Fiberglassing Attempt - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 11 Old 05-25-2013 Thread Starter
Senior Member
 
asdf38's Avatar
 
Join Date: Jul 2010
Posts: 772
Thanks: 1
Thanked 9 Times in 9 Posts
Rep Power: 6
 
Fiberglassing Attempt

Ok so my cockpit floor doubles as the engine cover. Because it gets the most traffic on the boat, and probably because it flexes quite a bit, the paint looked particularly bad. Because of this, and the convinience of bringing it home, I decided to take it back for refinishing.

At the same time, I thought"why not add a layer of glass. I had some leftover 3m fiberglass cloth from home depot, and I thought the panel could benefit from additional stregth. The original construction was pretty poor - the cored section was off center and had a large inexplicable hole cut out of it, as if they had mis-cut when installing the inspection plate, or used scrap wood.

So I sanded down underside of the panel to remove the grey paint(?) and prepped with acitone, painted on epoxy, and laid down the cloth and painted on another layer of epoxy.

Ok so the result is interesting. I'm not sure what I expected but the result isn't exactly like fiberglass I'm used too. It basically feels exactly like what it is - a layer of glass cloth glued to the surface. Every slight wrinkle in the cloth is visible and places where the resin was especially thick look exactly like that - like small pools of water.

So at this point what should I do? It seems like sanding would cut the layers of glass that I just laid down, painting would be fine but I don't really see the point in painting the underside of the engine panel.

Note that this was mostly an experiment, not strictly necessary, and it's on the underside of the panel which isn't visible unless it's removed.

So did I just do a bad job applying the glass, or are there typically finishing steps that I should do now?

Last edited by asdf38; 05-29-2013 at 05:47 PM.
asdf38 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 11 Old 05-25-2013
me at 67!
 
deniseO30's Avatar
 
Join Date: Nov 2006
Location: Bristol pa
Posts: 6,925
Thanks: 55
Thanked 125 Times in 114 Posts
Rep Power: 10
   
Re: Fiberglassing Attempt

laying glass down on a horizontal surface is very easy. You basically started off right.. but should use a plastic squeegee, and scape the excess off into a cup. Then, when the wetted out cloth kicks but is still tacky, give it another coat... let that kick.. then another.. it takes about 3-5 coats to fill the weave completely. If you used fast hardeners you may have to wash off the "blush" and sand between coats if you let it harden completely.

I just realized you did the under side? Well it's the same job but really messy! the stuff will run and drip down your arms and down to what ever is below! Now that the basic cloth is on you can thicken the fill coats so it doesn't drip as much. Did the flexing stop?

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


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

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


My boat is sold!

Last edited by deniseO30; 05-25-2013 at 12:06 PM. Reason: oops
deniseO30 is offline  
Quote Quick Reply Share with Facebook
post #3 of 11 Old 05-25-2013
Senior Member
 
Join Date: Jan 2011
Posts: 763
Thanks: 0
Thanked 19 Times in 19 Posts
Rep Power: 5
 
Re: Fiberglassing Attempt

Use a high build epoxy primer like WR155, great stuff. It fills in the glass weave and almost looks like gelcoat if you put on enough.
Frogwatch is offline  
Quote Quick Reply Share with Facebook
post #4 of 11 Old 05-29-2013
I don't discuss my member
 
zz4gta's Avatar
 
Join Date: Aug 2007
Location: Chesapeake Bay
Posts: 2,530
Thanks: 0
Thanked 31 Times in 31 Posts
Rep Power: 8
 
Re: Fiberglassing Attempt

Its the inside of the engine cover right? Leave it, go sailing.

For future reference, you want to wet out the cloth before you lay it on the base. Then squeegie out the excess, maybe add a little extra and be done. You can add fairing compound if you'd like, then spend more time fairing, then painting, etc. But I only waste that kinda time with something that'll be seen.

Merit 25 # 764 "Audrey"
zz4gta is offline  
Quote Quick Reply Share with Facebook
post #5 of 11 Old 05-29-2013 Thread Starter
Senior Member
 
asdf38's Avatar
 
Join Date: Jul 2010
Posts: 772
Thanks: 1
Thanked 9 Times in 9 Posts
Rep Power: 6
 
Re: Fiberglassing Attempt

Thanks for the help. Sounds like the squeegie is what I missed the most. Oh well, the job served it's purpose - a little strength was added and now I've learned a couple lessons.
asdf38 is offline  
Quote Quick Reply Share with Facebook
post #6 of 11 Old 05-29-2013
Senior Member
 
chucklesR's Avatar
 
Join Date: Sep 2007
Location: Pasadena Md - Magothy side
Posts: 5,979
Thanks: 10
Thanked 31 Times in 31 Posts
Rep Power: 10
     
Re: Fiberglassing Attempt

Yep, you missed the sqeeqie, that's why you have pools of resin.

Lessons learned are opportunities earned.
chucklesR is offline  
Quote Quick Reply Share with Facebook
post #7 of 11 Old 05-29-2013
Member
 
pauloman's Avatar
 
Join Date: Dec 2012
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Fiberglassing Attempt

the strength comes from the cloth, not the epoxy resin. Use a non blushing epoxy and a squeegee - fill any exposed weave with thickened epoxy or ext. putty. If putty, then seal with a thin coat of solvent thinned epoxy.
pauloman is offline  
Quote Quick Reply Share with Facebook
post #8 of 11 Old 05-29-2013
Senior Member
 
Unkle Toad's Avatar
 
Join Date: May 2013
Location: South Puget Sound
Posts: 125
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 3
 
Re: Fiberglassing Attempt

oo ... thank you this is exacctly the kind of thread I love.. now I know the squeege trick before I even own my boat.
Unkle Toad is offline  
Quote Quick Reply Share with Facebook
post #9 of 11 Old 05-29-2013
Senior Member
 
bljones's Avatar
 
Join Date: Oct 2008
Location: South Coast Ontario
Posts: 8,469
Thanks: 35
Thanked 90 Times in 80 Posts
Rep Power: 8
   
Re: Fiberglassing Attempt

Denise has it spot on, as usual. wet out, squeegee, repeat, repeat, until the weave of the cloth is entirely filled.

It's 5 o'clock somewhere:


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bljones is offline  
Quote Quick Reply Share with Facebook
post #10 of 11 Old 05-29-2013
me at 67!
 
deniseO30's Avatar
 
Join Date: Nov 2006
Location: Bristol pa
Posts: 6,925
Thanks: 55
Thanked 125 Times in 114 Posts
Rep Power: 10
   
Re: Fiberglassing Attempt

when my son and I were building cedar strip canoes we would glass and epoxy the outside in an overnight marathon if we had to. flat and concave surfaces are the easiest. concave surfaces are a problem as the epoxy keeps running down to the bottom until it kicks. upside down.. don't even ask me to try LOL!

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


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

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


My boat is sold!
deniseO30 is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Fiberglassing Over Hull Deck joint? snider General Discussion (sailing related) 5 12-08-2012 06:23 AM
Tips for fiberglassing wood base inside hull josrulz Gear & Maintenance 15 11-07-2011 02:51 AM
Fiberglassing Over Plywood jimmoser Gear & Maintenance 7 10-02-2011 03:37 AM
Fiberglassing diesel tank into keel kjsailingSpring Gear & Maintenance 8 02-24-2011 05:02 PM
Keel fiberglassing/hit some rocks? RichmondVI Gear & Maintenance 7 06-25-2007 12:12 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome