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Thread: Expanding Mandrel for turning large tubes

Dec 29, 2021, 11:06 PM #6

Frank S

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I Like it. I made a set of internal collets a long time ago to allow me to bore the Id and sometimes thread the ID of long hydraulic cylinder tubing on a relatively short lathe. To do this I used these ranging from 2 1/2" through 5"
click on picture for clearer view the grub screws allowed for tightening to the ID of the tube while serving as an internal 4 jaw

Never try to tell me it can't be done
When I have to paint I use KBS products

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The Following 7 Users Say Thank You to Frank S For This Useful Post:

Christophe Mineau (Jan 1, 2022), DIYSwede (Dec 30, 2021), johncg (Dec 31, 2021), Jon (Dec 30, 2021), neilg4dbn (Dec 31, 2021), suther51 (Dec 30, 2021), Toolmaker51 (Dec 29, 2021)