Cutting disks of 1/16 hard brass

This topic has 3 replies, 3 voices, and was last updated 3 April 2011 at 13:17 by JasonB.

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3 April 2011 at 11:53 #66439
Tony Martyr
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@tonymartyr14488
I have to make the hinged lids for the water filler points in the side tanks of my 3 1/2″ loco. I need to make three neat edged disks from hard brass plate 18-20 gauge thick. At work, long ago, I used to cut out much lager disks for windage baffles by fixing the brass plate to a wooden board mounted in a 4 jaw chuck and then slicing them out with a sort of parting-off blade (trepanning?)

Is this the standard method or is there an easier method that does not require a hole in the centre of the disk?
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3 April 2011 at 11:53 #5468
Tony Martyr
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@tonymartyr14488
3 April 2011 at 12:07 #66441
Clive Hartland
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@clivehartland94829
Your first thought is the right one for you Tony, it should be quite easy to mount the brass sheet on a piece of prepared wood. Plywood would be OK. Securely fix the brass and turn your discs with a trapanning tool.

The other alternative is if you have a local engraver he may be able to cut your discs for you on an engraving machine. It is only a matter of making a master with a circle that the stylus can follow and cut the discs. I have done this many times.

Clive
3 April 2011 at 13:17 #66446
JasonB
Moderator
@jasonb
I’ve done it with a bit of double sided tape on a scrap of MDF and a small pressure pad held in place with the live centre and just used a standard turning tool. Just cut the work into an octagon first to save having to turn a lot away

All these access plates were done as above, small ar 16″ large one 3/32″

Edited By JasonB on 03/04/2011 13:18:08

Edited By JasonB on 03/04/2011 13:49:23
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Cutting disks of 1/16 hard brass

Cutting disks of 1/16 hard brass

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