--- In
Homebrew_PCBs@yahoogroups.com, "nathan_h_tna" <nathan_h_tna@...> wrote:
>
> I'm sure this has come up before, but I'd like to build a cheap etching tank and wanted to get some advice before I actually do it.
>
> I was thinking of buying a good sized sheet of fairly thin acrylic from Lowes or Home Depot, cutting it up into two big pieces for the front and back of the tank, two tall but narrow pieces for the sides, and then gluing it all together with some of that plastic weld stuff.
>
> The idea is that the tank would be really narrow (maybe 0.2") so it wouldn't take much etchant to fill it up. I was also thinking of getting one of those "air bubble devices" (I don't know what they're actually called!) from a petstore and gluing it to the bottom of the tank with the end of the hose sealed off and a bunch of small holes poked in it to agitate the etchant. It might also be possible to put a lid on the tank and putting the air intake on the bubbler and putting it inside the tank so that the fumes aren't constantly being expelled from the tank.
>
> What are your thoughts?
>Hi I built mine from a fiberglass car repair kit. make a small plug from MDF, cover it in varnish then once dry give it several coats of PVA glue,cover in resin and fiberglass, when its dry soak in water to soften the PVA and pull the fiberglass tank off, make a wooden box to sit the tank in then fill the void with spray in foam, yhis also helps to insulate the tank, atach a small aquarium pump to the box and glue a perforated hose inside the tank.