Apply two
coats, allowing each time to dry, after which immerse the metal in
a solution prepared as follows: 3 parts water, 1 part nitric acid,
1 part sulphuric acid. Allow the metal to remain in this until the
acid has eaten to a depth of 1/32 in., then remove it and clean in
a turpentine bath, using a swab and an old stiff brush. The amount
of time required to do the etching will depend upon the strength
of the liquid, as well as the depth of etching desired.
[Illustration: Watch Fob]
For coloring silver, as well as brass and copper, cover the metal
with a solution of the following: 1/2 pt. of water in which
dissolve, after breaking up, five cents worth of sulphureted
potassium. Put a teaspoonful of this into a tin with 2 qt. of
water. Polish a piece of scrap metal and dip it in the solution.
If it colors the metal red, it has the correct strength. Drying
will cause this to change to purple. Rub off the highlights,
leaving them the natural color of the metal and apply a coat of
banana-oil lacquer.
** An Austrian Top [12]
All parts of the top are of wood and they are simple to make.
Pages:
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41