3305 forum posts
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 perman||17/12/2018 08:21:52|
1479 forum posts
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.
|Brian H||17/12/2018 08:33:11|
1041 forum posts
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 Farr||17/12/2018 09:23:27|
1741 forum posts
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.
Edited By Nicholas Farr on 17/12/2018 09:26:53
|John Reese||18/12/2018 02:52:02|
|678 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 1||18/12/2018 20:54:05|
487 forum posts
Could be Beryllium Copper.
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