So I won a lot off ebay with a sight unseen shave brush, not what I wanted the lot for but I'll take it. So I get it and it's pretty pitiful looking, I didn't even want to touch the knot let alone lather my face with it.
After searching here I found out Fuller was a fairly reputable maker known for selling door to door. So after looking through this section of the forum I figure, what the heck? For $20ish I can get into a good quality badger brush AND get to say I made it myself (more or less). So I taped it up and started drilling until it looked like I was into the Bakelite. Pliers weren't making any worthwhile progress so off to Lowe's I go to get a ball cutting bit. Now we're cooking! I got it all hogged out and pretty much cleaned up.
Now I've decided that I'll try out a Best badger knot from TGN. I considered a Silvertip and Finest as well, but I really like the scrubbiness of my boar brushes so I decided to try a Best for my first time out.
I measured the hole in the handle & it looks to be about 23mm, so I figure a 22mm knot is going to be my best bet. The depth of the hole is about 8mm right now, I just have to decide on how deep I want to set the knot. TGN has 22mm knots with a 65mm loft and 55mm loft. If I just stuck one in now I would be left with either 58mm or 48mm. I have seen 48-51 suggested for a Best badger knot so I figure it's as good a place to start as any. I am wondering if I should just go with the 55mm knot & epoxy it in place as is, or if I should take a forstner to it & use the 65mm knot. The forstner would help even out the base of the hole, but epoxy would fill all that in regardless. A 7/8 forstner bit is just a hair over 22.2mm so it should be a good size for the base of the knot along with a slight step out above where it's drilled. I have some room to drill down and I'm fairly certain the handle is solid, but I still don't want to drill down too far into it. So I figure this is the place to ask what way would be recommended to proceed with, I would really appreciate your input.