Piece burr puzzle 3D models

6 Piece Burr Puzzle (level 4-7)

Six Piece Diagonal Burr

12 piece Burr puzzle with pins.

Altekruse (old cross) Burr

Interrupted Slide Burr Puzzle (level 3-2-2)

Hoffman's "Nut" burr puzzle

Altekruse Variation 3

Philippe Dubois Burr Puzzle

frustration(OTL) - Rhino

Small Robot

EGG heads puzzle

Impossible puzzle