https://youtu.be/G8BsxTFyWmc
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Thanks Alans Home Workshop! We've added your Vise V-Blocks to our Vises category,
as well as to your builder page: Alans Home Workshop's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-vise-v-blocks"> <img src="/uploads/272282/homemade-vise-v-blocks.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-vise-v-blocks">Vise V-Blocks</a> <span> by <a href="https://www.homemadetools.net/builder/Alans+Home+Workshop">Alans Home Workshop</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/vise'>vise</a>, <a href='https://www.homemadetools.net/tag/jaw'>jaw</a> </div> </div> </div> </div>
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Previous video for collet chuck for hex head bolts is available here:
https://www.homemadetools.net/forum/...d-bolts-104005
I like your crocodile's jaws. But I would concede it less teeth.
If the long edge (hypothenuse) of the imagined triangle (the 'tooth space') is A=10mm,
then the Dmin of the round stock is 10*0.707=7.07mm
and the Dmax A*1.414=14.14mm.
For practical reasons add an allowance of 0.2mm which results in Dmin=7.3 and Dmax=13.8.
The next smaller triangle (theoretically) would have a long edge of 7.07 / 1.414 = 5mm. The smallest diameter possible in a 5mm triangle is 5*0.707=3.535mm
The next larger triangle (theoretically) would have a long edge of 14.14 / 0.707 = 20mm. The largest diameter possible in a 20mm triangle is 20*1.414=28.3mm
Therefore 3 'tooth spaces' of A=5 and 10 and 20 would cover a range of 3.5 to 28mm.
(Sorry for not providing a sketch)
@uv8452: That is good thinking. If I make another one (- and a mate would like me to), I'll take up your idea.
Thank you.