Radius on a bush

Radius on a bush

This topic has 7 replies, 4 voices, and was last updated 7 February 2013 at 11:18 by Bob Perkins.

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7 February 2013 at 08:38 #111210
Bob Perkins
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@bobperkins67044
I need to make a bush to sit nicely in/on a pice of 48mm OD brass tube. It will be silver soldered in place. There is a picture below, sorry about it's size but it can be viewed from full size in my Sabine album. I would like advice on the best way to form thr 24mm radius to sit on the tube please.

Thanks

Bob P
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7 February 2013 at 08:38 #15621
Bob Perkins
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@bobperkins67044
7 February 2013 at 08:52 #111212
JasonB
Moderator
@jasonb
How thick a wall is the tube? can you put a 16mm counterbore in the hole.

If not then maybe make the bush in two parts with a shaped sleeve that can be soldered over a standard top hat bush.

J
7 February 2013 at 09:56 #111221
Bob Perkins
Participant
@bobperkins67044
The tube is only @ 20 swg so not enough to counterbore.
7 February 2013 at 10:14 #111225
Michael Cox 1
Participant
@michaelcox1
I would make the bush in two parts. The two parts should initiallybe a loose fit. The inner part I would then knurl. The two parts can then be pressed together, finished turned and drilled through. Finally, it could then be soldered in place on the 20 swg tube. The knurling serves the two functions of forming a press fit and providing channel for the solder to flow into.

Mike
7 February 2013 at 11:00 #111231
Terry Lane
Participant
@terrylane
Jason and Michael have got your answer – a fabrication. That's the only way I've ever managed it.
7 February 2013 at 11:17 #111233
Bob Perkins
Participant
@bobperkins67044
Thanks all I'll make it in bits.

Jason, the profile on the bush looks similar to the one on your fine looking pith helmet. Did you fabricate that ?

Bob P..
7 February 2013 at 11:18 #111235
Bob Perkins
Participant
@bobperkins67044
Sorry Jason I was referring to Tel's fine pith helmet!
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