Closed Bearing Block for 1" round unsupported rail

This is a closed bearing block for a 1" round, unsupported rail. It is a variant of my open bearing block inspired by WWWektor's contribution. The closed version was created to minimize the springy nature of the open block under the greater pressure of aluminum cutting.
I have not tested this bearing block yet. I will report the performance when I do.

I will be re-working my open bearing block (for a fully supported 3/4" rail) and will upload that model when it is ready for testing.

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