building fiberglass tanks

[jmonk]

I'm contemplating laying up a mold and building my own fiberglass black tank for a center bath conversion on a '59 ambassador.

First question: is this stupid?

Second question: has anyone here done it?

Fair warning, all answers will lead to infinitely more questions.

James

[Minno]

My hubby used ABS plastic to build our black and grey tanks. It's in our "Little Girl Refurb" thread in the "70's section. We've used them now for 7 years with no issues.

Kay

[jmonk]

Kay,

Thanks for the reply. I've done the smallest bit of homework and am already swaying toward ABS. I couldn't find your thread but will continue looking. I haven't tried just searching for the title in the 'search' bar.

What was the thickness of the plastic your husband used and how did he form/construct it.

I've heard a little about cutting pieces and solvent welding which sounds feasible, but if thermoforming is a diy possibility that's what would work best.

James

[Janet H]

You can have ABS custom made to your specs or you might try (as I did) going through Vintage Trailer supply. Again, outlets can be ordered to meet your needs: https://www.vintagetrailersupply.com...anks-s/218.htm

[jmonk]

Kay,

Found the thread. Holy moly what page is the waste tank on.

[Minno]

Starts at post#168, bottom of page 12 on our computer (not sure if pages correspond all the time amongst computers).
Yes, we have a looong thread! Chris wrote most of it, with me chiming in once in a while. He was the mastermind, I was the grunt. It took us 4 summers to get her road worthy and another couple years to "finish", if that can ever be said about a vintage trailer.

Kay