Grinding Bits

That's going to remove a lot of material in a really big hurry. Also, I'm no chemist, but I wouldn't smoke a pipe with JB weld inside the bowl.

Have you ever smelled JB Weld? It smells nastier than oxidized vulcanite, closer to rancid tractor grease. Heating up that epoxy and smoking it is.... ugg, I just threw up a little in my mouth, bleh, yuck, yuck yuck...
As for the stone bur, :D It's your pipe...

TH, Let us know how it worked.

Hmm, well, yes, let us know how that works for you. Maybe that stuff smells good to someone, mmmmm maybe.

TH a power tool is probably too aggressive. Even a manual reamer can cause a lot of damage if you're not careful. Properly used a Castleford reamer set gives a more uniform and symmetrical bowl than a power tool would, unless your fairly experienced.

If you had your heart set on all of this, why did you ask? And, JB Weld does melt and burn. I work with it when making molds for casting. To get it off of my tools, I burn it off. Smells wonderful.

Ok, sorry, you had mentioned the JB Weld, so I thought that you were laying it out on the table for us.
My thoughts on the bur. I use one of these to sharpen tools, and in certain instances I have tried using it on other things. It doesn't work a flip on sharpening for me, as it tends to gouge up the hard metals, and not work on softer ones. Sand papers work by allowing particles of the abrasive to dislodge thus allowing the paper not to become clogged up and stop working, until all of the abrasive has rubbed off. But, a stone bur has no such mechanism. It will just clog up with soft metals and wood. Now, I've not used one with cake, but my thinking is that the cake is resinous, so it will clog fast. I've not tried it, but that's my speculation. Thus, I'd be curious to hear how it works for you.
Is that better? ::

There is a thread from about 2 weeks ago that talks about a different brand, same style of reamer as the CF. I can't remember the name, but it was beefier, supposedly.

Whoa whoa, who told you dried JB Weld is nontoxic? That's not what the makers material data sheet shows, although it does show low toxicity. As to heating "INHALATION: Vapors are unlikely due to physical properties. Not a problem unless heated"

Hmmm... the MDS is a legal document though. Perhaps if toxicity is low enough they can use the term nontoxic. Either way, as long as it's far from the lighter or match, it's probably not going to get too hot. I think I'll just count myself lucky I have yet to need glue in a pipe.

So I have a question, are these actual cracks you are trying to fill or are they just gouges in the wood? When I do pipe repairs, if it is just a gouge or low spot that needs to be built up a little how I handle it is completely different than if it is a crack. In some of the above post, it seems like the issue is referred to as a gouge and in others it is referred to as a crack. Just trying to get a clear picture in my head what the issue is. Or am I just confused.
Wes

I'll put my two cents in here. When I was repairing an old Dunhill with a chunk missing from the bowl I glued in a piece of briar with an epoxy made by JB Weld called Wood Weld. I read about using JB Weld from Reborn Pipes, and figured this might work better as it's made more for wood. Yes I got some on the inside of the bowl, but when finishing the inside, I used a dremel on low speed with the sanding drum and the cone shaped stone too. I knew that there would still be some glue left around the piece I glued in, but I had planned on coating the inside of the bowl with pipe cement. I glopped in a lot of cement, and after it dried, sanded it smooth, and gave it another coat after a few days with some cement made with cigar ash, hookah coal ash and rum. (no I don't smoke a hookah, but I had some coals my wife bought for using with incense resins)

This stuff made a rather hard cake in the bowl and only needed a little light sanding. I'm not passing judgement on the JB Weld issue, but with the bowl cake I have never tasted anything remotely glue like in the number of times I've smoked this pipe. Like I said before, if it explodes, or starts falling apart, it's going to become a squat pot!
Oh and the sanding drum on the dremel at low speed is great for removing cake as is the little cone shaped stones. BUT! you must move quickly, smoothly and be careful when doing this. A light touch is all you need.