Just finished this and it was a learning experience.
The stem holes are to small ( can't measure ). From bottom of where pipe bowls rest to top
is not height enough-3/8 inch ( same problem). Should have deepened the bowls resting area.
Wrong tool. Had right tool but wanted to use my carving gouges. Last, don't use treated pine.
It was free thou.
This is for out side use in the screen in porch.
Joe