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

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.

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.

Good enough for small one time paint touchups and spreading things like glues.I will try them for solder flux when the occasion arises.The only thing that BUGS me is that the resealable bag that they come in has tenacious adhesive that tends to grab everything making it very annoying when going to get a brush; the bag edge grabs my hand and half of the brushes end up on the floor (over and over). So trash the bag right away and use a ziplock!

I use these disposable brushes for applying glue building my woodworking projects. I can use them, wash them out, and use them again many times over before I have to throw them out. A small trick is to apply some superglue to the base of the bristles to keep them from coming out. The brushes can be used quite a few times before they have to be thrown away.

nice brushes

Fibers come out to easily, will look for better uality brand, use for wood glue frequently

The bristles are a little long on these for my purpose, but I just cut them down a little bit. I use them for flux.

I use these brushes for woodworking and classic car applications. The quality is great for one or two time use (after cleaning). Big Box can't compete with the quality & price.