Synthetic sable brushes

I have been using sable for many years, and apart from wear from friction at the tip, they generally stay in good condition. They are sometimes exposed to strong solvents like acetone without seeming to suffer.
I would also like to change to synthetics but, although they feel very nice to use in the beginning, all that I have tried have quickly started to splay.

One particular case I found interesting was where the fibres splayed right near the tip, like a palm tree.
Cleaning with anything (soap, mineral spirits, turpentine, acetone), seemed to make no difference and I thought the fibres must have been damaged by solvent. However, I found the tip was restored after using paint stripper!
To me, this implies that the paint bonds with the synthetic, (at least this type of synthetic), more readily than it does to natural hair. I’m no chemist though.

I have also seen quite a few complaints about synthetics not lasting very long at the ‘Painting Best Practices’ group on Facebook.

Ron Francis

​Trekell makes high quality synthetic brushes.  https://www.trekell.com. I really enjoy how they handle paint. On the  recent Savvy Painter podcast there is a Q and A episode with the owner and specialist discussing their brushes and panels. Give ’em a try. 

​Thanks so much Matthew, Kristen, Ron, and to the poster who suggested Trekell. Kristen, to answer your question, I work directly as opposed to in glazes but thin my paint with Gamsol and linseed oil until it brushes on smoothly. I try to strike a balance of fluidity and opacity. I also work on a very smoothly sanded acrylic or oil ground. My paintings have gestural passages which fade into flat color fields and surface is an important component. For the gestural passages, I like to use soft, round brushes that maintain a nice point. In the flatter color fields, I use larger, soft, flat brushes. Because of the way the transitions are composed though, the round brushes make up some of the color fields before the flat brushes take over. I’ll often have over ten brushes going in a single painting to help me keep the colors clean. Like Ron mentioned, synthetic sable brushes start out nice and then get easily splayed which is frustrating. Sable is cost prohibitive because I use so many brushes, and I also prefer not to use animal products. I will look into synthetic mongoose and Trekell brushes, and try cleaning my splayed burshes with paint stripper.  Thanks again! -Aliza