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What material is it

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Hopper17/12/2018 03:03:17
3651 forum posts
72 photos
Posted by martin perman on 16/12/2018 13:47:24:

... I've just given up trying to drill a hole through a slice I cut off, its wearing out brand new drills without hardly making a cut, the drill just polishes the metal.


Did you try slowing the spindle speed way down? And drilling a small pilot hole first?

If so, you may need to anneal the bronze before trying to cut or machine it.

Edited By Hopper on 17/12/2018 03:03:50

martin perman17/12/2018 08:21:52
1591 forum posts
66 photos


I'm doing this as a favour for a friend and its costing me money, three worn out and broken bandsaw blades, and time trying to machine, for me, the impossible. I dont have or use HSS tooling.

I've now asked my friend to source some different material.

Martin P

Brian H17/12/2018 08:33:11
1134 forum posts
85 photos

Another way to identify it is to try and silver solder it. If it's ali-bronze, it won't.

Don't ask me how I know!


Nicholas Farr17/12/2018 09:23:27
1881 forum posts
919 photos
Posted by Brian H on 17/12/2018 08:33:11:

Another way to identify it is to try and silver solder it. If it's ali-bronze, it won't.

Don't ask me how I know!


Hi Brian, I don't quite agree with you, below is a photo of a Ali-Bronze block Silver soldered to a Brass plate, that I did about 30 years ago. I don't know the grade of the Ali-Bronze, but I do know it is Ali-Bronze, it was hacksawed, filed and drilled from a worn out Ali-Bronze nut.

ali-bronze silver soldered to brass.jpg

Regards Nick.

Edited By Nicholas Farr on 17/12/2018 09:26:53

John Reese18/12/2018 02:52:02
746 forum posts


Thanks for suggesting an off center point on the drill. It solves the problem of the hole tending to close around the bit.

mark costello 118/12/2018 20:54:05
514 forum posts
12 photos

Could be Beryllium Copper.

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