Topic: My Old Projector

[Lazerjock]

I thought with all the projector construction going on I would show off my old projector.

I built this about 10 years ago. Every hole in the bread board was drilled and tapped by hand.
I tought myself how to weld aluminum using my MIG for the housing.
The lids were bent by parking my car on a weight lifting bar over the aluminum plate then using leg muscle lifting the plate until I got the radius I needed. Can you say hernia?

It was designed to sit between the audience and screen. One side projected graphics and the other beams. I used the waste from the PCAOM steered through to the other side for the beam effects.

It had a 300mw American air cooled argon and 50 mw HeNe, General Scanning G120 scanners, a PCAOM, and a Universal Geometric Corrector.

It weighed 70 Lbs. and was built to just fit in my car at the time (Mitsubishi Eclipse).

There was a lot of room to expand for the future.

[Lazerjock]

More pictures.

[Lazerjock]

 Last pic.

[Fanny Pack]

That's a big projector.  Looks well constructed.

Let's talk about aluminum MIG welding.  Did you buy a special wire reel for it?  I have a MIG and there have been times when welding aluminum would have been awesome.  Is it harder than steel?

[BlinkenLights]

http://www.lincolnelectric.com/knowledge/articles/content/compactmig.asp

[Lazerjock]

The link Blinkinlights posted is right on. It takes a lot of practice to learn and don't expect it to be perfect. I used the build up method. Weld a crap bead since it is the best I could do then grind it down till it looks good, repeat.

[Absolom]

So, do you still have it stored away somewhere?  Still have that TurboTrack?? :

[Lazerjock]

I have 1 Turbo Track left. I plan to use it in my new projector, but it has some problems. It has a short across all of the quad op amps on one channel. You would think a short would be easy to find, but I'm beating my head against the wall on this one.

[Absolom]

Might want to try Steve aka MixedGas over at PL.  That guy knows a lot of shit!

Too bad, I am still trying to get my hands on one.  My G-120s are choking with the amps I have now.  I would even be happy with a LaserAritstry if someone had one.