I'm not a member there, but you might try a search and/or register.
I built a set of DQ-10 stands years ago. I bought some 2x2 walnut and a long 2 x12 walnut board. I cut the board into two pieces so each was about 2/3 the width of the DQ10. I mounted three 2x2 vertically in the middle and made them 12 inches tall. I put a 3/4 inch plywood on top of these for the DQ-10's to sit on. They worked great and I used them for years. I only wish I had made them taller so the middle of the DQ-10s would be at ear level when I was sitting. The higher they are the less bass you hear but I had subs, so that didn't matter.
Atlasdoc2, Did you ever come up with the plans for the Dahlquist stands, I have a copy of those plans for the three post type stand
. If you haven’t tracked any down yet I could mail them to you.
The top plate has a bit of an "L" shape on the back side which is a bit hard to visualize on the plan. If you look at the top plate on this link for the solid type stand, which I don’t have plans for, you can see what I mean: