The positive connection went into an automobile lamp to control the current. Testing showed the lamp burned at 955mA or so, so that's what the power would be at. Putting the auto lamp in series with the etching tank, run a wire from the auto lamp to the brass dice piece. When power...
Once the lamp is lit and the chimney is replaced, you hold the spoon with the opium “pill” over the lamp-chimney. The heat from the flame warms the spoon, and the opium pill begins to melt and liquefy. Using the opium staff, you stir and stretch the mass as it melts, mixing it...
I have an antique brass hanging oil lamp that has been packed away for years. I came across it again when we moved but found it had not only tarnished, but turned green as well. I have tried a lot of things on the board here, but the green always comes back. Is there anything out...