Thanks for all the encouragement, guys.
I was in a hurry yesterday when I posted and forgot to say thanks.
Today was a gluing and clamping frenzy, as I did all four layers per side on both sides of one Mini-Gun cab--all at once!
I began by spreading glue on the frame and let it dry while I cut the 1/4" MDF to form the curved sides. A fan helped to speed the glue drying.
I stacked some cardboard on the workbench, so the 1/4" MDF 49"x97" sheets would be supported during the cut down the middle and to protect the workbench.
Set the cut-depth. Clamps hold two sheets together during the cut. I later realized that I need to cut a third sheet to have enough for the second cab. I'll do that tomorrow.
Remember to protect your eyes, ears and lungs.
After that, it is easy to cut to size on the table saw.
In the interest of frugality, the inner and outer panels are single, full size pieces and the two inner layers will be pieced together from two pieces, with the joint staggered from one layer to the next.
Let the gluing and clamping frenzy begin.
On your mark, get set...
I got faster as I went along.
As far as I'm concerned, if the clamps aren't bowed, I'm not using enough pressure. But this was funny enough to share with you fine folks here at AVS. This 3/4" Black Pipe (inside diameter) had a weak weld joint, which began to give way under pressure. I replaced it after I took this shot.
I have a Curvomatic on the way and I am excited about trying it, because this Howitzer form can do only one curve and it is bulky and heavy. It has one use only. That is it's limitation. The Curvomatic is limited by my imagination. I think Big Jim can help there and I hope he opens up a user forum some day. The curvy possibilities are staggering. I know, I sound like a commercial, but I can't help being a little excited about it.