Cricut Explore Air 2 Universal Pen Adapter - Heat Set Insert Version

This is just a quick remix to allow this model to use some M3 threaded heat set inserts (specifically M3x5x4 found here) instead of the captive nut. I also added a flat spot on the ‘back’ to allow for printing horizontally on the bed for the best strength. I suggest printing with 3+ perimeters and brim enabled.

I personally printed it from PETG, seems to work fairly well. Keep in mind that, depending on the size of the pen you use, this model may not hold the pen perfectly in the middle or perfectly perpendicular to the paper so you may experience a bit of an offset when drawing.