This is a great way to get the PTFE into the chamber if you are planning on using a ERCF. You just need some (2)M3 X16 mm Screws and (2)M3 Nuts. I am going to add a version with threaded inserts as well.
I ordered
HiPicco GE5C Radial Spherical Plain Bearings, ID 5mm x OD 14mm x Width 6mm Self-lubricating Sealed Spherical Roller Bearings 4pcs on Amazon
The author remixed this model.
I found the GE5C Radial Spherical Bearing didn't fit in this model after I printed it. But I really liked the design and concept Mark came up with.