Comments on: A baltic birch plywood primer

By: sally

sally — Fri, 06 Jan 2012 04:52:01 +0000

please i need to know the price of birch plywood grade pc 152.5*152.5 glue is mr please i need to knoe the price thickness 3mm

By: Jim Daire

Jim Daire — Thu, 22 Dec 2011 22:15:22 +0000

Yesterday, I bought “Baltic Birch Plywood” (I couldn’t find any place-of-manufacture markings such as Dan’s described above, so I’m using quote marks) at Rockler Woodworking (Maplewood Mall, north of St. Paul, MN). The sheets of BB-grade plywood were gorgeous and required only light sanding with 180 and 220 grit paper before applying 2 coats of clear satin urethane (I used no stain).

By: Carla

Carla — Tue, 13 Dec 2011 03:30:47 +0000

We’ve had plywood on our floor for years and it still looks fine.

By: Tony

Tony — Mon, 03 Oct 2011 10:25:40 +0000

Warping plywood can be a pain, but I have found it is true what Harold Payson said in his book “instant boats,” that plywood that has high humidity on one side will warp towards the other side. He would just toss the plywood on the lawn on a sunny day with the warp upwards, allowing the sun to dry the top, and the ground to humidify the bottom. Often, within that day, the sheet becomes flat again, or, if unwatched, warped in the opposite direction. Try it out with some warped scrap if you like.

By: Nate

Nate — Fri, 22 Jul 2011 19:56:54 +0000

Do NOT use plywood for speaker cabinets. I have been building speakers since the ’60s and I can attest to the fact that MDF is the most highly recommended material to use. It is acoustically dead and will not “ring” or color the sound. I use 3/4″ MDF for the entire cabinet except the front baffle board where I use 1-1/8″ MDF or, for subwoofers, 1-3/4″ thick MDF typically laminating two 3/4″ slabs together. The extra thick front will stand up to the constant pounding by the low frequency drivers.