- Joined
- Apr 23, 2016
- Messages
- 99
Restoring old tools and machines is addictive! I recently picked up this Bench Top Johnson Gas Appliance Model 70B Forge from a local Craigslist with the hope of putting it back into service as a heat treating furnace. The model 70 is a scaled down version of the model 120 with the difference being the size of the actual fire box.
Some of the parts are still available from the manufacturer, but prices are extremely high. My forge is currently set up for natural gas and was configured with two forced air burners. Everything I have read about these forges is that they are fuel hogs, so I decided to convert it to more efficient hybrid propane burners.
There are several options for the burners, ranging from DIY plumbing parts to commercially manufactured Burners. I have decided to go with two of the 1/2" Shorty burners from Hybridburners.com. They have a few different models to choose from and after working with Jerod we decided that the 1/2" Shorty would give me the best combination of effectiveness and efficiency.
Here is a look at the initial teardown:
Some of the parts are still available from the manufacturer, but prices are extremely high. My forge is currently set up for natural gas and was configured with two forced air burners. Everything I have read about these forges is that they are fuel hogs, so I decided to convert it to more efficient hybrid propane burners.
There are several options for the burners, ranging from DIY plumbing parts to commercially manufactured Burners. I have decided to go with two of the 1/2" Shorty burners from Hybridburners.com. They have a few different models to choose from and after working with Jerod we decided that the 1/2" Shorty would give me the best combination of effectiveness and efficiency.
Here is a look at the initial teardown: