I have made the mistake of entering a number of online auctions to acquire vintage butterscotch bakelite Simpson brushes, as I intend on using the brushes and being a novice I suspect (well, I know really) that the auction lots do not contain rare or special ones however they are ones I like visually and plan on using on a daily basis.
I would genuinely appreciate advice and experience with cleaning staining from the handle ridges running around the circumference (it appears to be tannic staining of some sort), or restoring the surfaces of the handles (they have un-cracked handles) would be appreciated. I have had some thoroughly informative and educational corrospondence with our resident expert and paramount collector @Mark1966 but I thought I would initiate this thread so we could curate the collected wisdom into something permanent that I could go back to and other members could learn from if needs be.
I'm also additionally prepared for the cost of Simpsons re-knotting the brushes and am prepared for the cost and wait associated with the service. I would like to learn more about the options though when using Simpson's for this - i.e. what types of badger are available, are they restricted to type of handle. What are the usual costs, and how one goes about approaching Simpsons in a manner that is polite and or usual.
The two on the right are the ones I plan on having re-knotted, noting the staining on the centre brush and also on the one on the right.
I would genuinely appreciate advice and experience with cleaning staining from the handle ridges running around the circumference (it appears to be tannic staining of some sort), or restoring the surfaces of the handles (they have un-cracked handles) would be appreciated. I have had some thoroughly informative and educational corrospondence with our resident expert and paramount collector @Mark1966 but I thought I would initiate this thread so we could curate the collected wisdom into something permanent that I could go back to and other members could learn from if needs be.
I'm also additionally prepared for the cost of Simpsons re-knotting the brushes and am prepared for the cost and wait associated with the service. I would like to learn more about the options though when using Simpson's for this - i.e. what types of badger are available, are they restricted to type of handle. What are the usual costs, and how one goes about approaching Simpsons in a manner that is polite and or usual.

The two on the right are the ones I plan on having re-knotted, noting the staining on the centre brush and also on the one on the right.