This isn't so much a remix, rather an adaptation. I designed this tool to help split tmackay's Puzzle Cube.

I printed these at 180 mm/s at .32 layer height with no retraction on my Ender 3 Max. Took about 2 hours, mostly because I had 8/8 top/bottom layers. Highly unnecessary. 4/4 will suffice. If you scaled the cube don't forget to scale the tool.

Print X2. Then, simply align the pegs with the ends of the fingers on the top and bottom of the box, and apply clamping force. With a few light squeezes it'll crack.

Nice work, tmackay. highly underrated. Most complex and visually appealing print in place model I've seen.