On Sun, 17 Jul 2016 04:22:04 -0700 (PDT), Michael
wrote:

On Saturday, July 16, 2016 at 7:37:28 PM UTC-5, wrote:
On Sat, 16 Jul 2016 14:45:40 -0700 (PDT), Michael
wrote:

I'm making this solar kiln.

https://pubs.ext.vt.edu/420/420-030/420-030_pdf.pdf

My kiln is smaller, 8' X 4'. I haven't done much framing in my life, so I'm a little at sea, although it looks pretty straightforward. But I do have two questions.

On page 9 of these plans -- North wall frame and doors -- the plans call for a 2x8 across the frame. I have two questions. 1) Since I am making a smaller version, will a 2 X 6 do for this piece? (I have one handy. That's why I'm asking. And 2), are there two 2X8s in this plan fastened together. The reason I'm wondering is that if there is just 1, I'm not sure how the doors close flush.

I would think a 2x6 would be plenty since yours is half the span.
There should be two, here. With 2x4 walls, I put a piece of 1/2" ply
between them That gives 2 X 1.5" + 1/2" = the width of a 2x4. Then a
crapload of nails pounded both directions through the assembly.

Forgot: Glue the plywood between the 2x6s, too. It'll be *plenty*
strong.

Sorry for the rookie questions, but I'm trying to avoid getting bogged down with mistakes.

This really isn't a woodworking question but since it's a kiln. ;-)

Any other advice appreciated as well.

Thanks,

Mike

Thanks for the information! Much appreciated.

You're welcome.