Posted 25 February 2017 - 10:12 PM

Okay. What I have currently for the fully 3d-printed version is the shell with only the required internal cutouts, and completely altered internal components. This allows the end user to decide what level of infill they want on their print. Each section of the shell is no longer than 9 inches, making it compatible with the majority of the entry-level machines.

The three pairs of shell halves are held together and reinforced by a total of four 1-foot long 6-32 thread rods. These should hold the majority of the tensile stress from the spring and could be used to epoxy-cure the shell halves together permanently if desired.

The plunger rod has a 6-32 threaded rod inside the core of it too.

The catch and trigger have also been altered to be compatible with printing.

The configuration shown offers 4-1/8 inches of plunger draw inside a 1-3/8" ID plunger tube (aluminum or polycarbonate). If a longer plunger tube is desired the rear stock cutout should have room for a full 6-1/4" stroke for a full-length K26 spring. However the front of the blaster would be cut completely open and spacers and a plate made be needed for the end of the plunger tube that would be sticking out of the shell. Or the model for the shell would be extended to cover the remaining distance.

I'll try to work up the full K26 version sometime this week.