Etching dichroic fusing glass can be easily done at home with etching cream or by the use of a small engraving tool to remove areas of the dichroic coating.
Dichroic glass is sold in a wide range of colors and patterns, rippled and dimpled dichroic are not really suited for etching, you need flat dichroic on a black base for the best results.
Ensure that the dichroic and other fusing glasses you are working with are the same COE.
Armour Etch Cream is a popular etching cream that works very well on dichroic fusing glass. It is applied over a stencil, masked off area or outlined drawing. A pattern can be formed on the glass by the use of stencils, masking tape, marking pens such as Sharpee or Stadetler.