Re: cordless tool 18V to 12V converter

On 16/03/2024 23:36, Jim Wilkins wrote:

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"Jim Wilkins"  wrote in message news:ut5195$334ch$1@dont-email.me...
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"Jim Wilkins"  wrote in message news:ut4jh5$309ec$1@dont-email.me...
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I doubled it to 200 Lbs, one tick mark,  on a 3/8" thick square of red oak
in a plastic bag and added water about 20 minutes ago. So far the gauge
needle hasn't moved.
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4 hours later, if anything the pressure has decreased by the pointer width.
Into the freezer with it, until I need the space for the kettle of beef stew
I'm cooking.
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2 more hours, 0F, the pressure is zero and the C clamp isn't tight. Out to see if the pressure recovers as the gauge warms.
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It does, a little.
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Either wet wedging doesn't work or I missed something.

Why I asked about the type of oak is that I was told red oak has an open cell structure and can allow water to wick into the wood easily which isn't the case with other types of oak, maybe in this case that is preventing any cellular swelling or allowing any pressure to squeeze the water out. Can you repeat the test with white oak. I have some English oak here but my force gauge is out of action until I replace the loadcell lead.