Magnetic Bracket for OneFinity Suck-It Dust Boot

My CNC machine has a dust boot on it that attaches to arms on the gantry via a magnetically coupled brackets. I broke both the dust boot and one of the magnetic brackets when I inadvertently clipped a clamp. 

I was able to order a replacement dust boot from OneFinity, but this didn't come with the replacement magnetic brackets. I was able to order these by contacting OneFinity support, but while I waited for these to arrive, I thought I would see if I could 3D print some replacements. The replacements turned out to be a perfect match, so I thought I would share the design in case others can benefit from it.

I re-used the magnets from the original (broken) bracket. But in case you want to order some, they are 6mm diameter x 5mm length. I wasn't able to find this size on Amazon, but there are some sellers on eBay.

The magnets are a press fit into the bracket. You can use glue if you want, but I found they are snug enough to work without it. I have found, however, that there is a fair amount of variation in these magnets as you buy them from different sellers, so you may need to tweak the dimensions in the provided CAD file. 

The magnets have a polarity, so make sure you have them oriented correctly before pressing them into the part. If you are re-using the magnets from the old part, and assuming they are still in place, you can use a sharpie marker to make a mark on the exposed face of the magnet. Then when inserting them in the replacement part, just make sure that face is visible. If the original magnets are no longer in place, you can use the mating magnets in the Suck-It bracket to determine the correct orientation.

I've made two small improvements over the original. The slots were a bit too tight for the provided screws, so I have widened these a bit. I also added some holes to allow one to more easily push out the magnets. This would be useful if you need to replace a bracket in the future and want to re-use the magnets.

I initially printed this in PETG, and while it prints fine, I found when I went to go use it that PETG is a bit too sticky and the dust boot didn't slide smoothly into the brackets/arms like the original did. I would recommend using a different filament, for example ABS or PLA.