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safe finish (Read 1,006 times)
 
Ed Weber
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Re: safe finish
Reply #15 - Mar 28th, 2017 at 9:37am
 
I only want to clarify so that everyone gets the results they desire

John Cepko wrote on Mar 25th, 2017 at 5:01pm:
The description of the tea and coffee cups I looked at in the above link stated the items were finished with either lacquer, or poly.

The link was just one result in a general search containing thousands.
This is a 21st century "knock-off" of a traditional cup. Polyurethane wasn't invented until the 1930's.

David Schuelke wrote on Mar 25th, 2017 at 5:15pm:
Sakura is actually a cherry tree, I have some local cherry, will give that a try, I think I will give it a tung oil finish,

Sakura is not the wood species, Sakura is a Japanese term for the blossom of the cherry tree.
The wood is Prunus serrulata, which is only one specific type of wood that has been used for tea cups. It also doesn't mean that any species of flowering cherry tree will work for the same purpose.


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Don French
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Re: safe finish
Reply #16 - Mar 28th, 2017 at 12:02pm
 
I read the Chinese make a varnish from the sap of Sumac tree that is water proof that they use on cups and bowls. but can think of the name of it.
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Arlin Eastman
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Re: safe finish
Reply #17 - Apr 5th, 2017 at 12:06pm
 
I am just thinking since wood is like Straws then nothing needs to be done in the inside but if the outside bottom is sealed with epoxy it will not leak out.
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« Last Edit: Apr 5th, 2017 at 12:08pm by Arlin Eastman »  

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Ron Sardo
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Re: safe finish
Reply #18 - Apr 6th, 2017 at 2:40pm
 
Arlin Eastman wrote on Apr 5th, 2017 at 12:06pm:
I am just thinking since wood is like Straws then nothing needs to be done in the inside but if the outside bottom is sealed with epoxy it will not leak out.



What about oak barrels that store whiskey or wine? No finish on them.
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Ed Weber
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Re: safe finish
Reply #19 - Apr 6th, 2017 at 3:06pm
 
Ron Sardo wrote on Apr 6th, 2017 at 2:40pm:
What about oak barrels that store whiskey or wine? No finish on them.


I can't tell if you're being a smart aleck or not. Undecided

For those who don't know. a barrel has no end grain exposed to the liquid to act as a straw. The staves (side-grain,) and head (side-grain) swell and seal with charring and hydrating from their liquid contents.
The bottom of a tea cup would be end-grain and would need to be the right species to avoid leaking, if not sealed in some way.
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