I designed an adapter for the Supernote Ceramic Nib Refill to work with a Tactile Turn Ultem Pen. This will allow you to use the refill in the Tactile Turn Bolt Action Short pen. The adapter prevents the copper coil from coming into contact with any parts and relies on the refill's flange for a pen stop. The top section is tuned to just engage the refill's spring when fully deployed.

I originally did something similar with the insert from a broken push up pen. That didn't turn out so well as the insert was damaged and the ceramic portion kept "yeeting" out. This new design is more robust, prevents interference with the copper coil, and virtually eliminates pen tip wobble.

The model should be printed vertilcally at 0.15 mm layer height. The bottom pieces should be placed around the front coil area of the pen insert.  The bottom piece with a notch should be facing the copper pigtail side of the pen insert.  This assembly should be pressed into the pen tip.  It should be snug but not too tight.  Sand the two faces of the bottom pieces to ensure a tight fit.  You may need to sand the outside of the assembly as well.

slide the spring that comes with the Tactile Turn pen over the back end of the insert.

The top piece should slide over the plastic extension tube on the pen insert.  Press it firmly around the base to ensure it's snuggly attached.  The print should extend past the pen insert tube by about 1mm.  Total length of the pen insert with the bottom attached should be 99mm from the tip of the nip to the tail.