[cjchands]

Choosing Limit Switch? How to? Please advice

I have been listening to couple post in regard to choosing limit switch that will be use with mini mill X2, obviously I got different opinions how you would pick either NC or NO. But what I don't see in the discussion is how what brand or where people recommend to get for the limit switch.
I have seen many types of limit sw: BUTTON, LEVER, ROLLER and they come into different price and spec.
I am a total newbie here, and would like recommendation of where and what type (NC) that experience users are using.
Doesn't have to be super precise, but don't want crappy one either.
Thank you very much.
Appreciate it.
JEff

[S_J_H]

It depends on your intentions. If it 's just a hobby mill and you'll be doing single setup operations then any old micro snap switch will do.
You'll simply home the machine at startup and then you are good to go.You have your machine zero reference. The accuracy of the switch is meaningless once you have established home or machine zero for single setup operations.

Then you can go and setup your part where you want on the table and zero out the axis and machine away.
Now if you are going to be using a lot of fixture offsets for example you need your switches to be good and accurate to keep positioning correct.
So then you'll want a much more accurate switch setup.

On my x2 I never even bothered with home or limit switches. Just used mach3 soft limits. But it was sort of a PITA doing that.
You want you switches NC. So for example a wire comes loose and creates an open circuit and will set off the limit. With NO when a wire or connection is at fault , then you won't find out until the table crashes. Not good.

Steve

[cjchands]

Thanks a lot, appreciate it.