Concrete mounted 1/4" tube bearing.
Problem:
Using a 1/4-20 SS screw as a hinge pin for a plywood hurricane shutter,
what can I use beyond a 1/4" hole in a concrete block?
It needs to rotate 90* max.
Would a 1/4" lag shield provide a sturdy 'bearing' surface for a
machine screw?
Any other ideas for inserting a tube bearing into a concrete block?
|