first brush resto ?

[mkevenson]

I have this brush which I would like to redo and put a Badger bristle in:

I have removed the rubber,black bristle holder and removed the old bristles. The inside diameter of the black holder is 28mm with a small ridge at the top. I have ordered a 28mm silver tip boar knot from Golden Nib. The only one they had in that size.

"28mm x 75mm Finest Silvertip badger hair knot, with extra stuffing. Softness 2. Base diamiter is between 27 & 28mm"

The height of the black holder is 24mm so does this mean that the loft of the knot will be 51mm?

Also wondering if there is a preferred glue to use. I have a 2 part epoxy by Loctite, doesn't say if it is water proof or not.

Any suggestions to a first timer in the brush resto dept.

 

[mretzloff]

You need a marine-grade epoxy. Sorry, that is all the advice I can offer.

 

[airplanedoc]

I went to the local farm and fleet (a farm hardware store here in IL) in the automotive section they had a selection of expoy for $1.99 I got a small tube of marine grade dries underwater exoxy, they also had kitchen/bath that looked to be the same thing. waterproof and dried underwater.

 

[Schwert]

If that knot bottoms out well in that old holder it will give you about a 51mm loft. (the knots vary a bit...so plus or minus a bit).

That should be good for that silvertip I would think, but you can increase the loft if you wanted to by putting some shim material in there first (epoxied layers of cork for instance). Shorter loft you really cannot do.

I like to use slower setting epoxy for my wood work. I use System Three epoxy with a 12 hour set time. However something in the 30 min set time is also quite good. I do not like 5 min epoxy as it just does not allow too much work time.

I do not favor the super cheap epoxies much. You do not need one that cures underwater. Marine grade epoxies are meant to have water exposure for long long times....hardware quickset stuff is rarely this high grade material, but even it will likely be OK in a brush. I would spend a bit more up front and buy decent epoxy though.

 

[airplanedoc]

FWIW I have done numerous composite layups for structural components on military, commercial, and civilian aircraft as well as sailboats. In my opinion$300+ epoxy systems are not necessary for the restoration of a shave brush, you will do just fine with a $2 tube of 2 part mix from the hardware store.

Would I trust my life or that of anyone else to a that tube of epoxy? No, but if you are applying that much shear or tensil force to your shave brush you are probably doing something wrong.

Marine epoxy is generally used because your bush will be in a wet/damp enviornment most of the time from use or humidity in the room. Kitchen and bath epoxy will work just as well.

For a Single brush, just get the tube, for a milk crate of them get the big cans and mix your own.

AirplaneDoc

 

[mkevenson]

Thank you all for your suggestions. I will let you know how it turns out.

Mark