Kobra users: how do you clean up the inside of hollow forms?
I had my first go with the Kobra last night, wondering how most of you deal with the ridges left by the small cutter? Even with the laser, I find it difficult to get a smooth surface in areas I can't see easily, beyond the first inch or so of the neck of the form. I know they make a scraper, but only for the largest boring bar, which it seems would necessitate a fairly large hole in a smaller form. I tried to use a Monster bar with scraper, but the flat spot for the set screws is in a different location so it won't work (set screws catch the corner of the flat)
I suppose another question might be how smooth (even) does the inside of a form need to be? I would like to have it feel even at least as far as prying fingers might explore. Thanks.