webcraft
Well-Known Member
So maybe the use of JBWeld is not a bad idea after all??
(As my ability to enclose the entire unit in fibreglass is non -existent)
Cleaning off JBWeld from round a through-hull (on the inside)
- Thread starter webcraft
- Start date
So maybe the use of JBWeld is not a bad idea after all??
(As my ability to enclose the entire unit in fibreglass is non -existent)
alahol2
Well-Known Member
As I mentioned elsewhere, epoxy fairing compound is as easy to use and finish neatly. It's also an order of magnitude less hard than JBWeld.
Poignard
Well-Known Member
I also wondered what this lump of GRP was for and your explanation is plausible.
It certainly isn't needed for keeping the water out. The silicon sealant does that.
I thought it might be to protect against the tube being broken off from the inside .
Anyway, I followed NASA's instructions but I couldn't see any need to use epoxy, and NASA doesn't specify epoxy, so I used some cheap polyester filler from a car accessory shops.
That was in 2001 and it was still in place, doing whatever it was supposed to do, when I sold my boat last year.
PaulRainbow
Well-Known Member
As previously mentioned, it's likely the GRP is to keep the transducer in place if the outer flange sheers, something has been know to happen.
I any case, P40 (suggested by the OP) is polyester resin mixed with chopped strand, which makes it GRP. I see no reason not to use it.
I any case, P40 (suggested by the OP) is polyester resin mixed with chopped strand, which makes it GRP. I see no reason not to use it.
