I want to make a quantity of the part shown in the drawing from stock brass angle 10 x10 x1.5 or imperial equivalent.

Where suppliers state the type of brass angle they tend to quote CZ121 which looks to be formulated for best machining quality rather than bending.

I need to start from stock material as I don't have the equipment needed to form the angle from sheet stock which has optimum bending qualities.

My question is how readily can 1.5mm thick CZ121 be formed to a 5mm radius on a scale from "piece of cake why even ask" to " you have got to be joking mate"

Also will heat be needed – desirable – helpful – essential etc

This will affect how I design and build the bending tool.

n.b. The overall length will be about 300mm. The drawing just shows this particular formed feature.

TIA

Bob

Edited By 9fingers on 18/01/2015 10:32:50

Hi Jason,

Thanks for the rapid response.

No sadly the length is not to scale – overall about 300mm and I'll need to make about 20 off.

They are part of a guide system for barrister bookcases that I'm making to a custom design.

Bob

Thanks Michael, I did not know that but I'm getting the picture.

Looking at your link, CZ121 seems to be workable hot which could be an option – anyone got experience?

I presume the angle must be hot drawn in the first place?

Alternatively Is angle available in consumer quantities in cold forming alloys? Bearing in mind that I also have to do some limited machining on the parts to a visible standard eg clean csk holes.

Bob

Hi Julian,

Thanks for your reply.

Are you suggesting the heat to anneal the brass followed by cold(cooler!) forming or forming whilst at dull red temperature?

The latter will mean my jig will need to be quicker fitting than the current back of envelope design supports with several screws to be tightened before bending.

TIA

Bob

Edited By 9fingers on 18/01/2015 10:59:32

Edited By 9fingers on 18/01/2015 11:00:04

Possibly a good idea. I've just ordered a sample from fleabay.

Cheers

Bob