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Message
re: Anyone ever stick welded aluminum? (Boat repair/patchwork)
Posted on 3/27/19 at 12:55 pm to finchmeister08
Posted on 3/27/19 at 12:55 pm to finchmeister08
Couple things:
For that kind of patch you're gonna want to use marine 5200 as a sealant.
Two, I wouldn't feel comfortable with screws there that could vibrate loose. Use stainless nuts, bolts, and lock washers just long enough to get a good grip. With regular steel hardware you are gonna have corrosion issues in aluminum.
eta: it's probably a good thing you didn't try to weld that. You would have either burned through and been really pissed or it wouldn't have made a good bond and popped right off first time out. I wouldn't braze it either with an area that will flex, that's the one downfall of brazing is it can be brittle if not done just right. Sealant and fasteners are gonna be the best bet there.
For that kind of patch you're gonna want to use marine 5200 as a sealant.
Two, I wouldn't feel comfortable with screws there that could vibrate loose. Use stainless nuts, bolts, and lock washers just long enough to get a good grip. With regular steel hardware you are gonna have corrosion issues in aluminum.
eta: it's probably a good thing you didn't try to weld that. You would have either burned through and been really pissed or it wouldn't have made a good bond and popped right off first time out. I wouldn't braze it either with an area that will flex, that's the one downfall of brazing is it can be brittle if not done just right. Sealant and fasteners are gonna be the best bet there.
This post was edited on 3/27/19 at 12:58 pm
2
Posted on 3/27/19 at 1:01 pm to TheDrunkenTigah
I would use aluminum rivets because stainless steel ones will corrode the aluminum over time.
The other option is to use stainless through bolts and use tef gel & plastic washers to prevent the corrosion.
The other option is to use stainless through bolts and use tef gel & plastic washers to prevent the corrosion.
Posted on 3/27/19 at 1:02 pm to TheDrunkenTigah
quote:
marine 5200
he's going with flex seal.
why can't i tell my old man anything?
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