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Lapis Lignum's video: 35 bit Mechanical Programmable pattern tablesaw no dado any width box joint cutting jig

@35 bit Mechanical Programmable pattern tablesaw no dado any width box joint cutting jig
I've made a number of blade-width box cutting jigs before and decided I wanted bigger fingers, not wanting to buy a dado stack I instead bought 5 cheap circular sawblades and made steel spacers to mimic a dado blade, After much experimentation I couldn't get this to work and after only finding difficult or complicated jigs I eventually stumbled across this video https://www.youtube.com/watch?v=EyJof__nTR4 by https://www.youtube.com/@woodfather (which got the algorithm running and put me onto a few other similar, helpful videos too) which seemed like a good way to do it. After some experimentation I came up with this, my contribution to the world of finger cutting jigs is that the pattern for the mating board is automatically made as soon as you set the pattern for the first board, and it is very quick to flip the pattern to cut either board. Originally I used plywood for the pattern stops/pegs/bits but then remade them out of polycarbonate sheet, the advantage to the polycarb is that it is only slightly thicker than the saw kerf and is less compressible than wood, virtually any pattern can be made with this, which is great for different board widths or leaving space for cutting the lid from the box etc. I used M8 (roughly 5/16" in freedomunits) allthread because it is cheap and I use M8 for most things, but going bigger could be work it as it is somewhat flimsy. The fixed support on the right hand side could be stiffer too. Technically this is a 35 bit pattern, so if the board is wide enough it will allow 34359738366 possible combinations, or around 8.5 billion if you divide by 4 to account for symmetrical joints. In searching for this kind of thing (pre electronic binary systems) I discovered Jacquard looms, which are interesting and worth a look if you are into that kind of thing. @matthiaswandel this might be up your alley. no gears involved though:)

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This video was published on 2024-05-31 17:00:16 GMT by @SPE on Youtube. Lapis Lignum has total 23.2K subscribers on Youtube and has a total of 64 video.This video has received 7 Likes which are lower than the average likes that Lapis Lignum gets . @SPE receives an average views of 119.3K per video on Youtube.This video has received 0 comments which are lower than the average comments that Lapis Lignum gets . Overall the views for this video was lower than the average for the profile.

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