Filters
Electrihedron Puzzle - Doug Engel

Interlocking

Designer: Doug Engel
Maker: General Symmetrics, Inc (Doug Engel)

Rhombi Box Puzzle - Doug Engel

Put-together / Wood

Designer: Doug Engel
Maker: General Symmetrics, Inc (Doug Engel)

Tube Box Puzzle  - Doug Engel

Put-together / Wood

Designer: Doug Engel
Maker: General Symmetrics, Inc (Doug Engel)

Cuboctobox - Doug Engel

Put-together / Wood

Designer: Doug Engel
Maker: General Symmetrics, Inc (Doug Engel)

Rocti Box Puzzle - Doug Engel

Put-together / Wood

Designer: Doug Engel
Maker: General Symmetrics, Inc (Doug Engel)

Tetra Star Box - Doug Engel

Put-together / Wood

Designer: Doug Engel
Maker: General Symmetrics, Inc (Doug Engel)