The wax was removed via steam cleaning and the molds were dried in the sun over a period of two weeks with fans also on them. These need NOT have the chemical water removed. Steering was done by welding a pipe to the steering column and the unit was run from behind by pulling a rope that went to the starter and was steered by the pipe unit out the back of the table. It later became a tent platform that my son lived on for over a year and a half when he came of age and was supposed to either leave the house, go to college or pay rent. I was a good heavy duty table.
New machines are available for metalizing that work on an electric arc principle.
They are very expensive. I live near Ventura, Calif. and found a small oil field service company that used metalizing for rebuilding drilling shafts in oil fields. I was lucky, and they agreed to metalize some of my sculptings. I had one shot in both copper and brass. The initial surface is very rough and it requires knocking down the rough texture, and then polishing.