Maple slab table top - will it cup?

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Forum topic by jtm posted 04-01-2014 06:45 AM 1114 views 0 times favorited 4 replies Add to Favorites Watch
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230 posts in 1661 days

04-01-2014 06:45 AM

Hi all,

I’m about to embark on a maple slab table top.

I have a large piece of ~8/4 maple, but it is slightly cupped. If I mill it perfectly flat, is the cup likely to come back?

Also, would you use a single piece of maple for a table top? Or would I be better off ripping it down and re-gluing? (It would be a hell of a lot easier, since it’s much too large for my Dewalt 735 – I’ll have to use a router sled). Also, I’ll also lose a fair amount of material while milling flat. I could halve that loss by ripping it in two.

The legs and apron will be solid walnut.

Thanks in advance.

4 replies so far

View TheWoodenOyster's profile


1317 posts in 1960 days

#1 posted 04-01-2014 11:43 AM

I’d rip that in half if I were you. You’ll lose a ton of thickness if you try to keep it in one piece, and it might get thin enough to start getting flimsy.

-- The Wood Is Your Oyster

View WDHLT15's profile


1747 posts in 2501 days

#2 posted 04-01-2014 12:05 PM

If you rip it in half, you will relieve some of the stress that caused the cupping in the first place and the top is more likely to remain flat.

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln.

View mahdee's profile


3888 posts in 1792 days

#3 posted 04-01-2014 12:17 PM

You have some deep clamps. If you want to keep it one piece, use some hardwood over the cup and use your claps to see how much of the cup can be flattened. If it works, then your aprons should hold it flat. Apply the finish to the bottom first, use the aprons to flatten it, then work on the top. You can also utilize 90 steel attached to aprons for added strength but I don’t think you will need it.


View Shawn Masterson's profile

Shawn Masterson

1325 posts in 1973 days

#4 posted 04-01-2014 12:29 PM

being you are not going live edge, I would rip it and do your best to line the grain back up.

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