<< Yes, basically...your assumption is mostly correct. The basic process is as
 follows: A Dichromate is added to an emulsion. I use a polymer / acrylic
 based emulsion sold in crafts and screen print supply stores. I then add
 dry glaze to the mixture and stir until blended. 
Can I use regular gum as in gum printing?
>> WARNING: If you fire the piece yourself, make sure the kiln vents outside.
 The dichromate fumes given off can cause problems.
  >>
No, I am not firing the piece myself. Is there anything I should inform the
craft store?
TIA!
Dave