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Be careful here. Are we talking about an industrial or a commercial appication? Chilled water pump sounds like its part of a piping system connected for building space conditioning (offfices, classrooms, etc). High pump velocities can sometimes cause objectionable piping noise. Although you can...

Thank you all for your help. Just today I asked a representative of DeWalt (Tools) if I could use some sort of saw; they recommended a circular saw with a high torgue motor and carbide blade. It would work best if I used low RPMs. The blade looked like it was made of the same material as a chop...

Can anyone tell me what an entry level laser cutter costs? WHat is the smallest unit availalbe. I am looking to cut 10 ga mild steel.

FuelCellMan, did you have any luck with your last posted question? I accumulated a bunch of information and would be happy to fwd to you if you update your posting. Some prototype installations are out there, notably the ones from the Siemens-Westinghouse partnership. I think these are solid...

PS Is anyone out there aware of any macroeconomic analysis that has been applied to fuel cell use and proliferation?

There are larger issues involved here. Its not just the cost to produec/convert energy, its also the cost of TRANSPORT. Theoretically, the hydrogen fuel cell's low fuel to weight ratio offers a savings in itself (not having to lug around tons of fuel). Hydrogen packs a relatively large energy...

I need to make a rectangular cutout 10.3" x 13.8" in a 10 ga. mild steel plate. Does anyone know the best way to do this (other than "burning" it out)? I was told that I could use a high speed circular saw w/ a "diamond" (??) blade. Any suggestions would be helpful.

Best way to calc transformer capacity (assuming it is a MACHING TOOL transformer) is VA= SQRT((VA inrush * VA inrush) +(VA sealed *VA sealed))