Dec 29, 2012

Description

I made these corner blocks for Misumi 20mm x 20mm extrusion. Misumi sells similar blocks but they are close to $6 each and I need a lot of them. I also designed it to have one screw compress the layers to make them a little stronger.

This type of corner block allows you to use the slots for acrylic panels.

There are three versions. A standard corner and two corners (left and right hand) that act as feet.

I used them to make a nearly air tight spool holder. The extra parts for that are here too.

Recent Comments

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Are these meant to be fastened with 6mm metric bolts?

Thanks for a fantastic design!

The indexing bosses do a good job of locating the blocks. My inside holes are often a little undersized so for holes that do not matter too much, I usually err on the larger size.

Very nice. Have actually had this on my "to design" list for a while. You saved me that effort! ;)

Screw holes are 6mm...
Do that for a reason I'm not seeing? I'd think a tighter hole would aid in keeping things together a bit better, and provide a bit more clamping surface. Possible you could post up a version w/ 5.1mm holes?

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Instructions

You need to tap the center holes of the extrusions to 5mm. The hole is already the correct size for that.

The corner blocks require low profile head screws. I used button head screws.

Spool holder (I'll public a STEP file soon)

The little clips are used as wedges install the acrylic panels,

The spool rolls on 1/2 EMT electrical conduit with 5x15x5 bearings pressed in. The handle is made from the same material.

more details here...http://www.buildlog.net/forum/viewtopic.php?f=16&t=1625&start=40#p15958

Comments

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theverant on Apr 12, 2014 said:

Are these meant to be fastened with 6mm metric bolts?

Thanks for a fantastic design!

NM-Buzzard on Dec 30, 2012 said:

Very nice. Have actually had this on my "to design" list for a while. You saved me that effort! ;)

Screw holes are 6mm...
Do that for a reason I'm not seeing? I'd think a tighter hole would aid in keeping things together a bit better, and provide a bit more clamping surface. Possible you could post up a version w/ 5.1mm holes?

bdring on Dec 30, 2012 said:

The indexing bosses do a good job of locating the blocks. My inside holes are often a little undersized so for holes that do not matter too much, I usually err on the larger size.

SystemsGuy on Dec 29, 2012 said:

Bart, functional and good looking as usual!

fma on Dec 29, 2012 said:

Very nice!

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