broken diffusion stone

[neal.p]

Heya,
I boiled my diffusion stone a little too long and it separated. Any ideas on putting it back together...it just slides off at the moment.

 

[Moog]

maybe you could try wrapping some stainless locking wire round a few times, and twisting tight.
It might give it enough bite.

 

[MHB]

I doubt that a twitch will work, very hard to compress sintered stainless steel.
One of the thread sealing compounds would be worth a go, I use a fair bit of Loctite 577, its about the only one rated for potable water. Will cope with temperatures over 100oC...
I would lightly sand both surfaces to get rid of any existing glue, apply a thin coating to both sides and press together, might be worth hot curing to get maximum strength.
Mind you a tube of 577 is about the same price as a new air stone, if you haven't got any use for the rest of the tube you might be better off just ordering a new one.
Mark

 

[neal.p]

Thanks Moog and MHB. Yes, I can buy 2 stones for the price of the glue!