I bought a 4X8 sheet of good plywood, and the chipboard they make floors with. Had 'em cut down the middle so I had 4 2X8 pieces. Bought a gallon of carpenter's glue,laid a plywood sheet down, slathered it with glue, laid chipboard, glue, chipboard, glue, plywood. Squared them up as best I could, and put several C-clamps on the edges, stacked all the bullet lead, bullets, brass, and other heavy stuff I owned on it and left it for a week.
Trimmed the edges with a circular saw, added 4X4's for legs. It does not "go up and down"!
If I ever escape PDRCA, it's staying, I will not move that heavy so&so!
Hope this helps, I'm as tool challenged as any, if I can do it, you can!
The Bill of Rights, and the Golden Rule are enough for civilized behavior. The rest is window dressing. Shoot carefully, swifter...