types of plywood and mdf - Woodworking Talk - Woodworkers Forum

 
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post #1 of 6 Old 10-05-2008, 04:26 PM Thread Starter
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types of plywood and mdf

Hi All.
I have been looking on line to find a chart that list all types of plywood and mdf there grades and there use. So far I have come up empty if you have seen this info on line please let me know.

Thanks Bruce.

This is only my opinion others may think differently.
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post #2 of 6 Old 10-05-2008, 04:47 PM
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The short version

There are many grades so I will give you the short version. Someone else can give you the long version.

MDF it's an abbreviation for Medium Density Fiberboard. I only know of one grade, the medium density grade.

Plywood is different. I assume you are talking about building furniture and cabinetry projects and not construction grades.
Ok:
Cabinet grade comes in plain sliced (actually sliced and bookmatched) and rotary cut (peeled like a roll of toilet paper)
Most people use the plain sliced for its looks. Less often is the rotary cut. These are used in furniture and cabinets.

Paint Grade: this is made for painting and is not attractive at all.

Then there is Baltic Birch which comes in 5" x 5' pieces, or the American version - Apply Ply, which comes in 4' x 8 ' sections.
Both of these have many plys with no voids. It is used extensively in drawer sides or where exceptional strength is required. For drawer sides, it dados very well. Also is great for making jigs and templates.

Well, that's about it for me.

One more thing, I forgot to add BORGwood. The standards for grading plywood are really subjective and the BORG"s really take advantage of that fact. If at all possible, do not buy from the big box stores. HD is less than 3 miles from me and yet I drive 50 miles each way through downtown Houston traffic to go to a reputable Hardwood lumber yard.

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Last edited by Tony B; 10-05-2008 at 06:53 PM. Reason: I forgot to add BORGwood
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post #3 of 6 Old 10-05-2008, 07:08 PM Thread Starter
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Tony.
Thanks for taking the time to reply I ask because I came across some abbreviation I could not find. Some of them like CCX -MSF-FSC CERTIFIED sorry I did not make myself more clear in my post I guess what I am looking for is the definitions of the abbreviations. Thank you again for you fast reply.

Bruce.

This is only my opinion others may think differently.
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post #4 of 6 Old 10-06-2008, 04:49 AM
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Here I go under the bus again but whats the difference in...

melamine and MDF?
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post #5 of 6 Old 10-06-2008, 07:10 AM
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Melamine is a thermoplastic covering (usually) on Particleboard but sometimes MDF
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post #6 of 6 Old 10-06-2008, 08:33 AM
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Quote:
Originally Posted by Bruce B View Post
Hi All.
I have been looking on line to find a chart that list all types of plywood and mdf there grades and there use. So far I have come up empty if you have seen this info on line please let me know.

Thanks Bruce.

There can be confusion on grading and labeling. Basically there is Interior plywood, used for decorative use, and Exterior plywood, used for construction applications.

A very brief grading explanation is that for interior use, hardwood faced veneered plywood is graded with an alpha character for the face quality (usually only A & B), and a numeric grade for the back face quality (1-4).

For exterior/construction grading, both the face and back have alpha characters (usually B & C).

For a sheet goods explanation this one ain't bad.






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