Plywood rant.

Re: plywood section fitup, spackle compound is easier and quicker than the table saw.
 
Capt. Geoffrey Thorpe said:
5/8 plywood was never actually 5/8. Just like a 2x4 is not 2 inches by 4 inches. But, a member of the great unwashed masses got all upset about "false advertising" so now the Borg doesn't give you the nominal size (5/8) but the actual after sanding size (19/32).

You can't fix stupid.

https://topclassactions.com/lawsuit...class-action-alleges-misleading-lumber-sizes/
Click to expand...

Bullpoop. While just about every wood product has nominal sizing (2x4's aren't 2 anythings by 4 anythings), that is NOT the case with piywood. The trade thicknesses are the actual FINISHED thickness. Lowe's is selling an odd non-standard size.
 
flyingron said:
Bullpoop. While just about every wood product has nominal sizing (2x4's aren't 2 anythings by 4 anythings), that is NOT the case with piywood. The trade thicknesses are the actual FINISHED thickness. Lowe's is selling an odd non-standard size.
Click to expand...
Lowe’s now sells plywood by “Common thickness” and “Actual thickness” sizes, which are different.

And the 15/32” is the “common thickness” not actual “as sanded.”

Expand “Specifications” in the link below.

https://www.lowes.com/pd/15-32-in-Common-Pine-Sanded-Plywood-Application-as-2-x-2/3043814
 
flyingron said:
Bullpoop. While just about every wood product has nominal sizing (2x4's aren't 2 anythings by 4 anythings), that is NOT the case with piywood. The trade thicknesses are the actual FINISHED thickness. Lowe's is selling an odd non-standard size.
Click to expand...
Lowe's might be buying it from non-American sources, where metric measurements, for domestic consumption, are often the standard.

19/32" is .59375".

15mm is .59055".

The difference there is the thickness of the sheet of paper, and you won't detect that without a micrometer or precise calipers.

Canada commonly calls 3/4" plywood 18mm, yet 18mm is .040" or so below .750". We call that a "soft" conversion. One has to watch for that discrepancy when doing precision woodwork. Assuming that it's .750" can get you some ugly mistakes.
 
And bearings, the world over are sized in inches.
 
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