[TheForge] Guesstamating/calculating

[Larry]

Thanks Brian, it you find it I would like to see it.  This is
closer to what I was thinking, though Bruce may have given me the
same thing, and I just don't know it.  :-)

Larry

Brian Hall wrote:

> on bars where the final length is critical, I use a
> formula I got from a forestry textbook (it may be the
> one for truncated cones), it involves plugging the
> area of the wide part, the narrow part, and the
> desired length. The formula yields volume (such as
> cubic inches) then I just figure how much parent stock
> yields that volume.
>
> I don't have the formula right now but I can post it
> if anyone is interested.
>
> Brian
>
> --- Larry <bdragon@attglobal.net> wrote:
> > Is there a rule of thumb to use when drawing steel
> > as to how much to start with?  For
> > instance, say I wish at draw out a taper on a piece
> > of 1 inch round bar to 1/2 inch and wish
> > the taper to be 6 inches long.  How much stock
> > should I start with?   This is assuming I wish
> > to make more than one, or have two ends of the same
> > stock tapered equally.
> >
> >
> > Larry