Took delivery on a double barrel tumbler from Harbor Frieght, on Monday.
Today I tumbled a around a lb or more of pennies and another with q, d, and n.
After 2 hours, I removed the coins. They were very clean, and could read the dates and all appear spendable.
The pennies were all very brown or copper colored looking. The others are a shade of greenish brown. Some have an almost yellow tint.
Here was my formula :
Dash of salt, drop of DW liquid, spoonful vinegar, splash of ammonia, some rough non colored aquarium rocks. Covered with water just above rocks. Little less than 3 lbs in both.
Uncovered both barrels after 10 min to release gas or air.
The aquarium rocks are brownish, so I figured these are unpainted rocks. Maybe the rocks are painted this color to appear natural. I don't know. There was nothing written on the bag otherwise.
What do you guys think?
And why do you think the q, d, and n, turned greenish?