Where to buy from sound and led 1/2" shank or ER25 edge finder, ?

[magicniner]

How about this?
I bought the UK one above and made a push-fit ball adapter.
I used 01 Tool Steel for the sleeve, a 6mm Stainless Ball Bearing for the ball, a bit of spring wire I had laying around for the spring and spring retaining pin.
The spring is soldered to the bearing, I used a big old fashioned flame heated 1lb copper soldering iron and Killed Spirits for flux. Cleaning the excess solder off with a file doesn't touch the bearing and a quick polish on a coarse wheel cleans off any residual surface solder.
I've made the spring a little strong but it will do for now and the main bit is that it works rather well and I'm not scared of hitting the work with it ;-)

- Nick

[Boyan Silyavski]

Now thats what we are talking about! Great idea!

[Lee Roberts]

How about this?
I bought the UK one above and made a push-fit ball adapter.
I used 01 Tool Steel for the sleeve, a 6mm Stainless Ball Bearing for the ball, a bit of spring wire I had laying around for the spring and spring retaining pin.
The spring is soldered to the bearing, I used a big old fashioned flame heated 1lb copper soldering iron and Killed Spirits for flux. Cleaning the excess solder off with a file doesn't touch the bearing and a quick polish on a coarse wheel cleans off any residual surface solder.
I've made the spring a little strong but it will do for now and the main bit is that it works rather well and I'm not scared of hitting the work with it ;-)

- Nick

Sorry for being dumb...but what's the benefits of having the ball on the end?

.Me

[magicniner]

The cheap ones are solid and don't have much flexibility at the tip so for me the advantage is that when I've snuck it up on the work edge until the light just comes on and then set the DRO appropriately in Mach3 the ball just moves over on it's spring when some klutz hits the wrong button and tries to plough it through the work, then the ball simply pops back when I correct my error.
Don't put your tongue on the end BTW, there's 2 12v batteries in series inside mine! ;-)

- Nick