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Model Forum / General / Models / May 2007Dissolving steel in Brass
I've got a 1.2mm drill snapped off in some brass, is there any way dissolving it out? I thinkI remember something about Alum. Thanks Alan Alum is correct Alan. Dissolve alum in water and immerse your lump of brass overnight. Cliff Coggin Kent UK > I've got a 1.2mm drill snapped off in some brass, is there any way > dissolving it out? I thinkI remember something about Alum. > > Thanks Alan > Alum is correct Alan. Dissolve alum in water and immerse your lump of brass > overnight. > > Cliff Coggin > Kent > UK Wear gloves to avoid dissolving Alan in Alum <G> AWEM >Wear gloves to avoid dissolving Alan in Alum <G> Wear RUBBER gloves to avoid dissolvig gloves and Alan in alum <BG> Regards, Tony > On Sat, 26 May 2007 10:37:34 +0100, "Andrew Mawson" > [quoted text clipped - 5 lines] > Regards, > Tony Many Thanks Alan I frequently have to remove steel pins from brass musical bo cylinders. The stuff to use is dilute Sulphuric Acid (Car Battery Acid). Please be careful with it, its not for playing with !! Sharpen your drills with a tiny flat on the cutting edge, it wont gra then. Phi -- pgp00 > I frequently have to remove steel pins from brass musical box > cylinders. [quoted text clipped - 3 lines] > > Sharpen your drills with a tiny flat on the cutting edge, it wont grab > then. > > Phil Surely that will dezincify the brass? Won't you end up with a copper sponge ? AWEM Hi Andrew A fair point. You must not leave it in any longer than is needed to remove the pins this is how it has been done for the last 100 years or so and it seem to work a treat if you are careful with the acid strength, typically 1 hours will do the job in dilute Sulphuric. Phi -- pgp00 |
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