So I want to make myself a forge but I do not want to use electricity...I have the basic forge design but I need a way of adding air, I tried using a coke bottle with the bottom cut off and then plunging it into water and connecting a tube from the top of the bottle to my forge but it wasn't powerful enough!
Preferably I do not want to use a hand or foot pump but want to make my own contraption for adding air!
I've seen the forge that Dave Budd uses and tried to replicate it with a plastic bag instead of leather but that didn't work out
Any help would be appreciated!
Also a while back there was a thread with a link to a free pdf about getting into blacksmithing and it had some great mechanisms that you could make to add air...if anyone could link the I would be very thankful!
Preferably I do not want to use a hand or foot pump but want to make my own contraption for adding air!
I've seen the forge that Dave Budd uses and tried to replicate it with a plastic bag instead of leather but that didn't work out

Any help would be appreciated!
Also a while back there was a thread with a link to a free pdf about getting into blacksmithing and it had some great mechanisms that you could make to add air...if anyone could link the I would be very thankful!