Quote:
Harpmaker wrote:
 Hi Tweakophyte,
First, the numbers for Doable (using the XYZ figures from AVS) are:
L*a*b* = 89.533331, 3.843623, -4.271671
D65 degree Color Temp = 6741.7
These were obtained by using the calculator at http://www.brucelindbloom.com/index....alculator.html
As for mounting your Doable, how flat is the panel itself? What finished screen size are you after and how large is the Doable sheet? I'm also assuming it's 1/4 inch thick. Sorry if you've given this info before.
As for sealing wood with poly (or anything else)... I wish it were so. Unfortunately all wood finishes do is slow down moisture migration, not stop it. Some are better than others (poly is the best that is available to the home-user). One tip, if you finish a piece of wood, finish BOTH sides. Only finishing one side can actually CAUSE a board to warp due to uneven moisture absorption.
In my experience, plywood thinner than 3/4 inch will curl unless it is prevented from doing so by nails, screws or glue. The exception is Baltic Birch plywood which has many more plys than regular PW and is voidless. It's really nice stuff to work with, but a bit expensive. |
Cool site. Btw, I used just the RGB (which I am sure is less accurate than the XYZ) and D65 reference and got a color temp of 6728. I guess I am not nuts for noticing the blue push.
Doable is 1/4" thick. The dimensions are a little less than the standard 49" X 87" (I forget and am too lazy to find my paper with my exact numbers). I got it with the intent of using the tempered masonite side in mind because I wanted to make some BW. For $16 is it a nice piece of material. It sounds like the white (blue) side is good to paint on, too.
In the context of this thread, the goal is to help my figure out the best way to get some kind of substrate to float. If MDF is the way to go, it's the way to go. I don't want to force dobale into the solution if it's not worth it.
That said, it sound like I may want to use poplar. Part of my is thinking I could make the frame on edge, then use liquid nails and some finishing nails to mount the doable. I'd do this with the intent of sinking and spakling the nails... sound like a PItA.
Has anyone suspeded MDF with no framing? How thick would I need to prevent warping and how heavy would that sucker be? Assume it's 49" X 87".