I'm pretty biased on the Gingery machines! Saying that I believe machines can be made bolted together, but thinking of all the internal stesses that are relieved by drilling holes and torque applied by bolting it can be tricky to say the least!
My thoughts would be to combine both castings and slab bolting to achieve strength and rigidity. If no machine tools are available then it just takes longer to build the first machine. Accuracey and a better machines then can be made. Rome was not built in a day, nor was a handmade machine.
Cheers Wonk
--- In gingery_machines@yahoogroups.com, David Frantz <websterindustro@...> wrote:
>
> He may have good reasons for no castings, I really don't know. My problem with the bolt together idea is getting good results especially without the use of machine tools and a welder.
>
> I Suppose one could take hint from Gingery to use the first machine to build a much better second machine. Plus it does depend some upon what sort of flat stock you use. It would likely be better to build out of Aluminum or Steel blocks. You could come up with a very good lathe this way. The problem is I don't see a way of doing so without at least some shop tools to begin with.
>
> The mentioned multi machine projects, which are an interesting concept but leave with the same impression, that is you need tools to really do the machines well. In the case of the multi machines you can buy a lot of the stock precut. Beyond that they make use of the cast-iron blocks in such a way that it makes up for the lack of castings. However there seems to be an assumption that either you or somebody else will be machining some of the parts.
>
> In the end it depends upon what you are after. I'm certain a lathe can be bolted together but like you I'm not to sure about the results. Especially considering that results can vary widely based upon who and what is bolted together. At least with the Gingery you get a known level of performance with weak points that are documented. I suspect that one would need prior experience with metals and metal working to produce a good bolt together machine. So yeah the potential is for problems.
>
> Sent from my iPad
>
> On Jun 30, 2011, at 1:46 AM, Wonk <tiwonk@...> wrote:
>
> > Dennis,
> >
> > The million dollar question - why no castings? Dave proved they are easy to make and fairly cheap! If strength is a factor for wanting steel plate, the ZA-12 or other alloy can be used to make the castings stronger. If rigidity is a factor then more engineering into design. if your health is limiting your ability to make castings then maybe someone close by would be willing to help? Depending on the machine I can see problems with bolt together design, to each his own!
> > The Multimachine group has been doing some good work in machine building.
> >
> > Good Luck Wonk
> >
> > --- In gingery_machines@yahoogroups.com, "DennisF M" <a1g2r3i@> wrote:
> >>
> >> Dear Group
> >> I am looking for direction on what to enter in a Gingery group search field about similar Gingery shape/size machines as depicted in uncle daves books but that are made using stock plate, flat iron, angle iron, round stock, channel iron, square tubing, pipe. I would prefer without any welding as well. If anyone knows the name of such a builder, I have found the name of posters work in the search fields also.
> >>
> >> keep smiling
> >>
> >> dennis mac
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> >
> >
> >
>
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