The tilting bracket, three attempts. I thought this small one would be easy. Well it turned out not to be. The first is the one in the middle. The nipple is a vent opening.
Problem is it is almost hollow.
There is a hole where the arrow points, with a big cave inside. It seems some sand must have broken loose when I put together the two halves of the mold, as I poured sand out of this cave. The next attempt is on the right. It has sunk in quite considerably inside the circle. It had a riser at the place where the first just had a vent hole.