Lumber Core Plywood

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Forum topic by ziller posted 02-04-2010 05:48 AM 1312 views 0 times favorited 3 replies Add to Favorites Watch
View ziller's profile


69 posts in 3064 days

02-04-2010 05:48 AM

Topic tags/keywords: question plywood

Hello Lumber Jocks,

I am trying to gain as much info on lumber core plywood as I can. I am doing a project for a designer that requires that I don’t use any MDF products. The project involves some good sized slab type doors that I would usually build out of MDF plywood. Even a good domestic veneer core plywood doesn’t stay quite flat enough for this application. I am wondering if a lumber core would do the trick. Any info is appreciated and thanks in advance for your time.

-- Zach, Las Vegas

3 replies so far

View bobkberg's profile


439 posts in 3042 days

#1 posted 02-18-2010 06:04 AM

My inclination would be to go to the other extreme, and use a european cabinet grade plywood like 7 or 9 ply. The more plies in a given piece of wood (allowing for good manufacturing process control), the more stable the end product is going to be, since no one ply exerts a particular dominance over any other, and they’re all “fighting” one another.

That said, you didn’t mention how thick the end product has to be, or what the tolerances are for warpage and such.

If the end product needs to be of a particular thickness, solidity, or density, it may be reasonable to consider other core materials besides wood. One of my favorite materials is garolite (see It’s not cheap, but it’s VERY stable, and can be cut with woodworking tools. It’s also tough enough to drill and tap – some people make gears with it.

-- Bob - A sideline, not how I earn a living

View TopamaxSurvivor's profile


18249 posts in 3644 days

#2 posted 02-18-2010 06:12 AM

Do they make wood faced garolite? I saw copper faced.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View John Ormsby's profile

John Ormsby

1283 posts in 3706 days

#3 posted 02-18-2010 06:27 AM

How about honeycomb type of a core. The doors would be lighter, flatter and very strong. It would basically be a torsion door.

-- Oldworld, Fair Oaks, Ca

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