Turning off spindle before changing bits?

[mmak2916]

For safety reasons, is it a good practice to turn off the spindle (by turning the key) before changing bits in between cuts? I'm paranoid that the spindle will accidentally start when I'm changing bits

[Brady Watson]

Yes. This is why the key is tethered to one of the wrenches.

-B

[mmak2916]

They forgot to include the spindle key with my Desktop so the key was shipped separately. Do you have a photo of how the key looks tethered to the wrench? Did it come this way with all the Desktop models? I suppose I'll tether it myself...

[scottp55]

Here you go M.
May have changed slightly as this is the first one Gordon Fabbed(Kirk got second and got a flat key like yours).

[mmak2916]

Ahhh, got it! Thanks Scott for the photo

[Ken Sully]

I have a PRS Alpha that did not come with a key. Is there an upgrade?
I would add it

[scottp55]

Ken, When I initially asked about it(and then they fabbed it FOR FREE-Way to go Shopbot ) ,it was because I'd seen that some of the bigger machines had it and I thought it was a great feature for what we thought at the time would be the work environment.
I thought all the newer ones came with it.
Rereading, i see that Russ and John mentioned it was on "Newer", so not sure when it became a"standard feature".
http://www.talkshopbot.com/forum/sho...ndle+interlock
Call Shopbot?
scott

[adrianm]

Mines a 2009 and it came with the key interlock.

[ssflyer]

Ordered my PRSAlpha in 12/08 - no key interlock, but also no problems.

[gc3]

Yes. This is why the key is tethered to one of the wrenches.

-B

curious to ask, why is there the need to cut power to spindle during a bit change? What would cause spindle to start alone other than a software glitch?