OK exceptional work without a doubt.
The imagery and supporting documentation very professionally done.
Now a suggestion if I may,

Router:-
1. The pinkies are way too close to that mincer in my mind, so I am suggesting a pair of channel Loc type plyers with nylon or HD material attached to the jaws to hold the smaller pieces.
1a. Or as an alternative fashion the blocks in lengths, profile the edges and then cut to size thus reducing the square bullet risk and and airborne mice meat possibilities blurring your safety glasses.
Miss assembled items:-
2. Is it possible to make handed puzzles as it seems the error is a mirror image of the correct one.

I am looking forward to seeing your next puzzle! ... will it be a 3D69 release/version

Hope everything is ship shape in Churchill, no doubt C and C paid you a visit while they were here but you didn't let on for security reasons



Regards Rob