[PSUBS-MAILIST] MBT vent tube

[Sean T. Stevenson via Personal_Submersibles]

The other way I have seen this done is to fabricate a custom round end mandrel out of wood where the round is cut with a router on a circle jig, and then the correct radius matching the tube OD is cut into the cylindrical face of the mandrel using the router with a bull nose bit. Essentially building a tube bender but with large bend radius.

Sean

-------- Original Message --------
On Apr. 17, 2020, 18:49, Rick Patton via Personal_Submersibles wrote:

> Well I fabricated a jig on my fab table using 3/16” X 1 1/2” flat bar, packed the 1” SS tube with sand, welded ends on it, said a few prayers and went for it. I first tried cold bending it but needed a much stronger jig for that so I pulled out my rose bud and hot bent it and it worked great! Now I have a lot of buffing to do to make it look pretty again.
> Rick
>
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