I have the Knew Concept Saw, and can recommend it. For sawing the
thick sheet that you are talking about, it can save a lot of effort.
When I hand-saw, my hand that is holding the metal down can get very
tired. The Knew Concept Saw has a hold-down foot, so that you only
need to guide the metal. It saws absolutely vertically and
regularly, so that the quality of the cut is superior—(that is,
unless you tilt the table, which I do when I make a cutting die).
There can be a bit of a learning curve if you have been sawing with
a jeweler’s saw for a while—you need to let go of your prior
experience, and get into the Zen of using the machine. Newbies catch
on right away! I realized this when I saw Lee Marshall put safety
glasses on a 7 year old boy, who sat down and sawed for half an hour
without breaking a blade.
The speed has been calculated to keep the saw blade sawing
efficiently, without overheating, so that each blade lasts longer.
There is a piece of felt on the bottom of the bench pin–you put a
few drops of oil on this, and the blade is constantly lubricated.
I think the Knew Concept Saw is perfect for the project you have in