Hi, my husband Dave built our whelping box. He used tongued and grooved around the sides, back and front and plywood for the base. The front is removable for when pups old enough so that they don,t start climbing over the front and get hurt or left out on their own. Dave also put a pig rail around the inside of the box so that none of the babies can get hurt if they get behind mum. When the babies get to aroung five weeks old i put them in a hyware basket as this is when they are starting to find their teeth
. This also means that the whelping box has stayed almost
chew free. There is a partial photo of our whelping box in the puppy photo gallery page four. Hope this has been some help, i,m hopeless with blueprints and wouldn,t no where to start regarding building whelping boxs, my hubbie is so handy with anything like this and has saved us loads of money
as the bought ones can be very expensive. Mind you hubbie always insists that he will build it if i need anything, lucky me!
.