Previously I've documented what needs to be done to the lathe bed and
feet.
1. X bracing instead of cross bracing to reduce twist. Probably the
biggest failing of the stock design.
2. two rows of screws down the length into the edge of casting rather than
the bolts down the middle.
3. Larger foot under headstock with mounting ears for the motor pulleys
mount. This forms a triangle referenced to the base rather than flexing
the mounting table when the belt is tightened. I cast a new base for mine
with that intention but never finished the motor mount.
Remember. The restriction Dave Gingery had was his one quart crucible in
his charcoal foundry. That defines the size of the bed casting. I found
pouring in the middle ala Gingery resulted in warped beds. In the end I
built a runner that fed the bed from 4 locations.
If you can do an #8 crucible you have the option to lengthen the bed by
4". Do that and you can make the cross slide 2.5" wider than it is deep.
That prevents racking the cross slide and motion over the length of the
ways is easier.
The other major modification is to change over to 1/2" x 4" CRS for the
ways. But you have a lot of other dimensions to change when you do that.
Do remember, you can now buy a small 7x12 lathe for less than you can
build a Gingery. That's one with V ways, a full set of gears, variable
speed motor and cast iron. But build your own and what you learn from it
will last you a lifetime.
John Dammeyer
Automation Artisans Inc.
http://www.autoartisans.com/ELS/
Ph. 1 250 544 4950
> -----Original Message-----
> From: gingery_machines@yahoogroups.com
> [mailto:gingery_machines@yahoogroups.com] On Behalf Of damiankruger73
> Sent: Sunday, January 02, 2011 7:55 AM
> To: gingery_machines@yahoogroups.com
> Subject: [gingery_machines] Lathe Bed Modification - Mill bed style
>
>
> Hi All,
> I have searched the archives and trolled though photos but
> can't find any obvious reference to people who have modified
> the design of the lathe bed by making it the same style as
> the mill bed.
>
> While it will take a little redesign, the clear advantage is
> that the amount of scraping would be hugely reduced.
>
> Does anyone here have links or advice/suggestions/designs for
> modifying the bed in this way. Thanks in advance
>
> Damian
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
>
http://groups.yahoo.com/group/gingery_machines/app/peoplemap/view/map
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