Pack of 2 with grub screws and key.
Diameter: 26.5mm
Bore: 4mm. Learn More

Ivan Law. Gives comprehensive information on
gear-cutting. Explanations and reasons for all
conventional types of gears are clearly set out,
with useful tables and machinery techniques,
to form an invaluable reference work for
anyone dealing with machinery. Learn More

Size : 14.3mm
Teeth : 20 Learn More

348 parts
Finished size 350 x 95 x 130mm Learn More

The Butterfly is not a static stand model, but an animated kinetic sculpture. Each of its details designed to make sure it fits its own place and plays its own part in the workings of this outstanding mechanism. Equipped with a rubber-band motor, the mechanical automaton moves imitating the flutter of a butterfly with no external power source or batteries.
As with every model in the Ugears family, The Butterfly requires no glue or additional tools to assemble. You will build your new model out of ready-made details that come precisely pre-cut in high quality natural plywood boards. Slightly pushed, the details easily pop out of the board.
The Butterfly sits on a flower-shaped platform. The elastic support slightly bounces the model, making its movements more realistic so that The Butterfly dances and flutters in the air approaching the flower.
Model Size: 290 x 550 x 400mm
Number of components: 161
Estimated time of assembly: 2 hours Learn More

248 parts
Finished size 370 x 170 x 270mm Learn More

Model size: 13,8*18,9*8,7 in (350*485*220 mm)

Package size: 14,6*6,7*2 in (378*170*50 mm)

Number of components: 585

Estimated time of assembly: 12-15 hours Learn More

Model size: 15 х 5,1 х 6,7 in (380 х 135 х 178 mm)

Package size: 14,6 х 6.7 х 2 in (378 х 170 х 50 mm)

Number of components: 541

Estimated time of assembly: 8-9 hours Learn More

Model size: 11.8 x 5.1 x 3.9 in (305 х 130 х 100 mm)

Package size: 14.6 x 6.7 x 1.6 in (370 х 170 х 420 mm)

Number of components: 437

Estimated time of assembly: 6-7 hours Learn More