You can however make a 6 wide board and use a 4 hinge but.
Making a barn door tracker.
As mentioned above the barn door tracker works by joining together two boards and then moving them apart at a specific rate.
Attach the piano hinge to the edge of the board with screws and screwdriver.
Assembly setting up your door tracker cut your two blocks of wood pieces into 13 x 4 pieces.
This sliding door track can be made for under 100 including wooden wheels track the ebook available in the blog post provides a full list of the tools and supplies you ll need.
One piece of wood attaches to a tripod and the other to your camera.
Making the hangers and door stops.
Mostly hand tools were used with the exception of a mitre saw to get the ends for the hinge.
We bought everything from the home depot.
Create your own barn door track hardware.
Movement is done with a drive rod connected to either a motor or a hand crank.
A single arm tracker is just a hinge with two pieces of wood.
Build a motorized barn door tracker.
The hinge joining both boards is pointed at the celestial pole and a drive bolt is turned to move the top board which counters the rotation of the earth and prevents star trails.
Two basic types of barn door trackers exist.
Two nylon locking nuts.
Four 3 1 2 inch lag bolts.
By 2 inch steel flat plates 13 99 each four 1 1 2 inch steel spacers about 6 two 4 inch pulleys 4 78 each four 1 inch fender washers.
Barn door track diy tutorial.