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I have used the Emachine shop program for all three of my scopes as well as laser cutting. This freeware also comes with tutorials that makes it easy to use.
Laser cutting can do quite small intricate shapes but the black needs to be sanded off the edges. Also, the entry side of he laser is a tiny bit wider than the exit side too. About 0.2 of a mm. So some important edges had to be sanded square.
Some other form of cutting may not have these issues but I haven't used them.
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