I needed to add dust collection to my Primo MPCNC. Found one I liked on Thingiverse but it was for an earlier version so I did a remix. It attaches to the Core by using two longer bolts and spacers to avoid interference. It uses a bristle brush from McMaster Carr, cheap and very effective. Their part #1469N14, only $2.02 for 3ft. The one I had was leftover from a previous project and had 2" bristles so I cut them down. It fit in the shoe nicely with no adhesive.
I lost about 50mm of Y travel but no X travel.
The metal post is from an old vacuum cleaner, the black hose is the original that came with the Ridgid shop vacuum. The orange hose is the upgrade hose they sell.
There’s a printed adapter between the two hoses.
It does a great job of gathering the chips.
The files are on Thingiverse, #6810169