artograph or opaque projector optics

[ancorp]

ancorp

"put in the glycol todaym waiting for the silicone to dry"

Is that the antifreeze type stuff? I had an old sony a few years ago that was kind of dim. I read that it was alge like stuff living in the coolant. It looked too complicated and I was afraid I might spill it and my cat would drink it and then I'd have a dead cat. (ok I'm a big baby) Anyway, is that what you were talking about?

Yea, the glycol is the cooling liquid. Cost me about $20 US for a 500ml bottle, and it was barely enough for one CRT out of the 3!!! Ripoff... The silicone never did dry (wtf???😕 ), but the liquid doesnt leak, so im setting it up already. Its messed up plenty... will probably take hours, and perhaps is even impossible to setup all the way (maybe something is wrong with the convergeance board, the board with many many many knobs....)

 

[TaskMaster]

ancorp

"put in the glycol todaym waiting for the silicone to dry"

Is that the antifreeze type stuff? I had an old sony a few years ago that was kind of dim. I read that it was alge like stuff living in the coolant. It looked too complicated and I was afraid I might spill it and my cat would drink it and then I'd have a dead cat. (ok I'm a big baby) Anyway, is that what you were talking about?

Ethylene Glycol is poisonous and not environmentally friendly, however Propylene Glycol is 'relatively' safe and non-toxic. At least it is not the hazard to pets that standard anti-freeze (ethylene glycol) is.

 

[ancorp]

From what I was told, Ethylene glycol has a different refractive index. The other glycol should have the tube needed to be driven higher (i.e more brightness) and the edge focus will be off, so will need to be corrected with the lens focus. If they were the same, but the Ethylene was poisonous, I bet CRT makers would use the other one...