I've been looking for options to seal wood scales. Wood is easy to work with, and easy to acquire. Mistakes are no biggie. So it is an obvious choice for self-education in making scales. I will undoubtedly move on to other mediums for scales. Maybe poured resin... probably about the time I build a vacuum chamber.

Back on topic! Sealers!

I don't care for CA glue; it is tricky to use, and I don't like the fumes. Many wood finishes don't completely seal the wood from the elements. I also only want a brush-on, not an aerosol. I don't know a ton about paints/finishes/etc., so I've been perusing the appropriate aisles when we are at the store, reading a lot. I read labels & descriptions & websites, followed by reading Wikipedia & related sources about chemical makeups and such.

Suggestions & help narrowing the field would be much appreciated. I'll list some I've considered thus far.

Thompson's Water Seal.

I saw a bunch of Minwax polyurethane finishes, but most might be stains as well. Currently, I just want a clear sealer. It is also hard to tell if they'd be safe to use on a hygiene implement. Also, from what I can tell, polyurethane finishes don't completely seal .

Also, this stuff:
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It is certainly smaller than a gallon of Thompson's!
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I took pics of the label info for my own notes, but why not...
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I've only seen this particular product at one of the half a dozen or so big-box stores I've been in recently.

My first prototype scales are nearly complete enough to be useable!