Hi everyone.
I followed some instructions to make Tim Lively's washtub forge. It only sort of worked though, and because I followed the instructions as closely as I could I think the problem is my technique. The rebar I am using becomes a dull red, rather than orange or yellow. It's extremely hard to move and I maybe get two to three hits out of it before it gets cold. I also notice that while the portion near the pipe is glowing, the coals on the top aren't very hot.
Some things I have tried so far:
Leaving the steel in longer (Up to 5 minutes)
Turning the crank as fast as I can
Turning the crank at a moderate pace, only as fast as it takes to hear some roaring.
Tamping down the charcoal to make sure its compact
Putting the rebar near the top
Putting the rebar right where the charcoal is glowing
Raising up the walls so that I can have more charcoal at once.
I also noticed that I missed a step, which was that the holes are supposed to be 1/4", not 1/8". I increased them just now. I haven't tried to use it since then.
Here are some Pictures of my forge. I do not normally put a brick on top, I just put it to provide a shadow. The coals were glowing when I took a picture but even with the shadow you can't see it. I am using a Zomax hand blower and Lump Charcoal.
Lastly, I have done some basic blacksmithing at my university, but we used a gas forge (which also scared the xxxx out of me). I do not have any prior experience using charcoal or any other solid fuel, but I already know that I prefer it because it is much more pleasant to work around - also I like the antiquity associated with it.
Thanks! Let me know if you need more info.