On: Harry Eng, the Master of the “Impossible Bottle”

[function_seven]

The wooden sign is even more astonishing. Assuming that your guess is correct (sliced, inserted, glued), then the engraving on the front would need to take the kerf of the saw cut into account, or else it would show.

Wait, now that I think about it, I bet it was split rather than sawed. The photo on the site is fairly lo-res, but it does look like straight-grained wood that would split straight, and would seamlessly glue back up. And it would reduce the amount of surface work needed afterward. Each piece would key into the next.

[munificent → function_seven]

> then the engraving on the front would need to take the kerf of the saw cut into account, or else it would show.

Or just engrave the pieces after they're cut while they're clamped together.

[rkangel → function_seven]

I was assuming that the wood was steamed and then compressed. It depends what sort of wood that is.

[mattnewton → function_seven]

How would you split it without leaving tooling marks at the top though?

[function_seven → mattnewton]

Split it, then remove the tooling marks by slicing off a bit of all the slices, then insert into the bottle.

[Anarch157a → mattnewton]

Like kung fu fighters split boards. Hold it from the edge and give it a whack.