I will go back to the boat later today and try again to loosen the parts. 
Korbey I thought about using a torch, but honestly I'm afraid to do it in this 
area with the risk of damaging the fiberglass around, worst case cause a fire. 
I have not a lot of space to work around, so I would end up eating the bronze 
bolt instead of the aluminum plate when I should be doing the opposite.

I had the idea to drill out the bronze bolts and try to save the aluminum 
custom part. I could easily replace the bolts by SS ones. I liked the higher 
end looking bronze, but i cannot see why 316 SS would not be fine with tefgel 
between the Al and SS. Is drilling bronze tricky?

I may keep this idea in the bag, but if i go forward with more intrusive 
methods i will do it at the end of the season.

Other ideas still welcome, but I guess there is not magic trick out there.

Thank you.

Bruno Lachance
Bécassine, 33-2
New-Richmond, Qc

Envoyé de mon iPad

Le 7 juin 2021 à 11:54, Korbey Hunt via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> a écrit :

Try a MAP gas torch

Get Outlook for Android<https://aka.ms/AAb9ysg>

________________________________
From: Korbey Hunt via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Sent: Monday, June 7, 2021 7:52:40 AM
To: Stus-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Cc: Korbey Hunt <kampf2...@hotmail.com<mailto:kampf2...@hotmail.com>>
Subject: Stus-List Re: 33-2 chainplates / galvanic corrosion problem

You may need to get more aggressive with heat.  Try a MAP gas torch.

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________________________________
From: Bruno Lachance via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Sent: Monday, June 7, 2021 7:31:36 AM
To: Stus-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Cc: Bruno Lachance 
<bruno_lacha...@hotmail.com<mailto:bruno_lacha...@hotmail.com>>
Subject: Stus-List 33-2 chainplates / galvanic corrosion problem


Hi,

I want to remove my starboard side chainplate "assembly" for inspection / 
maintenance/ sealing. The 33-2 has a unique system, with a stainless steel part 
ondeck, trough bolted with bronze bolts to an aluminum block / backing plate 
inside that connects to an adjustable rod.

The problem i have is the galvanic corrosion that occured between the bronze 
blots and the alumimun backing plate. The thickness is maybe around 1/2 inch 
and everyting is stuck together. i was able to undo the nuts and i see the 
white corrosion that fused the bolts to the aluminum block.

So far I sprayed white vinegar with water, i used some heat from a heat gun, 
and a hammer with a block of hard wood. nothing happened...

Any other ideas on how to break this loose ? what are my options if i dont want 
to detroy the parts or the deck!

At this point i kind of wish i never started but at this point i'm afraid to 
get a leak that could damage the balsa.

i know i'm looking for a miracle, but i have faith in you!

Thank you.

Bruno Lachance
Bécassine, 33-2
New-Richmond, Qc

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send contribution --   https://www.paypal.me/stumurray  Thanks - Stu

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