[nitewatchman]

An Edge Finder will not survive the spindle running at 5140 rpms.

Just in case anyone is wondering.

nitewatchman

[TXFred]

My Starrett handled it OK. But 7500 RPM was too much for it.

Luckily, it was an enclosed mill.

[Steve Seebold]

An Edge Finder will not survive the spindle running at 5140 rpms.

Just in case anyone is wondering.

nitewatchman

I take it you're speaking from experience.

[nitewatchman]

Yep,

Bottom end spun out, went perpendicular to the barrel and then shot off. Counted the ricochets and found it the base of the second wall.

Rebent the spring ends and put it back together and it seems none the worse for the suborbital flight.

Reinforces the importance of safety glasses.

nitewatchman

[BIG IGG]

indicators don't hold you either LOL

[BRIANJiowa]

Haha....I've always worried about one flying across the room on me. Thank God its never happened. I was always told 1000 RPM, but I notice the faster you spin it the easier it is to see. What does everyone else use for a spindle speed?

[Steve Seebold]

I always use 1,500 RPM

[MichaelHenry]

Be glad it wasn't a Haimer...

Mike

[Don Clement]

I use 1K rpm. It's really not higher rpm that works best for me in using an edge finder. The real trick to detecting the earliest edge finder "kickout” is to sight along axis of movement so edge finder kickout is seen perpendicular to one’s line of sight just as it touches the edge. If one not is sighting along the axis of movement then the kickout takes place in the direction of sight which is not as evident as perpendicular to one’s line of sight .

Don

[Steve Seebold]

Here's my edge finder. I like it because I never have to turn the spindle on.

[underthetire]

~1200 to 1400 rpm. They get less accurate then they already are past that.

[nitewatchman]

Normally, I will use about 1000rpm. The 5140 was a "brain fart".

nitewatchman

[Don Clement]

Here's my edge finder. I like it because I never have to turn the spindle on.

I find the cylindrical probe of the old type Starrett edge finder useful for things like finding datums when using spherical tooling balls or finding the edge of roll pins that I use. The spherical tip used on those 3D edge finders doesn’t work for me in the above applications.

Don

[Boss&Sons LLC]

I used to always spin them at 2000 rpm. (I buy .2 diameter tipped with 3/8" shank Starrett edgefinders)
I spoke with at Starrett rep sometime ago and he said they don't recommend anything above 1000 rpm so I now do as he suggested.

[pejaer]

I've found more success with watching the edgefinder perpendicular to the movement and then, instead of looking for the kickout, I put a small flashlight behind the edgefinder and watch for the light to disappear...tedious, but it seems more accurate than kickout which, IMO, goes just too far into the part before kicking....and then reverting back it won't "return" at the same point. Could be my cheapo edgefinder...anyone use the flashlight method?

[UUU]

I run a Huffam edgefinder at 500 rpm - just following the instructions. The kickout method works for me - I'm not going to stick my head in the cabinet to look down the x-axis while the spindle is running.

[WOTDesigns]

Here's my edge finder. I like it because I never have to turn the spindle on.

Love mine... glad I haven't tested it st 5400 rpm yet

Just wish I could get the tips locally... and cheaper.