Classic SeaCraft Community  

Go Back   Classic SeaCraft Community > General Discussion > Repairs/Mods.

Notices

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 01-11-2012, 06:39 PM
Entourage Entourage is offline
Senior Member
 
Join Date: Dec 2007
Location: Fairhaven Mass
Posts: 583
Default Epoxy or Poly resin?

I am doing my transom and i am at the point where i am joining the 2 pieces of 3/4 marine ply together. I am trying to get feedback on what to use polyester resin with mat or just a 2 part epoxy resin?
Reply With Quote
  #2  
Old 01-11-2012, 07:16 PM
pelican pelican is offline
Senior Member
 
Join Date: Apr 2010
Location: cape may nj
Posts: 596
Default

epoxy resin will provide the best bond...it's best to "wet" the surfaces with the epoxy - prior to coating with a laminating mix - this assures a full bond,versus a "dry bond"...

when working with wood - epoxy is allways the best choice...
__________________
do not let common sense get in your way
Reply With Quote
  #3  
Old 01-11-2012, 07:46 PM
hermco hermco is offline
Senior Member
 
Join Date: Mar 2002
Location: Jensen Beach, FL
Posts: 827
Default

The way we did the wood core back in the day was with poly and mat, screw together with drywall screws until cured then revove the screws before installing.
Reply With Quote
  #4  
Old 01-11-2012, 07:57 PM
Entourage Entourage is offline
Senior Member
 
Join Date: Dec 2007
Location: Fairhaven Mass
Posts: 583
Default

Ok guys very good, thank you for the helpful info.
Reply With Quote
  #5  
Old 01-11-2012, 09:19 PM
gofastsandman gofastsandman is offline
Senior Member
 
Join Date: Mar 2007
Location: W.P.B. ,Fl.
Posts: 4,586
Default

Always good info Don. The flex rates need to be thought about.

Cheers,
GFS

Last edited by gofastsandman; 01-11-2012 at 09:23 PM.
Reply With Quote
  #6  
Old 01-11-2012, 09:28 PM
pelican pelican is offline
Senior Member
 
Join Date: Apr 2010
Location: cape may nj
Posts: 596
Default

big fan of using drywall screws for clamping parts together for laminating - old school - but it works...
__________________
do not let common sense get in your way
Reply With Quote
  #7  
Old 01-11-2012, 09:34 PM
hermco hermco is offline
Senior Member
 
Join Date: Mar 2002
Location: Jensen Beach, FL
Posts: 827
Default

Quote:
Originally Posted by pelican View Post
big fan of using drywall screws for clamping parts together for laminating - old school - but it works...
Drywall screws are your friend!
Reply With Quote
  #8  
Old 01-11-2012, 09:53 PM
pelican pelican is offline
Senior Member
 
Join Date: Apr 2010
Location: cape may nj
Posts: 596
Default

Quote:
Originally Posted by hermco View Post
Drywall screws are your friend!


note what's in the penske board...



penetration - it's good and bad - bad when things aren't protected...good when they are...
Attached Images
 
__________________
do not let common sense get in your way
Reply With Quote
  #9  
Old 01-11-2012, 10:00 PM
Blue_Heron Blue_Heron is offline
Senior Member
 
Join Date: Jan 2006
Location: Gator Country
Posts: 1,416
Default

Mike,
You've got the opinions of two professionals, I'll add the opinion of an amateur that's done a little research and played with both resins.

Poly is "good enough", epoxy is better. Why? For an amateur, epoxy is easier to mix, easier to work with, and has little to no odor. A guy using poly resin in an attached garage may run the whole family out of the house with styrene fumes.

Epoxy also has better secondary bond strength, is water proof while poly is only water resistant, and has the best physical characteristics of any of the laminating resins. But it's the most expensive, too.

Either will work, epoxy will work better, last longer, and cost more. So, ya pays yer money and takes yer choice.
__________________
Blue Heron Boat Works
Reinventing the wheel, one spoke at a time.
Reply With Quote
  #10  
Old 01-11-2012, 10:30 PM
bly bly is offline
Member
 
Join Date: Oct 2011
Posts: 82
Default Lets make it even harder to choose. I prefer Vinylester resin

It is a lot cheaper then epoxy. but It is more then polyester. It is water proof. Some claim more water proof then epoxy. It has better secondary bonding then polyester resin. It is thinner and wets out most glass better and easier then epoxy.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off

Forum Jump


All times are GMT -4. The time now is 10:27 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
All original content © 2003-2013 ClassicSeacraft