Saw a glass vase at Cost Plus World Store that can serve as an etchant tank. Its interior dimensions are 1 3/4 x 7 3/8 inches and 14 1/2 inches high. The price is $24.95 and the product SKU is 349531. They refer to it as a "vase, tall, flat, rectangular". It is made of rather thick glass and is seamless with a heavy glass base. When not being used to etch PCBs, put flowers in it.
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Glass Etchant Tank
2005-03-31 by Radra