I have the CW3000 chiller.... absolute trash for me. With my 80w tube it goes from 21C to 31C in about 20 minutes of cutting. Unless it's -30 and I put it outside it won't cool at all. It just can't keep up with the larger tube. It's poorly designed as well. The radiator inside and the exhaust fan do not make even remotely a tight fit so I don't think much air is actually pulled through the cooling fins. I think some shrouding between the fan and the radiator would pull a lot more air through the fins and improve the efficiency quite a bit.
The normal pond pump they ship with the system and a large plastic Rubbermaid container with cold water works way better for me. When the water gets warm, just scoop a gallon or two of warm water out and replace it with cold water.
The laser cuts well at 20-24C, I start to notice less penetration above 24C and buy 30C I am getting very poor results cutting .090 PETG.
Mike
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