• jar of Boric Acid 4 oz
  • open jar of Boric Acid 4 oz
  • video Cool Tools | Basic Soldering Tools by Terri McCarthy
  • video Cool Tools | Soldering a Small Bail to a Pendant by Terri McCarthy
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Boric Acid 4 oz

Boric Acid 4 oz

SOL-102

4oz jar

Made in USA

$8.95 USD
$8.95 USD
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Boric Acid 4 oz

This Boric acid is mixed with denatured alcohol (not included) to create a solution called fire coat. Boric acid/denatured alcohol mixture protects silver, copper and gold from forming fire scale during heating and soldering.

Made in the USA

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See this Product in the Learning Center!

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Overall rating: 4.090909 / 5 from 11 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["coat"].

Review highlights

Reviews

coarse and granular

"I love Cool Tools but this product? Not so much. This powder is quite coarse and granular. Very little of it goes into suspension. Therefore, it offers minimal firescale protection."

— Jeff S. (3/5)

Overpriced and Didn’t Work

"It comes in a tiny container that cost the same as my bigger one from another vendor. And to make matters worse, it separates and didn’t work. I used it only once."

— Desiree (1/5)

Boric acid

"Works great for pretreating copper for soldering. I found the granules to be a little larger than the material I had been getting elsewhere."

— Deborah S. (5/5)

works great

"This is a very good product, I will definitely buy again."

— Maureen's C. (5/5)

This is a excellent product

"This is a GREAT product to prevent firescale Thanks CoolTools"

— Choctaw I. (5/5)

Hasn't worked for me

"I could never get this to work properly. I couldn't get a good mix--the powder and the alcohol always separated. As a result, I still got fire-scale."

— Sheahasu (2/5)

Easy to use

"Reasonable price , great instruction"

— Cindy (5/5)

Great product

"I use this product mixed with denatured alcohol to prevent fire scale while soldering. Very easy to use and effective."

— Julylamoon (5/5)

Great Product!

"This product works great - be sure to watch the instructional video that goes with it by Cool Tools online!"

— Tag1 R. (4/5)

Boric acid prevents firescale

"I found the mixture of boric acid and denatured alcohol easier to thoroughly coat metal than Firescoff so I use the mixture almost exclusively."

— Bj K. (5/5)

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