Grid Clamp (Baby Cheeseboro)
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A Baby Grid Clamp or Baby Cheeseboro is a clamp that will attach to 1-1/4" to 1-1/2" speedrail and give you a 5/8" baby pin to rig to.
Uses
These can be used as rigging points, similar to a pipe clamp. The only difference is that there are less moving pieces with a baby cheeseboro and are a bit more rigid. For this reason they should be used when a point is not meant to move at all. If a light is being hung, then a baby pipe clamp will be preferable, mostly because it is easy to pan the light even if you don't have a cotter pin in, plus you can hang the clamp on the pipe as you tighten it, while a baby cheeseboro must be hung first, then the light rigged onto it.
A baby cheeseboro is also slightly more low profile than a pipe clamp.