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How to make corscrew spirals?

lithoman

Aluminum
Joined
Aug 14, 2012
Location
San Diego, CA
Does anybody out there have a method for
fabricating corkscrew spirals? Something
similar to the image attached. I currently make bottle
openers (image attached) and someone said "wine is big
these days, why don't you make corkscrews"?
I'd just buy them in bulk if I could locate a source and they were
reasonably priced, but I haven't had much luck with that.

I have an old, (circa 1929) 9" SB junior with a full
set of change gears.


Thank for any help or advice,
Dave
 

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In the wire biz the material is feed against a ramp tool that deflects the wire material at a angle to give the required helix. If you look at U tube you can see examples of this. For a regular guy I bet winding is the easiest answer.

Many years ago I almost sold everything and got in the spring business. I really like springs and wireforms
 
Suggestion: Really good cork screws have the tip or starting end in line with the centerline of the helix. The one in the picture does not meet this specification.

If you make your own, form the tip to be on the centerline.
 
Thanks to all for your input, especially car2.

While I don't have all that fancy stuff, I got pretty good results
by fabricating a wire feeder to mount on the cross slide, gearing the
lathe to cut a 4 TPI thread and winding SS welding rod around
a 1/8" drill bit. Had a little trouble with the drill bit deforming but
a following steady rest solved that.
Once I had everything set up I could wind a worm in less than
a minute.

My only problem was I made a left handed corkscrew.
Oh well, that's a minor detail that I know how to correct.
Just have to feed the other way.

As far as the larger dia. for mounting to a handle, I drilled
some 1/4" SS rod and brazed the corkscrew into it.

Next question:

Any advise on heat treating these after I make them?
The first two I did seem to be a little softer than I'd like.
I gave them out to some wine drinking friends for beta
testing. We'll see how well they hold up to regular use.

Anyhow, Thanks again
 
In my experience the best quality antique corkscrews were often French and these were machined like worm from the solid, this is a spiral milling operation and can be done on a centre lathe with screwcutting and a secondary spindle with an end mill all mounted on the compound slide, make from drill rod and heat treat.
This will give a top quality job.
 








 
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