I need to cut a slot that is 0.5" wide at the top, and 0.728" wide. and 0.086" tall. But square inside, not a dovetail. What is it called? Thanks to my knowledgeable readers: T-slot cutter. I should have recognized this from the T-slots on the mill.
Dimensions chart: What I need is throat diameter 0.5"; headspace depth .0086"; throat depth .59"; headspace width .728". The closest match seems to be .375" T-slot bolt. Still a bit deeper headspace depth than I want. Perhaps I can put a piece of aluminum .284" thick in the bottom of the headspace to make up the difference. (Probably just use a .25" thick piece as a start.) This does not have a T-nut in the headspace; I need to bolt something down from the side.
Actually building an entire finder scope bracket is looking faster than finding a T-slot cutter this oddball size. The dovetail required is 1.364" at bottom, 1.215" at top, .376" high. A little trig should tell me what angle I need to put the tilting table at to create that slope.
It turns out that strange dovetail isn't that strange. It is used on Synta and Vixen scopes, so I can buy off the shelf. Whew!
That sounds like a T-slot.
ReplyDeleteT-slot cutter? http://www.travers.com/keyway-t-slot-end-mills/c/297789/ for example
ReplyDeleteT-slot cutter, thanks. I even have one I think but not the right dimensions.
ReplyDelete