Tony Martyr | 03/04/2011 11:53:37 |
![]() 226 forum posts 45 photos | 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? |
Clive Hartland | 03/04/2011 12:07:48 |
![]() 2929 forum posts 41 photos | 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 |
JasonB | 03/04/2011 13:17:28 |
![]() 25215 forum posts 3105 photos 1 articles | 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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