Matthew,
At least in my shop, making a Gingery machine is a very big deal and takes many months to complete. Most of my time is refining what I have or making much smaller machines. I do think it is fair game to talking about building anything that is in the Gingery style. That includes finding ways to make something more accurate without measuring (like match drilling).
Maybe collectively, as a group, we always have some Gingery work going on and that is great.
When I start a new project, I do often consider if it would be a good candidate for casting. In almost all cases it is far easier to cut from stock. I do find that rather disappointing. I've actually done more injection molding of plastic with my Gingery Injection Molding machine that casting of aluminum since making my shaper.
I think it would be interesting to publish what kind of accuracy each Gingery machine achieves. My Gingery drill press seems to be the same as any old drill press. It knocks holes just fine but I would not compare it to my RF30.
Rick
Rick.Sparber.org
On Sep 12, 2011, at 4:51 AM, Matthew Tinker <mattinker@yahoo.com> wrote:
> Rick,
>
> I don't think it's anti-precision talk, but more "I can't see myself being able to do that with Gingery machines". The number of posts by Gingery builders is relatively low, un-fortunate, as there's always something to learn reading a build no matter how many you've read. The degree of precision depends far more upon the operator than the machines!
>
> I freely admit to having built a Gingery "ish" dividing head and tooling for my Clarkson Mk I tool and cutter grinder, I build tools to make tools based on both my steel construction back-ground my varied work experience and the books, not conform to true "Gingery" practice, but I owe him a lot. Very useful technique like dividing out equally strange numbers onto the dividing plates before I had any anything other than a junk pillar drill is just one off many examples!
>
> Today's precision machines came from this kind of approach. hand made machines can be extremely precise!
>
> Regards, Matthew
>
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