Cupping semi finished table?!

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Forum topic by JPB771 posted 08-23-2018 12:14 PM 498 views 0 times favorited 7 replies Add to Favorites Watch
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3 posts in 513 days

08-23-2018 12:14 PM

Topic tags/keywords: question tip trick

Hi All,
I desperately need some help. This is a top of a semi finished dinning room table made out of soft maple.
It’s stained with an oil stain. It had a wipe on poly on both the top and bottom but my friend who made the table realized that there were pigtails in the wood from The sanding, at first he didn’t realize it was the sanding and thought it was the poly not filling in between the sanding after the coats.
So, he suggested a heat gun to remove the poly and it immediately warped, cupped the right side where the heat was being applied.
He added water and the table top was in a barn with humidity of 90%. We live in the North East.
It went back flat. We decided to move it indoors and overnight it acclimated to the humidity indoors at 60% and it started cupping gain.
It’s been inside for a week and it’s not getting better. We thought maybe flip it over and apply heat from a heat gun on the opposite side and maybe it will self correct but the bottom still has poly on it.
How do I fix this. I’ve got about 2 weeks before family visits and we have no table to eat.
Hoping there is a simple solution.
Thank you all for your expertise!

7 replies so far

View Bill White's profile

Bill White

5241 posts in 4561 days

#1 posted 08-23-2018 01:38 PM

No way to gauge the size of the cup from the pic. You might just pull it down with table top fasteners when it is installed to the base. I use “Z” clips for my tops, and they do a good job if the top is not too far out of flatness.
Might just be a case of “install and see”.
I hope that you are considering aprons and cleats on a top that size.

-- [email protected]

View Jared_S's profile


271 posts in 560 days

#2 posted 08-23-2018 10:30 PM

They do that all by themselves sometimes. As said the apron and some buttons will pull it flat.

View TheFridge's profile


10859 posts in 2087 days

#3 posted 08-23-2018 11:14 PM


-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Aj2's profile


2645 posts in 2399 days

#4 posted 08-23-2018 11:27 PM

What apron? That seems to be missing

-- Aj

View JPB771's profile


3 posts in 513 days

#5 posted 08-24-2018 01:41 AM

Can you please clarify “The Frisge” please. What is aprons and buttons.
I’m a housewife and this is all new terminology for me.
Thank you so much!

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3 posts in 513 days

#6 posted 08-24-2018 01:41 AM

Thank you Jared S

View Jared_S's profile


271 posts in 560 days

#7 posted 08-24-2018 02:05 AM

Your friend that built the table should know all of this but.

Aprons are the boards that separate the table legs.

Buttons are blocks of wood that are screwed to the table top and sit in grooves in the apron (they are not and can not be screwed to the apron or the top will crack)

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