I needed to make some holes in some Chimeras to accept the
SM turret for a Hydra conversion. I asked a machinist at my place of work and he offered up some time on a CNC machine. I expected them to come out much better then I could manage with a drill and vice at home, but I didn't think they would look this clean.
Before
IMG_1340 by
spireland, on Flickr
After
IMG_1343 by
spireland, on Flickr
IMG_1344 by
spireland, on Flickr
The best part was how the lip was preserved. Looks like it was cast that way.