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I’ll generally do them with the torch. It’s a bit less elbow grease and the filing/sanding is quite easy going as you’re removing silver which is much softer than steel.
I also have a few different ‘surface preparation’ discs that go on my drill (or grinder) which are a kind of a plasticky polymery abrasive thing. They will remove silver much faster than they remove steel so you can kinda blast over it and get a lot off pretty quickly but used incorrectly they will definitely remove steel so it does take some finessing. I don’t use them in the grinder much as with the higher rpm it’s a lot easier to over do it.
I’d say that I’ve made the mistake of cutting too close to the tube with a hacksaw and nicking it more often than I’ve gotten the heat in the wrong place and pulled too hard and deformed anything doing it with the torch.
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M_V
@Phes
Cheers for the heads up dude!
Ahh I hadn't considered that filing & sanding would be necessary after de-brazing. Thought I could just get away with melting the silver 'til the braze-ons fall off and the silver melts flat against the tubing profile.
So since filing & sanding is gonna be an inevitable part of the process whether I use a brazing torch or not, I'm thinking it might just be better to take off the braze-ons purely via filing & sanding.
Suppose one advantage of not using the brazing torch is that I wouldn't be risking warping or deforming the tubes from the heat.