I am routing out some small panels in 1/4 aluminum. I have tried two techniques and I am not thrilled with either. One is to route as close as you can to the bottom without breaking through, say for example .247, leaving a thin layer to hold the part in place, then break it out with a tool afterwards.
The other is to cut through, and hope for the best, but usually the part gets dinged beyond repair by the tool when the part flops around.
There has to be a better way than what I am doing. Somebody educate me on breaking out parts.