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21052 Detail view
Don Wattenhofer

21052 Detail view

Notice the crack in the stub verses the lack of cracks in the undercut base.
I can’t believe it hasn’t cracked or broke yet. With the Center of the tree being the Center of the cup stem. For strength usually you see the pith off Center in a thin goblet. Nice piece though!
 
Nice piece, Don.......Just wondering......do you have any ideas, theories, guesses, as to why the goblet didn't crack, while the waste piece did?

-----odie-----
I’m going to say it is the mass of the piece of wood. The small thin goblet has had room to flex. Will it last through a winter and summer, possibly not. But you never know.
 
Nice piece, Don.......Just wondering......do you have any ideas, theories, guesses, as to why the goblet didn't crack, while the waste piece did?

-----odie-----
The walls of both the cup and the base must be uniformly thin so that they can warp/flex instead of cracking. The cup portion on this one is cut to between .03" to .04" from just under the bark edge down to about .5" diameter at the center where it blends into the stem. The base is also cut to a similar uniform thickness as you can see in the detail post. The pith on this one was almost dead center in the stem and there is a small crack on the stem that maybe a .005" feeler gauge would fit tight into.
The question if it will last through a seasonal change is that from previous experience I think it will.
 

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Don Wattenhofer
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SONY ILCE-6000
Aperture
ƒ/5.6
Focal length
50.0 mm
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1/160 second(s)
ISO
640
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21052GobletD.JPG
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Date taken
Wed, 30 June 2021 8:46 PM
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3492px x 2184px

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