I'm currently finishing up an X-axis variable speed drive that I'll be posting shortly, total cost $50.
As for the accuracy of these DROs, I've already made several projects relying soley on these for laying out circular bolt patterns with +-.001" toleances and fitup has been perfect. I guess for a HF quality mill with its own limitations of accuracy, these devices are a perfect match. If I wanted to maintain .0001" tolerance I'd choose a more expensive machine.
--- In GrizHFMinimill@yahoogroups.com, Gary Liming <g_liming@...> wrote:
>
> Very nice job, Rick. I like the bent clear (acrylic?) covers. What technique did you use to do that?
>
>
>
>
> ________________________________
> From: Rick Grimm <grimmrlg@...>
> To: GrizHFMinimill@yahoogroups.com
> Sent: Thursday, December 1, 2011 9:13 AM
> Subject: [GrizHFMinimill] My $106 HF Mini-mill 3 axis DRO
>
>
>
> I recently purchased a HF mini-mill and my first series of changes were to add 3 axis DRO, pulley drive, and gas spring. I purchased 2 12" and 1 6" iGaging DRO remote readout scales from Grizzly, with shipping it came to $106. I followed some of the previous posters installs with some changes to fit the HF mill, for example the X axis hangs out on the left side of the table instead of the right.
>
> Rick Grimm
>
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