I wanna try making my own blades, but can't seem to find steel barstock in the dimensions I want.  I'm looking to make a zombie-chopper, which requires it to be wide (3"-6"), long (28"- 36"), and heavy (3/16"-1/4" thick).  I want it to have a large belly with a heavy, axe-like tip, so I'm hoping to get it around 6" wide so I can get the curve I want.

I want a few bars so I can MAYBE have a finished product by the third try.

NOBODY seems to have what I want online.  Where can I go to get barstock in this dimension range?

I get all of mine, here.  I use the Timken-Latrobe (Koncor) steel.  Precision-Marshall is also excellent.  However, there are always slight differences among suppliers.  My heat treatment is directed at the Timken product.  I use mostly O1 these days.

Admiral Steel should be able to help you out.  They offer about a dozen different selections including the usual stainless, tool steel, titanium alloys, and their own damascus patterns.

If you send them a drawing of your idea, they can laser cut it onto the steel.   At around $100 for the steel, it might be cheaper to 'get it right' the first time.  You'd only have to grind, temper, sharpen, and clad the knife.

www.admiralsteel.com/products/blades.html