Rick,
When you say "a new method," do you mean new compared to the mirror-image-on-clear-plastic that you described earlier, or are you also including new as compared to the standard machinist route using a dividing head and number stamps?
I understand that you want to try an etching method, and if you succeed I will be interested in seeing your results. My suspicion is that it will not be as clear and crisp as the dividing head look ... but of course, I may be proved wrong.
A year or so ago, a participant on the Practical Machinist forum described his rebuild of a large bandsaw (over a span of many, many posts); IIRC, one segment detailed his re-creation of some machine plates using an etching process. These were flat, however, rather than cylindrical -- a much easier proposition. Still, might be worth looking at for ideas, if you haven't already seen it.
When you say "a new method," do you mean new compared to the mirror-image-on-clear-plastic that you described earlier, or are you also including new as compared to the standard machinist route using a dividing head and number stamps?
I understand that you want to try an etching method, and if you succeed I will be interested in seeing your results. My suspicion is that it will not be as clear and crisp as the dividing head look ... but of course, I may be proved wrong.
A year or so ago, a participant on the Practical Machinist forum described his rebuild of a large bandsaw (over a span of many, many posts); IIRC, one segment detailed his re-creation of some machine plates using an etching process. These were flat, however, rather than cylindrical -- a much easier proposition. Still, might be worth looking at for ideas, if you haven't already seen it.
--- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" <rgsparber@...> wrote:
>
> Mitch,
>
> There are many ways to engrave and/or stamp dials. I'm looking for a way to do it with etching. My goal is not the dial but rather a new method.
>
> Rick
>
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Mitch Davis
> Sent: Tuesday, March 19, 2013 7:50 AM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Re: etching the OD of a cylinder to create a graduated dial
>
> On Tue, Mar 19, 2013 at 10:51 AM, Rick Sparber <rgsparber@...> wrote:
> >
> > How would the stepper fit into my plan to etch the dial?
>
> Maybe the stepper could rotate the cylinder and a tool could carve the graduations. Etch, carve, as long as you end up with the graduations
> :-)
>
> Mitch.
>