Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Construction > Boatbuilding > Wooden Boat Building and Restoration
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 09-05-2009, 02:27 PM
missinginaction missinginaction is offline
Senior Member
 
Join Date: Aug 2007
Rep: 361 Posts: 297
Location: new york
A fairing question

Hi folks. I was placing 6 oz cloth over the douglas fir deck on my old Silverton this morning. I was called away by an emergency and by the time I hurried back my resin had kicked off and I was unable to cut the cloth, peal it up and make a flat seam.

So I have a couple of seams in my fordeck that are going to need fairing. I have a large tub of microballoons but I've never faired an area this large before. If I mix up say a quart of resin to roll onto this deck how much fairing material would you mix in? Am I looking for ketchup consistency, mayonaise, or thinner? I'd like to get the seams where the cloth is doubled up as smooth as possible.

MIA
Reply With Quote
  #2  
Old 09-05-2009, 02:51 PM
PAR's Avatar
PAR PAR is offline
Yacht Designer & Builder
 
Join Date: Nov 2003
Rep: 2891 Posts: 8,798
Location: Eustis, FL
Before you mix up the goo, get out the grinder and make sure you don't have high spots.

I usually use more then just micro balloons, even in a light weight fairing mixture.

How much filler, well who knows really, you just add and mix until you get the consistency you want. You can work out formulas and ratios all you want, but temperature differences and resin viscosity will toss most of these measurement rules out the window. In other words, a mixture that was perfect the day before with two cups of filler, maybe runny the following day, with the same 2 cups of filler, from environmental differences.

You wouldn't work with that much epoxy at once (a quart) as this is a lot of fairing to get applied and smoothed out before it kicks off. Work smaller batches so you have some control.

Consistency depends on the surface, what you're filling, you're skill level, etc. Assuming your foredeck has some crown to it, you'll want loose ketchup, so it doesn't sag. Since the crown is probably slight, running and sagging will not be a big issue so you can make it fairly loose.

The big mistake is to apply too much thinking you'll just sand it down smooth, trust me this isn't the way. Light (thin) coats and a "sneak up on it" approach is much better for the novice fairer.

Work small batches Grasshopper, you'll get there.
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fiberglass Fairing Material Question Hellkell Fiberglass and Composite Boat Building 3 08-25-2007 08:46 PM
Fairing and glassing Helmsman Wooden Boat Building and Restoration 2 01-02-2007 10:25 PM
Fairing bobsyachts Boatbuilding 6 07-08-2006 02:42 PM
Fairing Smircio Software 12 12-10-2005 09:14 AM
Fairing in Rhino shu Software 13 01-06-2004 10:38 AM


All times are GMT -5. The time now is 02:34 AM.


Powered by: vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2012 Boat Design Net