J Classic Core®
Classic Lam is what I wanted due to painting my new cabinets.
J Classic has tighter spec's or so it says. 1/2" to 1"+ plywood for
These are available all over the world, and through Home depot and
some hardwood venders.
These are interior glued, not exterior glues like MDO and HDO, the
same company supplies those as well, HD is one of their vendors and
you can ask for vendor sheets and wood samples on these products.
From what I see all are considered F L A T. So painting will not
amplify hidden voids and knots, and the Classic Core has veneer layers
on the outside like the J-Classic.
It is worth the look, and lucky me, a worst case is a seven day wait
unless the local store stocks it.
And that is my bottom up look at it.
So if the experienced guys would give their top down comments, it
would be appreciated.
A bit of a tangent here, but my experience with Columbia
Forest Products at Home Depot is poor - the plywood had
many internal voids and tended to delaminate. I have heard
from others that Columbia is a quality vendor, so I assume
that what they supply to Home Depot is a lower cost, lower
spec product than what they sell elsewhere.
So I would proceed with caution in sourcing those products
thru Home Depot.
Like products from China, Ford, GM, Porter a Cable, etc., they all produce
from pretty good to pretty bad. I suspect that HD is stocking something on
the cheap end of the spectrum from Columbia to please it's customers.
A good deal of HD's stuff here is from roseburg, and the better stuff
is shipped wrapped. But the yard in LA from their wholesaler is abut
12 acres in size, so keeping their stock dry would be a problem in
But they, like Lowe's, buy middle of the road graded veneer, one side
usually sucks bad. So that is one of the questions I am going to ask
them. What they call paint grade usually means flaws on the skin that
you shouldn't notice once it is painted.
There is supposed to be other venders who use their pulp for say,
maple, as a compressed "mdf" outside layers, but I have not been able
to verify that.
Anyhow Pure Bond is the overall name for this class of their mdf
plywood for the interior.
Keeping my fingers crossed. :)
I don't recall the brand of MDO I bought for my current job bit it is
pretty close to being the thickness as it is sold as, 1/128" over 3/4".
On a side note I going it amusing that the Columbia sheets are 1/2" longer
than the size you expect. This is becoming common place and "sometimes"
helpful. Not helpful if you need 8' or 4' and have to remove the excess.
Like if you are putting sheets up on walls with normal stud spacing.
That is what they call flat, I would also hope that the product lays flat
and does not bow or warp.
I saw a local hardwood store that has some of the Classic Lam, about
five sheets, but they didn't know what it was called so the girl at
the counter gave me a price which was a bit high like 65 bucks a
sheet, and I think she just gave me a price on veneered stuff. They
guy in the stockroom said they just got it in recently on a sales
pitch from the supplier, and he didn't know much else about it. I am
going to double check with them after I get HD pricing.
The sheets were at eye level and they looked mighty flat and the top
sheet slid smoothly.
I may call the supplier to see if what they sell to HD is different in
grade. After I get the pricing.
~ No one here who can tell you if a particular brand/stack/batch/type of
plywood will suit your purposes, anymore than they can sell you a
winning lottery number.
~ PlyWOOD, is a wood product. There is nothing about wood that can be
guaranteed, by manufacturer, dealer, and/or their salesman, to be flat,
straight and defect/void free ... but you can buy smartly (often simply
buying enough to give you extra) and then learn to deal with the
~ Experience helps, but is no guarantee you will not be fooled on occasion.
~ You can cut your losses by finding a supplier with an informed sales
staff who can give you the best odds of getting what you want _from
their inventory_ (preferably a dealer that also sells hardwood). Simply
tell them your _specific_ project requirements, and buy accordingly.
~ If a salesman doesn't know what he is selling and you buy anyway, you
are the sucker.
~ If what they sold you is not suitable for what you spec'd, don't fail
to let them know. Most places will often offer a knowledgeable customer
a refund, replacement, or adjustment because the product sold did not
meet the previously stated specifications.
~ As always, YMMV, Caveat emptor ...
On Monday, March 21, 2016 at 10:20:27 AM UTC-5, Swingman wrote:
Quoted for truth. I have purchased "cabinet grade, void free" that had a g
reat deal of voids. More than once. When I complained to the lumberyard,
they in turn put me to the website that defined the guarantee of "void free
" as having less than XX 3/4" voids per sheet. Playing the odds of finding
those voids in the amount that would void that promise, the odds are well
stacked on their side.
On the other hand, I have bought inexpensive plywood simply for its paintab
le face, and found it to be void free and me wishing I had bought more.
On 3/21/2016 1:50 PM, email@example.com wrote:
Sounds precisely like the definition of "Water Proof", on a TiteBond III
bottle of glue, when you look up the testing methods as set up by the
"Adhesive's Good Ole Boy's Club".
The title of the testing says Water Proof in the title but no where in
the explanation is there a mention other than "water resistant".
More and more I am finding that the "import" is better than the domestic.
On Monday, March 21, 2016 at 3:57:24 PM UTC-5, Leon wrote:
Ditto. In a rush to finish up a cabinet repair, I bought some 3/4 ply from
HD off a brand new lift. It clearly said "Product of Chile" on the ends.
I sawed it up for paint grade shelves and it was great quality as well as
inexpensive. I have to say though, I have no idea what kind of wood was on
the faces. It was white and close grained, and it was sold as something l
ike "cabinet grade" plywood.
Almost no voids, and sanded/primed/painted great.
In this particular case no one I talked to has the foggiest idea about
the products. The local hardwood store at best had a vague idea that
it was suitable for cabinets, painted, and the other related veneer
for cabinets and furniture. But they were waiting for feedback from
I should have phrased by question differently, sorry.
I was hoping for some input from someone who may have been familiar
with the particular product line, Pure Bond. I also included the sales
cut sheet for the product line just so anyone can see the blurb from
the manufacturer. They seem honest enough about the product, reduced
after effects from voids, knots, etc. They even spec out 11/16's as an
From the same manufacturer the have "DrawerSIDES" in varying sizes and
finishes with a 1/4 groove for the bottoms. I liked the UV white
option and am contacting vendors for either a sample, or one piece to
see how it is. As I stated the supplier on the plywood is will to ship
out samples of the product.
Which has links to the various product pdf's and from there to the
literature and free sample links.
I have seen mentions of products like this in a couple books which did
not mention vender names, just the type of material, although none
mentioned the product with a veneer on the outside which would also be
flatter than normally seen. At least if one can believe the
It was funny last night when I logged on to their system, it saw my
area code or ip address as somewhere else that threw me over to Saudi
Arabia, and the locations of their venders over there. LOL.
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