Most commercial etchers are made from Polypropylene (which can withstand higher temperatures than PVC) and they're usually welded together. There's at least one brand I've seen whose tank is molded out of a single sheet of Polypropylene - so the tank won't leak. Most have see-thru Lexan (or a similar plastic) top covers.
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Re: sprayer tank construction
2005-03-25 by fab4442003