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Knowledge You Can Build On — Est. 1998

goblet question

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goblet question

#1

goblet question

ken chase

>My two attempts to turn a goblet ended with broken stems. In one the stem was quite thick. Would it be better to try and turn the hollow end first then go back and turn the stem?

Thanks

Ken Chase

Re: goblet question

#2

yep

tdaniel

>

Re: goblet question

#3

Re: goblet question

John Lucas

>ken

I turn the outside of the goblet bowl first leaving the bottom part thick. I don't turn the stem at all. Then I hollow the goblet. Then I go back and finish turning the bowl part. Then turn the stem and top side of the base. Then I use a parting tool and the toe of the skew to turn the base.

Re: goblet question

#4

Re: goblet question

Pete in Holland, MI

>Turned a few goblets in the past. Lost a few when the lathe was turned on, the goblet on its slender stem went out of round, and airborn it went within a few revolutions. Ended up first drilling out the majority of the "socket" with a forstner bit, finishing the inside, then start turning the outside. Made a stepped plug that fits the interior lip of the socket and held the top end of the goblet steady with the tail stock, but only with a light pressure. Too much tail stock pressure will flex the stem. Was able to finish the stem, then part off till about a 1/4" connection to the stub, sand the underside of the base with sand paper on a stick, then finish parting it off. Have made a couple this way with 5/16"dia x 6" stems.

Good luck !

Re: goblet question

#5

Re: goblet question

Ron in Drums PA

>I hollow the bowl first then rough the outside next. Then I fine tune the inside then the outside of the bowl. At this point I sand and finish the bowl. I have a big cone live center the I move into the bowl I use paper towel so not to mar the finish. Now I start on the stem and base


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Re: goblet question

#6

One other thing

Ron in Drums PA

>Once I start on the stem I don't stop the lathe until I'm finish. I've broken some thin stems just by turning on the lathe.

Re: goblet question

#7

Re: One other thing

Fred in NC

>Good point! Of course, with a VS one could slow down the lathe to a stop, and then start at the slowest speed and ramp up.

Re: goblet question

#8

Re: One other thing

tom libby

>Plus by the time you go away for a couple minutes, the thing is already a little out of round, putting more stress on the stem when you come back.

Tom

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