Can I use old plywood?

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Forum topic by Sandra posted 626 days ago 946 views 0 times favorited 12 replies Add to Favorites Watch
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4151 posts in 678 days

626 days ago

Good evening all,
I’m out of province visiting my mother in law, missing my shop and laptop!
There are several pieces of 3/4 ” plywood in her basement. It’s been stored flat, off the ground in a heated area. I’m guessing it’s 30 yrs old at the very least. Provided its not warped or decayed, is there any reason not to use it?
I’m planning on building a cart for my planer using 3/4 ply.

-- No, I don't want to buy the pink hammer.

12 replies so far

View yrob's profile


340 posts in 2256 days

#1 posted 626 days ago

Why not ? What could possibly go wrong (famous last words..)

-- Yves

View patron's profile


12976 posts in 1944 days

#2 posted 626 days ago

probably better than anything made today sandra

check the edges for de-lamination

sounds like a good score

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View pmayer's profile


565 posts in 1668 days

#3 posted 626 days ago

if it looks ok i’m sure it will be fine.

-- PaulMayer,

View racerglen's profile


2256 posts in 1384 days

#4 posted 626 days ago

Go for it, I have used 40 year old stuff my dad had, marine grade,
made an nice replacement wheel for his bandsaw..kinda says
something about holding the lamination eh ?

-- Glen, Vernon B.C. Canada

View Lifesaver2000's profile


508 posts in 1715 days

#5 posted 626 days ago

I have a few small pieces of A/C grade plywood still left from a project I did about 30 years ago and it is still good when I saw into it. And the stuff is actually 3/4 of an inch, not 23/32 or some other weird size.

View Monte Pittman's profile (online now)

Monte Pittman

13349 posts in 941 days

#6 posted 626 days ago

I agree with the better than today’s philosophy

-- Mother Nature created it, I just assemble it. - It's not ability that we often lack, but the patience to use our ability

View gfadvm's profile


10599 posts in 1293 days

#7 posted 626 days ago

I have used lots of old ply. If it has areas of delamination along the edges, just squirt a healthy dose of wood glue in the gap, clamp, and you’ve saved it.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View yrob's profile


340 posts in 2256 days

#8 posted 625 days ago

Today I was at the BORG to get some plywood. Found several sheets that already had delaminations in them with significant gaps. You would think that at least when its new it ought to be in good shape but no.

-- Yves

View a1Jim's profile


112001 posts in 2180 days

#9 posted 625 days ago

What can it harm to try and use it ,go for it.

-- Custom furniture

View crank49's profile


3341 posts in 1574 days

#10 posted 625 days ago

I have seen mold cause plywood to delaminate, but otherwise, just the age won’t make it break down in my experience.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View Sandra's profile


4151 posts in 678 days

#11 posted 624 days ago

Dang. Thought I was going to come home with some good 3/4 plywood, but when it was all said and done, none of the pieces were more than 7” wide at any point. I did come across a nice little combination square though that my mother-in-law didn’t want.

In the past few years, I’ve been helping her clean out parts of her house, and have found some doozies. Last time I cleaned out a basement closet I found a four shot .22 pistol in a bread bag, bullets included. She didn’t even know it was there. I had to have yet another conversation with my kids about safety at Grandma’s house….

Glad to be back home tonight.
Never a dull moment.

-- No, I don't want to buy the pink hammer.

View MonteCristo's profile


2094 posts in 792 days

#12 posted 624 days ago

With plywood, the older the better. With every passing year they are using poorer and poorer logs to make plywood.

-- Dwight - "Free legal advice available - contact Dewey, Cheetam & Howe""

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