ply torsion top

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Forum topic by Dave posted 1653 days ago 781 views 0 times favorited 5 replies Add to Favorites Watch
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26 posts in 1668 days

1653 days ago

I want to make a assembly bench 4’ by 6’ @ 20” high and want a dead flat top.
Can i use 3/4” ply to build the torsion box with a melamine top?

-- Dave

5 replies so far

View Dave's profile


26 posts in 1668 days

#1 posted 1653 days ago

I forgot to mention that my friend has 4 kitchens to make and he is to busy to do it himself so i said i would help build all the boxes for him .This is also a good way to make a couple grand to put towards my shop tools. That is why i want to build this assembly table so it is easier to put them together at this height.Also that is why i wanted the mel top so it is easier to slide the cabinets around on.

-- Dave

View Ger21's profile


617 posts in 1732 days

#2 posted 1653 days ago

If the melamine is two sided (typical), you’ll need to rough it up good to get a good glue bond. The glue bond is critical in a torsion box for it to remain flat. You could use melamine glue (Roo glue), but it’s a bit flexible. You might even consider routing shallow (1/16”) dadoes for the frame members.

-- Gerry,

View End_Grain's profile


95 posts in 1738 days

#3 posted 1653 days ago

There is a plan for an assembly bench in the current edition of Wood magazine. Claims to be dead flat. Haven’t looked at it in detail since I don;t need one right now.

-- My greatest fear is that when I die, my wife will sell all my stuff for what I told her I bought it for.

View thewoodmaster's profile


55 posts in 1793 days

#4 posted 1653 days ago

go to and look in his video archives for a video about a torsion box assembly table. there are 2 videos there, one about the top and one about the base. there is also a set of plans you can download. the top is made of mdf with a piece of 1/8” hardboard on the top to be replaceable. the bench is a little taller than 20” but it has lots of storage space under it. my dad and i both built one of these and they are super strong and flat.

-- dan "insert pithy woodworking coment here"

View Dave's profile


26 posts in 1668 days

#5 posted 1652 days ago

Thanks for all the info . I looked at the Woodwhisperer vid and now know what i need to do.

-- Dave

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