Bolt Action Ball Pen with Case

My Design of a Ball Penn with a bolt action mechanism. I also designed two cases, an one pen version and a double case. The pen fits standard ISO G2 refills and you can either use a spring from an old pen (most of them fit) or the bambu store 0.3x4x20mm springs. For the Case, glue in 4 5x2 mm round magnets. I used the bambu standard PLA. Other materials should work as well For easier placing of the magnets of the case i recommand my magnet setting tool.