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Search the words "keyhole slot". We discussed this in 2008.
You simply use the connected line , draw line,return to beginning of line , stop. Use 3/8" bit in designer , use keyhole bit in...

The CW should know where it has carved and leave tabs accordingly, unless you do the back and front as seperate programs.
later Daniel

I don't have a any programs like Corel, but I would think you could do the feathering and roundover in them using the carving bit.
later Daniel

You can do concave feather by making another outline of your carve region and applying a roundnose bit to the same depth as your carve region.
As for a convex , use the round OVER bit set to the...

Al
Two things. I have a remote contol on mt dust collector, about $70.00 or they have dust collector controls that work with low voltage made for hooking up blast gates, then when the blast gate...

Jeff
You can countersink a hole simply by placing one hole on top of another, one to drill the hole , the other with a v-bit to countersink.
This is similar to what I did in the step stool...