Official Luthiers Forum!

I thought I should post this in a new topic for ease of locating but is in reference to the previous post on this subject.

As you may remember 2 weeks ago I placed a single drop of thin CA on a sheet of glass and allowed it to cure over night then using a dial indicator measured the height of the cured drop at .039" in reference to the clean glass. A week later I measured again at .037" and at lunch today (2 weeks later) I measured it at .037" The test was kept in 40% rh at 70 degrees F.

Conclusion is that a single drop of Starbond thin CA shrinks back about 5% over a week and appears to shrink no more after two weeks at 40% rh and 70 degrees F. Now of course this is just a single sample test so take it for what it s worth but this is consistent with what I have experienced in the past.

Thanks for sharing man!

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Alain Moisan
Former full time builder of Acoustics, Classicals and Flamencos.
(Now building just for fun!)

MP,
Do you mind repeating this experiment with a gauge R&R.
10 samples, 3 operators, 3 days ought to cover it.

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"An adventure is only an inconvenience rightly considered. An inconvenience is an adventure wrongly considered." G. K. Chesterton.