Thread: The things I buy II!

With that title and your previous purchasing history, I imagined we would be viewing more gynaecological apparatus.

BT

Hi Stuart,
It looks like a Titan 70 series scope for checking surface grinding.

Phil

Hi BT,
You dont think two is enough of those? I'll have to keep an eye out.

Hi Phil,
You're on the money. 70 Series Measuring Microscope


I'm thinking I was wrong about the calibrating by moving the top piece, I now think there should just be something in there so you can rotate it and have it stay and not rattle.

Stuart

Are you on your exotic buy ups again Stuart, LOL

How does that edge finder work? Do you slip a smoke paper in between them or something like that.

Dave

Hi Dave,
lol If I see something cheap enough I buy it and worry about how it works afterwards. In fact the center thingy cost more than the scope. Yes the flat face is said to be accurately on the centerline but I'm yet to check that.

Stuart

There's a chance you've been touched Stu. Looks like your good old garden variety shelf support pin.

If that's the case Bob, I now have hundreds of edge finders.

Phil

Well at least I have another use for it if it sits in the back of the draw for to long lol

Stuart

I think there should be a thin C-ring (something shaped like a thin bush with a spit in it) in the eye piece groove.
You could make one out of a stip of brass shim stock a gnat's whisker thinner than the groove is deep and narrower than the groove is wide. Roll it around some round stock a bit smaller than the bottom groove diameter (experiment with the flex/springiness until you get it to stay just a little bigger in diameter than the bore the eye piece fits into. They used some kind of greade on these fittings - probably vaseline. Just slide it over the eye piece and compress it into the groove when sliding on. That should hold it there without rattling and stay there when you move it up and down.
Joe

Hi Joe,
I'd been thinking about the C-ring myself but as there are a lot of fibers inside the tub I was wondering if it might have had felt in the groove. After your comments I figured I'd give it a go. As luck would have it the one piece of brass shim I have seems to be just the right thickness. I haven't used any vaseline on it as yet but its just tight enough that if you are very careful you can pick the whole thing up by the eyepiece, which is more than good enough. I'm just happy it wont fall out if tipped on its side. It still rotates easily.

Stuart

G'Day Stuart,
I have a similar edge finder, it's a bit rough and ready for milling setups, but not bad as a lathe tool height gauge.
Regards,
Martin

Hi Martin,
Thanks I'll have to give it a go.

Stuart