Turning Archive 2006

Subject:
Marks from Vacuum Chucking

George Van in WI
>I have just started using my Vacuum system. I got the Oneway 6 vacuum drum for my first and main one before I try to make the others. It came with a neoprene pad for the seal. I am using a Robinair vacuum pump. Most of the bowls I have mounted with this system have a ring on the inside from the chuck; I do not see the ring on the outside. Have others had this problem or is it unique to my system? My gauge is showing I am pulling 20 vacuum.

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