kkhardwarestore - I used the Becquerel process for making dags. It takes ten times as long for exposures, but only uses Iodine. This is the (oversimplified) basic process - don't use it to try to do this, find instructions somewhere :
Start with a (silver) plate. Polish with electric buffer for ~20 minutes, starting with a buffer with rouge, buffing in each direction (horizontally, then flip 180 degrees, then flip 90 degrees). Second wheel buff without rouge. After this stage of polishing, hand-polish on a piece of velvet for 2+ minutes (this is really up to you how long to polish. This will make polishing marks finer). Then go in a darkroom and sensitize by putting in a box with iodine crystals. You can gauge sensitivity by color changes in the face of the plate. After sensitizing, place in a plate holder. You should have about two hours to take your image before the plate starts to tarnish.
With the becquerel process in broad daylight, I typically had exposures around 3 min, 15 seconds at f2.8. After exposing your image, go back in the darkroom and place the plate behind rubylith, being careful to keep the plate from rubbing against the filter. Place in direct sunlight or halogen lamp light for approximately two hours with a fan blowing on it (heat = bad, humidity = bad). Place in extremely weak fixer for approximately 30 seconds, then rinse several times in distilled water. If you want to gild it, put it on a stand (don't let it dry out!), then place gilding solution (gold cloride) on top of plate. Heat from beneath with propane torch with heat spreader until "stains" disappear (read instructions for more details). Quench in distilled water, then place back in pan of distilled water. After drying, place behind glass immediately to prevent dust contamination.
Beginning to end, this process usually took me about 5 hours per plate.