Re: New Lighting Blog Series: Types of Units
Very rarely {i.e. never} have I seen a C-clamp with out some sort of saftey mechanism on the shaft. If you find one in your inventory it should be replaced immediatly. One should not make it into the air because its a defective C-clamp at that point.
In the past 15 years I've never had an issue with a grooved shaft affecting focus whether I was the electrician or the designer.
For every reason not to use the pan bolt theres a reason not to use the yoke bolt.
Yes, if your space has clamps with shafts that DO NOT have a safety lip to prevent it from free-falling when loosened, I strongly suggest getting them replaced.
Very rarely {i.e. never} have I seen a C-clamp with out some sort of saftey mechanism on the shaft. If you find one in your inventory it should be replaced immediatly. One should not make it into the air because its a defective C-clamp at that point.
Breaking the head off a pan nut is an excuse IMHO. When you focus using the yoke bolt you run into the same issue that Gern's broken shafts create. Too often electricians don't tighten them down properly and they can work their way loose.Okay, I strongly discourage my techs from panning the unit with the set screw. It is too easy to break the head off, it is very easy to pull all the way out and strip it putting it back in, it is easy to create grooves in the shaft which effect focus, sometimes it takes too long to het a wrench on it when you can do a yoke bolt focus with just your hands, eventually the bolt will not tighten fully anymore.
There is a laundry list of reason not use it for focus.
In the past 15 years I've never had an issue with a grooved shaft affecting focus whether I was the electrician or the designer.
For every reason not to use the pan bolt theres a reason not to use the yoke bolt.