Hints for the Octamaze puzzle

Hint #1: What to do first with the pieces

The tabs on the triangles fit neatly into the slots on others, creating a three-dimensional figure. What figure consists of eight equilateral triangles?

That figure can be made with these triangles in only one way, if you keep the etchings visible on the outside, so it may take you a little while to find the arrangement that works.

Hint #2: How to fit the triangles together