I have a partition wall that needs some extra studs fitting. Its made from 3"x2" rough sawn timber and has cross members, i dont know if you would call them noggins. The plasterboard has been removed on the side im working from but the problem is i cant remove the board from the other side. The board is nailed to some of these cross members, so what would be the best way of fitting the extra studs securly. ive had a couple of ideas one being just to cut the new timber to fit in between the bottom plate and the first row of cross members and so on up the wall. This would be the easy method althoug it doesnt seem very solid. The second way i thought of was to cut the new stud to full length then cut out half depth and do the same to noggin were they meet so they interlock. Finally glueing and screwing this new joint. I dont know the name of the joint but its like say were the crossmember on a crucifix joins the vertical piece. This would obviously be more work but it seems the more solid route. If i go this way what would be the easiest way of cutting out the bits for the joints.