centerboard repair using bondo - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 12-20-2011
Member
 
Join Date: Oct 2011
Location: westbrook CT
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
priceless9192 is on a distinguished road
centerboard repair using bondo

I recently bought a 17 foot boat with a iron swing centerboard. The boat was sitting for many years and the centerboard was rusted up inside the boat. Upon removal I noticed large flakes of rust coming off of it, so I flaked it all off and sanded it roughly to get it back to raw iron. I am on a super tight budget and I plan to use bondo to make up the missing width. I just need advice whether this is going to work underwater. Could someone give me some guidance?
Reply With Quote Share with Facebook
  #2  
Old 12-20-2011
Maine Sail's Avatar
Senior Member
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,267
Thanks: 9
Thanked 112 Times in 82 Posts
Rep Power: 15
Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice
Bondo tends to absorb water. You'd be better off with a vinylester putty or make your own mix with cabosil, milled fibers and epoxy. You could make the same cabosil/milled fibers putty with polyester resin too..
__________________
______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




© Images In Posts Property of Compass Marine Inc.


Reply With Quote Share with Facebook
  #3  
Old 12-20-2011
celenoglu's Avatar
Senior Member
 
Join Date: Dec 2008
Posts: 539
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
celenoglu is on a distinguished road
Epoy is the best product for underwater. Bondo also has a epoxy putty. I would have used epoxy + glass dust to prepeare a putty. First apply clear epoxy then use the putty.
Reply With Quote Share with Facebook
  #4  
Old 12-20-2011
Member
 
Join Date: Apr 2010
Location: Orchard Park, NY
Posts: 76
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 5
FDR14127 is on a distinguished road
Bondo makes a marine product which I have used on my keel in the past. I haven't noticed anything since I applied it maybe five years ago. When I go to the yard tomorrow I will give it a look and let you know if it has changed.
__________________
s/v Nemesis
Niagara on the Lake Sailing Cub


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #5  
Old 12-20-2011
Barquito's Avatar
Barquito
 
Join Date: Dec 2007
Location: Madison, WI
Posts: 1,906
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 7
Barquito is on a distinguished road
The missing width isn't a structural part, is it? If not, you could just paint it, and be a fraction of knot slower.
Reply With Quote Share with Facebook
  #6  
Old 12-20-2011
Senior Member
 
Join Date: Jul 2007
Location: Philadelphia
Posts: 809
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 8
Ulladh is on a distinguished road
Clean off all the loose rust and paint with a rust converter.

Mar-Hyde(R) One-Step(R) Rust Converter Primer Sealer

3M also makes marine bono, and resins for other repackaged/renamed coatings.
__________________
1970 Havsfidra 20 by Fisksatra
On the Delaware River at Fox Grove Marina Essington PA
Reply With Quote Share with Facebook
  #7  
Old 12-20-2011
Member
 
Join Date: Oct 2011
Location: westbrook CT
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
priceless9192 is on a distinguished road
i think the rust converter is out of the question now that i have grinded the rust off with a few hours and a wire wheel on a drill. i will look into the bondo marine product. and no it is not structural but i would like to have it back to original size to sail fast
Reply With Quote Share with Facebook
  #8  
Old 12-20-2011
Member
 
Join Date: May 2011
Location: San Francisco
Posts: 82
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
sfchallenger is on a distinguished road
Sounds like what you are looking for is a fairing compound. I'd use West Systems - they make two part epoxys with various additives to add thickness/give the product a heavier consistancy (the resin by itself is quite runny). You can apply it/work it much as you would bondo, it behaves similarly in terms of how it 'gells' when it is going off.
__________________
Sailing a '74 Challenger 40' Ketch rig out of San Francisco
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bondo Glass??? 4cylindersoffury Gear & Maintenance 24 09-05-2010 03:49 PM
centerboard jebsailor Gear & Maintenance 1 09-02-2009 08:45 AM
Centerboard niktash Mariner 1 05-25-2009 01:24 PM
how is bondo for boats? Captain_Rick General Discussion (sailing related) 8 03-26-2007 05:51 PM
O''Day 25 centerboard Jocelyn(Nipan2) Gear & Maintenance 1 01-22-2005 09:17 PM


All times are GMT -4. The time now is 08:24 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.