Originally Posted by
mxtras
First - you want hard stops. They may never get used but the first time you have a failure that drives your gantry off the rails, you will wish you had tried to put somthing in place......Put some hard stops in place.
Scott
Allow me to give a slight correction/modification; you need some soft hard stops. If you stop something over a distance of 0.5 inches with a rubber bumper all the components see a lot less stress than if so stop something over 0.05" with a solid stop.
If you have steppers I think that is all you need; a stepper does not mind being stalled.
If you have servoes you need overcurrent protection.
An open mind is a virtue...so long as all the common sense has not leaked out.