[TheForge] flypress

Thu Sep 25 02:10:01 2003

David,
Thanks for the info.
The difference in the screw was my understanding as well. How much
difference does the extra travel of a flypress make in the use of tooling? A
3 start 3tpi (as on a flypress) will move the ram 1" per rev of handwheel. A
single start will move it 1/3 of an inch. If a full turn of a screwpress
goes 1/3inch, that would push a punch or splitter nicely .Is that too much
effort for using tooling?There aren't many times when 1/3 in. movement in
one stroke  is obtained thru other means. I have seen the pictures of guys
forging tenons with a flypress.  I am not as interested in forging with a
press, more interested in quiet use of tooling. Can somone comment based on
their experience?
Thanks,
Bob

----- Original Message -----
From: "David E. Smucker" <[email protected]>
To: <[email protected]>
Sent: Wednesday, September 24, 2003 6:21 AM
Subject: Re: [TheForge] flypress

> One major difference is the screws.  Most screw presses or tryout presses
> used in a die shop are built with a single tread on the screw (screw tread
> starts at on point.)  This is slower acting but produces high force or
> tonnage.  The flypress now being sold for blacksmithing have  mutli tread
> screws.  Some up to four treads starting at the same point.  They have 4
> time the lead for the same pitch of thread.  This means that the screw
> advances 4 times as fast as a single screw.  Still a lot of force but not
as
> much as a single tread -- but 4 times the speed.  Said to be "better" for
> forging.  Really depends on what you are doing.
>
> Dave Smucker
> ----- Original Message -----
> From: "Bob Smolen" <[email protected]>
> To: <[email protected]>
> Sent: Tuesday, September 23, 2003 10:39 PM
> Subject: [TheForge] flypress
>
>
> > Can someone explain the difference between  the popular flypress used by
> > blacksmiths and the screw press or tryout press used in die shops. How
are
> > they different?
> > Thanks,
> > Bob
> >
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