Pro GradePro Grade - Acid Brushes - 36 Count 3/8 Inch Boar Hair Acid Flux Brushes

I use these for projects using Epoxy Resin, JB Weld, Bondo, Grease, stuff you don't want to waste a nice paint brush on. and they work great. especially when working in tight spots. then just throw it away

Decent quality for the price and handy for many tasks

Used for contact cement. Some bristles came out while brushing on sole. Check for loose bristles before using

brushes packaged nicely and we use them as disposable brushes to apply grease, etc.

These are ubiquitous in soldering situations for a reason. I usually order these every other year and never run out. I've had minimal bristle loss with these, but some loss is inevitable. The brush size and stiffness is adequate for most applications. The price is right for these and plenty for almost anyone.

I can’t really complain cause these are definitely worth the price. but they do lose bristles, other acid brushes I’ve used rarely did. If you can’t tolerate an occasional bristle coming out, these aren’t for you. But I feel like these are good for most applications for these brushes.

Good quality

These are the prototypical metal handle flux brushes I’ve been using since the 70s. Maybe not the same company, but the design and quality. When dealing with acidic flux, it’s best to use a natural bristle and a wooden handle, but the wooden handle isn’t that important as long as you’re being reasonably attentive. Boar hair. Mic drop! They work, and I now have 36 of them for a great price. They say you should only use a flux brush once to avoid contaminating your flux or the workpiece of metal jewelry or pipes or whatever; however, isopropyl alcohol will clean these brushes as long as you are thorough. In my experience there is a stray bristle or two once in a while and these offer a firm brush for applying goopy flux as well as boric acid flux. If using boric acid flux, be sure to rinse in water with baking soda to neutralize the acidic flux before cleaning with alcohol.