Re: [CAD_CAM_EDM_DRO] Re: router for sheet metal

Sandwich it between two thin sheets.

Garry

To: CAD_CAM_EDM_DRO@yahoogroups.com
From: Alan Marconett KM6VV <KM6VV@...>
Date sent: Thu, 17 Oct 2002 12:32:37 -0700
Subject: [CAD_CAM_EDM_DRO] Re: router for sheet metal
Send reply to: CAD_CAM_EDM_DRO@yahoogroups.com

> Hi Tony, Alex,
>
> I have a similar need. A small flat spring for a digitizer probe I
> built. I need a small flat spring made out of something like phosphor
> bronze, or steel. .006" thick (??). But as it's only about .5" long,
> it's a little hard to machine! Glueing/soldering it down to PCB
> material might work. I will need a tiny endmill to mill it out, I can
> generate the Gcode easily enough. I was also thinking that this flat
> spring could also be made by EDM, although I have no equipment for
> this!
>
> Perhaps glueing/soldering to PCB material would work in you case too
> (let me know!).
>
> Pix at:
> http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/Digitizer%20Probe/
> ProbeSpring2.jpg
>
> Look under files / Digitizer Probe / ProbeSpring2.jpg
>
> Alan KM6VV
> P.S. MSC doesn't carry silver solder (high temp)? Anyone have a
> source? I've got crankshafts to fabricate!
>
> Tony Jeffree wrote:
> >
> > However, there are always ways of surmounting these problems,
> > depending upon quite what you have in mind, and how much time you
> > have to do it.
> >
> > I have successfully milled out shapes in sheet brass to make clock
> > parts; a good and perfectly practical method is to attach the sheet
> > to a sacrificial plate of some kind with a suitable adhesive - for
> > example, double sided tape on a block of MDF (Medium Density
> > Fibreboard - that stuff that is supposed to generate carcinogens
> > when you machine it). The only thing you have to watch is that the
> > heat generated during cutting can weaken the adhesive if you cut too
> > fast; however, the strategic use of a few screws through the scrap
> > areas of the sheet can alleviate this problem.
> >
> > See:
> >
> > http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/Tony%27s%20files
> > /Clock2.jpg
> >
> > All of the brass sheet components of this movement (front and back
> > plates, dial, wheels, & one or two others) were machined using the
> > technique described above, using a Taig CNC mill and a 1/16"
> > diameter end mill.
> >
> > Regards,
> > Tony
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
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