Step 10: FAQ
How big/small of an object can I do?
- My browsing around on the web found people doing anything from small parts in a 1/2 gallon tub to a trailer body in a swimming pool using a large welder for the power.
Does the solution "wear out"?
- No - it just gets nasty
How much power should I use?
- As little as possible to still get the job done. I think you will get better results with low power and two days of processing than high power and getting it done in an hour. The larger the object (surface area) the more power required to do it in a given amount of time. My charger is 1.5 amp 6 volt and works great for hand tools. the small stuff takes a few hours. The larger complex plane took a day and a half before i was happy with the amount of removal.
Is this dangerous?
- Only if you don’t have any common sense and don’t use a GFCI protected power source.
- Yes if you do it inside - the bubbles forming are evidently hydrogen which is flammable. Outside it does not cause any problems.
- The low voltage is pretty safe - especially if your charger has an automatic cut off "trouble" switch.
Are there any drawbacks to this system?
- Some people say that depending on the power and time involved, the steel can become brittle due to a temporary change in structure. This is cured by "baking" the tool for a few hours at 350 in the oven or letting it sit around for a few months before any hard use. see the links below for more info. I have not found this to be a problem.
These guys deserve the credit for teaching me how to do this and provide way more info on this system: