By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Until July 27th

What material is it

All Topics | Latest Posts

Search for:  in Thread Title in  
Hopper17/12/2018 03:03:17
avatar
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
avatar
1591 forum posts
66 photos

Gentlemen,

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
avatar
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!

Brian

Nicholas Farr17/12/2018 09:23:27
avatar
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!

Brian

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

JohnF,

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
avatar
514 forum posts
12 photos

Could be Beryllium Copper.

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Support Our Partners
Meridienne Sept 2019
Eccentric July 5 2018
Ausee.com.au
Warco
TRANSWAVE Converters
Eccentric Engineering
ChesterUK
Allendale Electronics
Sarik
emcomachinetools
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest