The file '10mm 1x1xN Twisty Puzzle 3D Printer Model' is (stl) file type, size is 57.7KB.
i printed original, im sure that works
if you want 1x1x3, then print 1 extend. if 1x1x4, then print 2 extend etc.
a_X1.stl | 60.0KB | |
b_X1.stl | 60.0KB | |
Extend.stl | 72.6KB |