Plastic knot puzzle

dimensions corrected and scaled down. With my settings, each part took 10-15 minutes to print.

A three piece puzzle, originally intended to be cut from wood, now in printable format. Each piece is ~ 2x3x0.5cm

source: http://www.wood-line.de/G/G000801.htm (translated: http://is.gd/4jJ1E)

edit: Cleaned up the STL a bit. Solid editor in AoI is a wonderful thing.