Setting a knot

[Uncle Shakey]

When setting the knot in the hole does the epoxy have to come all the way up the side of the hole or just enough to cover the resin part of the knot? Also someone mentioned siliconing after the epoxy dries. Is that necessary? If so how is it done?

 

[roughneck]

I used jb weld to fix a knot in a brush and have had no problems with it. I did not put enough to come up the sides for fear that it would get on the hair.

 

[fidjit]

When setting the knot in the hole does the epoxy have to come all the way up the side of the hole or just enough to cover the resin part of the knot? Also someone mentioned siliconing after the epoxy dries. Is that necessary? If so how is it done?

I just roughen up the knot (resin part) with a little sandpaper and put the smallest amount of two part epoxy on the bottom and sides of the resin holder and slot the knot in.

I don't want the epoxy pushing up into the top of the hole and spilling out when the knot goes in. Neither do I want too much glue coming up and getting on the bristles.

If you've got the right size knot and depth then there should actually be no room to fit any silicon around the side of the knot hole.

Hope this helps.

Edit:
Ahh, I think I'm the one that confused you with my Everready Restore . I had to silicon around the resin knot from the inside ( luckily this one came apart ) because of having to drill out the standard shelf, the size of the knot I used , the depth I wanted to set the knot and the size of the hollow on that Everready. Sorry I didn't get to document that restore better because of time constraints. Don't worry about this if you're using the standard shelf. The Everready was a "special" case

 

[Dpflaum]

Out of curiosity, anyone tried CA glue to hold a knot it? I used some to move a boar knot in a little metal cup from a Semogue I broke the handle on to an old handle. Seems to be holding up just fine but I'm curious about the long term feasibility.

 

[Uncle Shakey]

I have a similar situation with one that the knot came out of. It is a hollow handle with a small ring protruding from the side that the knot sits on. I plan to fill the handle with acrylic or body putty to create a shelf. The hole is a lot bigger than the knot. Is it feasible to use a very generous amount of epoxy when installing the knot to take up the extra space?

 

[Penworks]

Out of curiosity, anyone tried CA glue to hold a knot it?

Personally, I would not use super glue. it works great for hard surfaces like you repaired, but that stuff can be pretty nasty. Super glue in larger amounts to seat a knot can developt allot of heat and burn right through the plug and even burn the bristles off. I would avoid it. JMO

 

[gollum83]

I have a similar situation with one that the knot came out of. It is a hollow handle with a small ring protruding from the side that the knot sits on. I plan to fill the handle with acrylic or body putty to create a shelf. The hole is a lot bigger than the knot. Is it feasible to use a very generous amount of epoxy when installing the knot to take up the extra space?

You mean fill it in and install the knot at the same time? No, I wouldn't. Ideally you want the know resting on something solid. If it's resting on a huge pool of epoxy, then it might sink or result in the knot going in crooked, Sure the brush would work fine once everything sets up, but you might not be pleased with the result. Fill it in first, let that dry, then install the knot. Also, if it was me, I would consider filling it in with something like part of a cork from a wine bottle. It would take considerably less time that to dry, if you epoxy that into place, rather then just epoxy.

 

[Uncle Shakey]

Matt, I think you misunderstood me. I mean to fill the handle and let it dry to create a shelf. Then when I install the knot the hole is much larger than the knot (widthwise). Would it be fesable to use a generous amount of epoxy so that it contacts the bottom of the knot and enough extra to contact the sides of the knot as well as the sides of the hole.

 

[gollum83]

Matt, I think you misunderstood me. I mean to fill the handle and let it dry to create a shelf. Then when I install the knot the hole is much larger than the knot (widthwise). Would it be fesable to use a generous amount of epoxy so that it contacts the bottom of the knot and enough extra to contact the sides of the knot as well as the sides of the hole.

Yep, I must have. Sorry.

No, that sounds fine.

 

[Uncle Shakey]

Matt, Thank you.

 

[Schwert]

I have always set my knots (in the two I have done) so that the epoxy squeezes up to the top of the handle. I don't want a cavity in there to hold water.

I just put epoxy in then lower the knot in carefully watching the epoxy rise...if it is too much I take some epoxy out...too little add more. I want just a hair of epoxy to show, which I then clean off with a Q-top dampened with rubbing alcohol.

 

[gaj90027]

I contemplated this on my restore also and came to the conclusion that I would probably make a huge mess if I tried to fill it to the very top with epoxy. I also felt that any water left in the small cavity would be promptly ejected when I shake my brush after shaving. I also hang the brush upside down to dry after shaking it.

My brush had a hollow handle which I filled with tub and tile sealer to the desired height. The sealer I used dries rock hard and is waterproof. Anyway, once the sealer was completely dry (24 hours) I put a big ol' squirt of epoxy on top and set the knot.

Worked like a charm

I have always set my knots (in the two I have done) so that the epoxy squeezes up to the top of the handle. I don't want a cavity in there to hold water.

I just put epoxy in then lower the knot in carefully watching the epoxy rise...if it is too much I take some epoxy out...too little add more. I want just a hair of epoxy to show, which I then clean off with a Q-top dampened with rubbing alcohol.