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Post by Stevie on Nov 28, 2021 20:54:20 GMT
You're doing just fine if you can measure 0.2mm (8 thou') with that curious (and obviously traceable ...) measuring stick Pete.
でつ e&oe ...
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Post by Michael Messer on Nov 29, 2021 9:01:21 GMT
HOW MUCH!!!! 0.2mm difference. I rest my case Shine On Michael
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Post by pete1951 on Nov 29, 2021 9:10:11 GMT
“And Yet it Moves”
Galileo
Just not very much Pete
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Post by Stevie on Nov 29, 2021 9:13:28 GMT
But who would stick their neck over the parapet and predict the outcome? I expressed exactly that combination of forces to another contributor by PM.
でつ e&oe ...
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Post by pete1951 on Nov 29, 2021 9:57:01 GMT
The cone movement was actually .3mm, it would be best done on a square neck, where there would be little neck bending. As the neck bends upwards the string follows, this means that the actual figure ( because I used the string rather than the biscuit to measure from) could be even more,( .35 or even .4mm !) Pete
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Post by Stevie on Nov 29, 2021 13:08:20 GMT
Apologies Pete. I've only just realised that's a vernier caliper. I leapt to the conclusion that it was an old rule. My bad as the yoof say.
でつ e&oe ...
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Post by pete1951 on Nov 30, 2021 10:28:51 GMT
A more accurate ( but simple) way could involve a match stick and a feeler gauge. Cut the match so it is a snug fit between the hand rest and biscuit ( careful not to jam it in, you could damage the cone) while strung with light strings. Replace with heavy strings and see if you can measure any deflection. Pete
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