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Door 5 - YouTube

Blue crank, green conrod (door panel) and orange roller create crank slider mechanism (to some extent, because the roller can be replaced with a slider).

Coulisse mechanism 3 - YouTube

a = d: the coulisse regularly revolves. Its velocity is half of the crank one. a: crank length; d: axle distance

Cover for basement entrance 4 - YouTube

Yellow frame reciprocates linearly under action of grey cylinder. Thanks to parallelogram mechanism of two orange rockers, the green cover can raise up to le.

Rack-Rack transmission 1 - YouTube

Rack-Rack transmission 1 - YouTube

On-the-mark circular saw jig.  Try your hand with a jig that delivers accuracy for left- or right-bladed saws.

On-the-mark circ-saw jig. Try your hand with a jig that delivers accuracy for left- or right-bladed saws.

180 deg concealed hinge - YouTube

This 6 bar mechanism enables the hinge to rotate 180 deg. Green, blue and violet bars create a paralle.

Sine mechanism 1 - YouTube

Relation between the rotation angle of the crank and the position of the green slider is a sinus function.

Torggler door 2 - YouTube

An application of 4 bar linkage. Friction in revolute joints must be large enough, otherwise the mechanism will move from open or closed positions due to the.

Telescopic sliding gate - YouTube

A roller cable mechanism is used. A point on lower part of the cable is fixed with the grounded post. A point on upper part of the cable is fixed with the bl.

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