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Paint Thickness Gauge Q's

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Paint Thickness Gauge Q's

Postby Robert Freemond » Tue Apr 03, 2018 1:12 am

I'm thinking of refinishing some past builds & would like to know how much finish I left on.
I don't know anything about a Coating Thickness Tester.
I took a quick look and saw that they can be quite expensive & wonder if there isn't a sweet spot
between quality & price.
Robert Freemond
 
Posts: 101
Joined: Tue Jan 24, 2012 4:11 am
Location: Van Nuys Ca.

Re: Paint Thickness Gauge Q's

Postby David King » Tue Apr 03, 2018 12:58 pm

Robert,

I think there are only two types of non-destructive coating thickness testers. One works over ferrous metals via magnetic principals and the other works via eddy currents over non-ferrous metals.

I've seen electron micrographs of violin varnish taken along the edge of a fissure. It's clearly a problem that needs a solution and maybe we can collectively figure out a way. Probably possible with very high frequency resonance using a piezo crystal or something but I think calibration would always be the hold up.
David King
 
Posts: 2411
Joined: Sat Jan 07, 2012 10:01 pm
Location: Portland, OR

Re: Paint Thickness Gauge Q's

Postby Robert Freemond » Wed Apr 04, 2018 6:33 pm

Thanks, David
Looks like I'll have to find another way.
Robert Freemond
 
Posts: 101
Joined: Tue Jan 24, 2012 4:11 am
Location: Van Nuys Ca.


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