Jean, and all interested!
why was the original 20-ton bd discontinued? i don't understand
the difference between it and the deep-draw. why a 12-ton instead
of producing the 20-ton original? what would i not be able to do
with the 12 that icould have done with the 20 original? as you see,
i don't have much experience with hydraulic presses.
The original 20 ton Bonny Doon was discontinued due to the arrival
of the 20 ton tall. The 20 ton tall was designed to provide the
capacity needed for deep-drawing ring stock and cup-sized vessels.
Once the 20 ton tall was made available everyone preferred the new
press and the original was discontinued.
A couple years later we redesigned the 20 ton tall to be much more
rigid, thereby making it more safe and efficient. The new re
engineered 20 ton tall is called the MKIII.
All of these upgrades, along with the drastic increases in the costs
of steel, fuel, and labor, resulted in the price increase.
That said, if you compare your dollar's 2007 purchasing power with
what your dollar could purchase back in the early 90's (when the
original press was $695), you'll see that the price of a new MKIII
is effectively less than what it was 15 years ago in adjusted dollar
Now we have developed a 12 ton press at the original price of $695.
It's first purpose was to replace the screw press (which was
designed for blanking and only exerts a fraction of a ton). It is
capable of blanking, forming with formboxes, utilizing mushroom
formers with contained urethane, and light embossing. If you want to
do deep-draw or heavy embossing it is not the best choice. It is
meant to be an 'entry-level' press with most of the tooling
capabilities of the MKIII. It will not be compatible with the new
synclastic bracelet dies, but you will be able to use the
anticlastic die set.
We designed this new Bonny Doon Lite with lots of feedback from
instructors who find that a lot of people are perfectly happy with
The Bonny Doon Lite is built from high-tensile strength steel and
aluminum. We could have kept the costs down by using low tensile
strength metals but then we would be lowering our standards and
competing with the distributors of low grade tools made with
overseas sweatshop labor. You should also know that we use 100%
renewable energy here at the shop where we build Bonny Doon tools.
Renewable energy is more costly than non-renewable energy, but it's
the right thing to do.
Before buying any press I would highly recommend you take a workshop
or two. Education is the most important tool you'll ever buy. There
are many great instructors teaching hydraulic forming including
Cynthia Eid, David Anderson, Anne Hollerbach and David Reynolds.