Holding a cone in the lathe....
 

I need to hold a stainless cone while I trim and bevel it in the lathe.
Any ideas on how to hold the cone?

One thought was to weld the big end to a a base plate and then use the tailstock to support the other end.


I might also turn an aluminum cone and slide it over and ecure it with ????


You can see a picture of what I'm trying to hold as the third picture down he

http://unreasonablerocket.blogspot.c.../03/parts.html

Or He

http://www.mcmaster.com/library/5/560702/44675K460l.gif


Paul

Holding a cone in the lathe....
 

wrote:
I need to hold a stainless cone while I trim and bevel it in the lathe.
Any ideas on how to hold the cone?

One thought was to weld the big end to a a base plate and then use the tailstock to support the other end.


I might also turn an aluminum cone and slide it over and ecure it with ????


You can see a picture of what I'm trying to hold as the third picture down he

http://unreasonablerocket.blogspot.c.../03/parts.html

Or He

http://www.mcmaster.com/library/5/560702/44675K460l.gif


Paul


I had this problem and solved it like your 2nd thought, see 5th picture
down http://www.metal-arts.co.uk/soffietta/index.html . In my case the
brass cone fits over an aluminium cone and is held in place by the
external aluminium ring with matching taper. I also have made the same
type of item but with a much smaller included angle and held them the
same way.

Holding a cone in the lathe....
 

Turn a piece of stock about 1/4" thick to a size that is just smaller
that the id of the cone, about 1/2" deep in the cone. Center drill it.

Chuck a piece of round stock just the size of the id of the small end
centrally in the headstock chuck.
Slide the small end of the cone over it.

Push the disk into the cone from the big end.
Bring up the tailstock to push on the center drilled hole in the disk.
Check for concentricity. Maybe a tap here or there to true it up.

Where did you get the cone?

Pete Stanaitis
-----------------

Holding a cone in the lathe....
 

On Mar 10, 12:13 pm, wrote:
I need to hold a stainless cone while I trim and bevel it in the lathe.
Any ideas on how to hold the cone?

One thought was to weld the big end to a a base plate and then use the tailstock to support the other end.

I might also turn an aluminum cone and slide it over and ecure it with ????

You can see a picture of what I'm trying to hold as the third picture down he

http://unreasonablerocket.blogspot.c.../03/parts.html

Or He

http://www.mcmaster.com/library/5/560702/44675K460l.gif

Paul


Paul,

I assume you are just cleaning up the ends, or parting to length.

I would make a plug from wood, and glue it into the cone.
If you have a very good fit, superglue works. (Releases about 200 f.)
Candle wax, or low temp hot melt also possible.
Dave

Holding a cone in the lathe....
 

On Mar 10, 1:13*pm, wrote:
I need to hold a stainless cone while I trim and bevel it in the lathe.
Any ideas on how to hold the cone?

One thought was to weld the big end to a a base plate and then use the tailstock to support the other end.

I might also turn an aluminum cone and slide it over and ecure it with ????

You can see a picture of what I'm trying to hold as the third picture down he

http://unreasonablerocket.blogspot.c.../03/parts.html

Or He

http://www.mcmaster.com/library/5/560702/44675K460l.gif

Paul

What I do is make a shaft with a face and then melt some lead and make
a casting that holds both the face shaft and your part...
Do your lathe work and melt the lead to seperate the parts...
Works great with any odd shape part...

Holding a cone in the lathe....
 

wrote in message
...
I need to hold a stainless cone while I trim and bevel it in the lathe.
Any ideas on how to hold the cone?

One thought was to weld the big end to a a base plate and then use the
tailstock to support the other end.


I might also turn an aluminum cone and slide it over and ecure it with ????


You can see a picture of what I'm trying to hold as the third picture down
he

http://unreasonablerocket.blogspot.c.../03/parts.html

Or He

http://www.mcmaster.com/library/5/560702/44675K460l.gif


Paul


Can you pot it in a tin can with wax?

Holding a cone in the lathe....
 

I've done it in soft chuck jaws. And it worked great. You hold a plug in
jaws then bore the taper in the front with the larger part of taper in back
of jaws . You don't need much to hold it as it cann't pull out of jaws. Bore
taper about 1/2 inch deep with the compound and face back end as stop.. And
if you need to turn part around you can bore taper in another set of jaws
with small end in jaws, then use a soft ball or washer with a 1/2 hole thru
it and drop ball or washer into id of tapered part and use a 1/2 inch
threaded rod with a nut on end of it against ball then on other end thru to
back of spindle use a washer and nut to keep part from pulling out of jaws.
Jim


wrote in message
...
I need to hold a stainless cone while I trim and bevel it in the lathe.
Any ideas on how to hold the cone?

Holding a cone in the lathe....
 

I'd press a disk that fits into the large end onto one end of a center-
drilled shaft that fits the small end. Slip the cone over it. The
shaft will keep the disk square. The driver would be a piece of wood
on a faceplate bored to take the small end of the cone. Pressure from
the tailstock should be enough to hold everything together and allow
light cuts but slip if the sheetmetal distorts and the tool digs in.
You could increase friction with rosin or XC Ski Wax or double stick
tape in the hole.

Jim Wilkins