Hi Veni,
If you can cut slabs of your PVC with something other than the lathe
(bandsaw?), 6" pulley shapes would be achievable on a 7x using a
face plate. You'd need to attach your work to the plate using bolts
through the work at staggered radii. The staggered radii would
permit removal of some of the bolts for a staged facing operation
without dismounting the job from the plate. The standard Sieg face
plate is 180mm (6.3"). After facing one side, flip it so that
becomes the reference flat for all remaining operations.
John
--- In 7x12minilathe@..., "roylowenthal"
<roylowenthal@...> wrote:
Delta used to offer a compound slide attachment for their wood
lathe
to allow limited use with metal lathe tooling. I've never seen or
used one, it stuck in my memory because it was such an oddity.
The 7x12 metal lathe only swings about 4 - 4 1/2" over the
carriage,
you can face & do peripheral cuts on thin larger pieces. If you
mount a large chuck you get limited by the jaws striking the bed.
I
think you can use a 5" chuck, with a 4" the lathe "looks" right.
If you look at the imported wood lathes, you'll find they're not
very
robust. You might get away with spinning on one, I don't think it
would be a fun experience. The one dedicated spinning lathe I
ever
used was noteworthy for how robust it was; heftier than the old
Delta
wood lathes. For something the size you're trying to make, you'll
need a larger, stiffer machine than either a 7x12 or a cheap Asian
wood lathe.
Roy
--- In 7x12minilathe@..., "veniaver2006@"
<veniaver2006@> wrote:
Hi machinists,
Wonder if turning a PVC cylinder OD= 6", conversely
to make plastic or basic aluminum pulleys) could be
done on a wood lathe.
Know that it will work as spinning lathe (with a
heavier motor) but doubting it will does
plastic/metalworking of small pieces (up 6")
It's an imported WOOD lathe (40" axis length )
If it shouln't be possible, before ordering a 7x12
brand new , alternatives are:
1. To upgrade it for doing 'basic aluminum turning'
with a 6" (or greater) chuck (3 selfcenterd or 4 jaws)
2. Adapt a toolpost accessory as long with a toolpost
base to get 'parallel' turning
Wonder if all needed parts can be got from reliable
suppliers i.e. TheLittleMachine
/HF/Grizzly/Use-Enco/Homier /Cummins, etc , you named.
About labour cost, assume that it's a DIY approach to
a minilathe and let's say that that have some cheap
time for fun :)
Think that a 6" ( 7" or 9") chuck and toolpost will
have to cost under $200 otherwise , as floor space is
finite, will consider to buy a complete 7x12 just out
of the box.
BTW googlin' found chucks from China below 100 bucks.
I got inspired by an eBAY book that was offered last
week.
Alledgelly was written by Delta in the 40's, it's
publicize tjat some metal work can be done on a wood
lathe, built more ruggedly those years.
Any comment about metal turning on a wood lathe ?
It will be for doing repeatable turning of small
pieces , i.e. a small pulley.
It will have same diameter every time , so not quick
change needed.
Comments about pros and cons of modding a wood lathe
to do PVC/aluminum turning are welcome.
Related hints will be highly appreciated.
Veni
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