Thank you. But in principle the 4x4 is OK?It’s exactly the same size - both 16 square feet so that is fine
Presumably this 4x4 space would be for indoors?
If so, then it may just be easier to use c&c grids as a holiday cage (4 grids by 4 grids actually covers more than 16 square feet given a grid is 14 inches not 12 so that would give them more space). Cable tie them all together except the two ends. They then concertina up for easy storage when not in use. When needed, unfold it, pop the connectors on, put down a plastic sheet as a base, add bedding and then that’s a perfect and easily transported cage (it’s what one of my spare cages is)
If you do want to do it out of wood, then Id make the sides higher than a foot. C&c grids are 14 inches high so I’d not go any lower than that
You asked to be kept posted. Put the 6 piggies together in the outside run yesterday. I closely followed the advice given on this forum on Bonding which was so useful. They had approx 5 hours together before making the decision to join the 5ft and 4ft hutches together so bonding was not interupted by having to be separated overnight and to give them 9ft on a single level. Piggies had about 8 hours together before being put into the newly converted hutches. I just have to sort out how to arrange the covers over the tunnel. So far so good. Thank you for your advice throughout.They need several hours in a neutral territory bonding pen before moving to the cage so you should have a reasonable idea of how things will be. However, it does take two weeks to fully form a hierarchy with a risk that they can figure things out and it still fails during that two weeks. So youd just want that back up to be able to immediately separate them again.
Being in the divided run unfortunately is no indication of what will happen during actual bonding.
Keep us posted if you do go ahead with it