I always wanted a laser spirograph and the many Instructables on this site have helped me with this. The only thing missing for me in other Instructables: a nice enclosure.
I had all the parts already in stock and most items are recycled from old appliances.
MDF (surplus from other projects)
varnish (surplus of another project)
three twelve volt fans (old computer)
two power adapters (broken radio (12volt) and Walkman (3V))
on / off switch (from old computer)
main power cable and socket (from old computer)
red laser (from broken level)
mirror (old copy-machine)
piece of glass (old copy-machine)
the only thing I've bought are three potentiometers with matching knobs (2,5 euros = 3,5 USD)
I started by making the laser spirograph itself
The process is simple:
· Glue the mirrors to the fans whit on one side a thick piece of paper, this gives the angle.
· Connect the negatives of the fans to the negative of the 12 volt adapter
· Connect the positives of each fan to the potentiometers, split the positive from the adapter in three and connect them to the potentiometer.
· Connect the 3 volt adapter to the laser
Ones I had this lay out I made the measurements for the enclosure
On the rear side of the enclosure I made vent holes, for ventilation but also because it creates a retro look.
After putting everything together I varnished the enclosure whit dark wood varnish.
You can create a real wooden effect by the way that you varnish the first layer. (You will have to push the paint brush a little harder and make some slopes. )
Note: i made the mistake not to varnish the inside
The pictures of the laser in action aren’t that great because I couldn’t adjust the shutter speed of my camera.