Making a garage cabinet for a friend, going to be used mainly for household
supplies, etc. The shelves are 30" wide by 23" deep.

I have only used the metal Knap & Vogt -type standards and clips for
adjustable shelving in the past. They work well and support a reasonable
amount of weight. I was going to use 6 standards (3 on each side) for
these shelves, which is probably overkill.

But lately I have gotten interested in the 5mm pin supports. I know that
the strength of these depends on several factors, one being the type of wood
used. So, for those who have used these things, how will they do in, say,
baltic birch plywood? Are the metal track/standards going to be
significantly stronger? Shelves will be 3/4" plywood.

Benefits of pin shelving include not having to dado for the metal standards
and a neater overall appearance.

Happy New Year!

Ralph