Roger,
Lincoln took almost five days. That may seem like a long time , I don't know. I have nothing to compare it to with other carvers. The photo does not show the true depth, believe me, it is deep! The hardest part for me was to engrave in the deep areas without scratching up the pillars. I used a bridge quite a bit for the gravers as well as burs with a rotary tool.
I do use a bead blaster with broken down glass bead. The finish on the cameo is due to this. Often I highlight after the blast. If you want finer yet, try a soda blast.
Thanks for sharing Steve. Also thanks for the answer and pointer on bead blaster. Another question if you don't mind..... What did you mean by "using a bridge" with the graves and rotary?
Axeman,
I inserted another photo with the other two at the beginning of the thread. It shows a bridge and how I use it. It is basically a ring ( sometimes with a handle ) with grooves in it to support and slide the graver in. It acts like a fulcrum, and is really good for steep angles. I did not use this with the rotary tool, sorry I wasn't specific.