Just Another Bend

We make bends. We make helices, U bends, offset snake bends and all in between. This week we had a challenge. We were to make a large diameter 6.525" ID Bend on a 69" Radius with a tolerance of +-0.5Deg, 8" tangents, and maintain roundness to.070" out of round.  Here is the result. You can see, toward the middle of the bend, a fabcard with 16 point-of-reference checks.

This clear-transparent butyrate tube will be used in a vacuum system.