My 16-year old son built this Arts and Crafts coffee table almost completely on his own. He built it from plans. We did minor parts together. I stained and he wiped the stain to get consistent finish between the pieces.
The plans do not have a tile top so we did some improvising. He made through tenons and a frame for the top. We had to do some improvising since things didn’t line up exactly on the top since the tenons were so long. In the end, we cut the tenons shorter and used plugs on the exposed side. Worked well.
I struggled for a while on what base to put the tile on, and remembered I had a partial sheet of 1/2” hardibacker from when we did the laundry room floor. He cut it up and we mounted the hardibacker to the base. Should be more stable than a plywood base (hopefully).
-- Doug - When all you own is a hammer, everything looks like a nail.