Stu,
That is not a bad little forge, and the micro-forge I was talking about is even easier, but the mini-forge on Zoeller's page looks pretty good (probably the best I've seen) with a 1 lb. mapp tank.
(linky pic - I used one like this little firebrick, it heat up 1/4" square stock no prob)
Most of these micro and mini forges are more than enough to do edge tools, as you might be interested in. Those mapp tanks will get expensive though, I have to pay $6/lb at Home Depot. They are convenient for a very portable solution for small stock, and if you have ether propane or mapp, either 1 lb. tank will work. You can get propane for $10-$12 for 20 lb. if you have a tank. Storage and size, the nod goes to the 1 lb. tanks.
Then you can see bunches of burners available on Zoeller's site, Ron Reil's site, and Rex-Price's site. I decided to go with the Rex Price T-Rex burner, which has a 45 day backorder...but it seems like money well spent in the sense it can be used on various forges, and will take a 20/lb propane tank and providing a good solid forge.
I really think Ron Reil's freon tank mini-forge is what I want to build.
Any type of can, pipe, freon tank, propane tank, etc...will work. It's the kao wool that provides most of the containment.
Even Zoeller's mini-forge with the 1 lb. tank (mapp will get it hotter) is pretty capable and could certainly forge any type of chisel or draw knife, scorp, adze, plane blades, hammers, etc...just fine. You also wouldn't need too big of an anvil and could use a railroad rail section (gotta be some of that in Japan, if you could find it...there's certainly enough trains...;-). You could probably even buy some type of ASO, like a Grizzly, Harbor Freight, other, that are made in China, some are made in Europe, probably some in the states also. Maybe you have an anvil already, but you'll need something to hit on.
One last thing I just wanted to mention, is that it's very difficult to forge anything once you start shaping it. IOW, if you want to bend a draw knife, you will need to be able to fit that section in the forge if you want to continue forging. Some things you can bend and be done with it, if you get it right. I used a micro-forge that was so small, once the 1/4" square stock was bent, it wouldn't fit back in. It was a one shot bend. This is why larger and more open forges are desirable. However, for lots of small hand tools, you don't need that.
For more info, check out
You might even see Jr. Strasil over there!