Backyard Aquaponics
A place to discuss aquaponics

needs flux and by plumbing solder i assume you mean silver solder, not the tin/lead soft solder

Pop rivets and roof and gutter silicone

or that.

no but epoxy works great.

I meant silver solder - modern water pipe solder. Not Pb/Sn, not aircon high temp stuff. I expect it is as much about the right flux as the solder itself? I'm thinking of something that will be under maybe 4m of pressure, not sure that roof silicone will hold.

Anyway, let's see how we go with this fibreglass tray thing.

NJH, i actually think the aircon silver solder has a lower melting point than the potable water stuff A/c silver i think has cadmium in it, lowers melting point, make it flow better, and is a heavy metal

regardless, you'll need a decent torch to use it, B sell the cans and torch heads, cans about $20 heads vary.......... i use the yellow bottle MAPP gas, will be worth it if you want a good job, burns hotter than butane and the MAPP head has a longer "mixer" allows it to mix more gas and air /s . DONT buy the pissy little heads just for butane cans. Or you can just borrow an oxy. Trick is to get the piece you're welding to temp before you attempt to solder.

Yeah, I just redid our bathroom with an LPG jobbie, and it took a fair amount of time to get to temp. Mapp gas was the key! $80 from B, including gass.

The other thing I discovered is that once the solder gets to a certain temp it unalloys somehow and the melting point goes up (making it hard to fix a dud joint :grump:)

It's so magical when it works though! I even soldered the threaded bits coming out for the vanity rather than the old teflon tape. Works a treat, no mucking around with plumbing paste and tape.

LOL very true indeed, i thought it might be the lighter lower melting point metals gassing off, but could be an alloy thing. it ALWAYS happend on a 3/4 inch elbow, around the back part you cant see, thats close to a piece of wood, no matter how much heat you pump into the bastard then it VERY hard to do!

Nup, can't use that...that's all Monya's got left to wash the family in

How did you know? There is a lovely char on the weatherboards...

thats what broken bits of cemet sheet are for to put behind the pipe. and you'd be surprise how far past the flam tip the heat is thrown...............theres a few heating ducts with holes melted in them that can testify

Rotfl! We used to do death rays on al cans with the oxy torch

-ing thing won't fit...

What's the best way to support half blue barrels? How do people organise the drain?