
I make mine out of contiboard from B&Q. I am on to model number 3 now! I simply take the dimensions I want for the inside and ad on 4 inches (approx) for the size of the base. I make the front in 2 parts, so it can be very low as you deliver the pups, and then you can slip the higher plank in place later.. Just mark where you need to drill to joint the corner, I use L brackets, bolts and wing nuts for ease of screwing up. This make it simply to put up and take down for flat storeage. You need to place the assembled top onto the base and mark a space either side x 2, to drill for bolts. Fit heavier duty l Brackets to the sides to match these points. Put bolts inot holes in base and fix with nut. then you can just make slits in Vet bed to fit over the bolts, then place the assembled top section over, and tighten the L brackets down with wing nuts, clamping the vet bed firmly in place. It means it takes a couple of minutes to change the vet bed each time, but is impossible for the bitch to dig it up, or for pups to slip underneath it accidentally. Fit plastic U channel to frton, so the loose panel can be slid in when wanted. On my latest model I fitted 4 castors to the base, but on the previous ones it Fit 2 2"2" battons to lift it clear of the floor. Hope this all makes sense!
bye
Gwen