How to Build Your First Surfboard
by Stephen Pirsch

HOME
Introduction
Design
Stands and Blocks
Shaping
Polystyrene
Epoxy
Glassing
Hot coat
Fins
Sanding
Art Work
Gloss Coat
Leash Plug
Books
Material Lists
Resin Amounts
Equipment List
Misconceptions
Tips
Sm Wave Design
Research
Videos
Helpful Links



This is your site. It is not biased by any direct advertising and no money is accepted for any links shown. It is made for you and supported by you.

PLEASE DONATE!

 

HALL OF FAME
~~~~~~~~~~~~~~~

Thanks to the users below for keeping this site alive and unbiased with their donations.

Mark Sadler
Kevin Kuzma
Mark Griffith
Kirra Oredson
Logan Leitch
Joyce Shingler
Alex Bayer
Greg Bayer
Ian Pirsch
David Shell
Fab Ordonez
Tom Walczewski
Anthony Rynicke
Peter Young
Lori Hartline
Terence Harper
Robert Campbell
Thomas Gustafson
Michael Filanowski
John Gaudette
Philip Meagher
Russell Simms
Randall Kirkpatrick
Calvin Arnold
Preston Renbarger
Mark Schreiter
Mike Sheldrake
Ritchie Ginther
George Young
Michael Simbulan
Bradley Saviello
Poolguy Network
Elan Yaari
Mathieu Corbeil
Sergey Terentev
Anthony Azcona
Hamish Eassie
David Merga
Spencer Ward
.


POLYESTER, OR EPOXY RESIN AMOUNTS-(9' BOARD) PLUS  POLYESTER CATALYST RATIOS

Catalyst, and wax amounts are for polyester only - reduce catalyst (polyester only) amounts if temperature is above 80 degrees F, and do a test batch first.  Do not start an epoxy lamination at over 80 degrees F., unless using a slow hardener.  Cloth amounts are: 1-8oz oz top & bot. w/1-8oz deck patch.

Laminate coat
Bot.- 40oz=12cc cat
Top- 54 oz=16cc cat

Hot coat
Bot.- 18oz=5cc cat & 11cc wax
Top- 20oz=6cc cat &12cc wax

Gloss coat
Bot.- 18oz = 5cc cat. & 11cc wax
Top- 20oz = 6cc cat. & 12cc wax

Fin box
3 oz = 1cc cat. & 2cc wax

Catalyst percentages    .5% .75% 1% 1.5% 2%
Pint=16oz resin  add     3cc  4cc  5cc 7cc    9cc  catalyst
Quart=32oz resin  add  5cc  7cc  9cc 14cc  18cc catalyst

Helpful Equivalents
1cc=15drops
1oz=30cc
1cup=8oz
1pint=16oz
1quart=32oz
1gallon=128oz

Helpful Notes
10cc styrene wax (about 2%) for each pint of laminating resin (to make it dry non-tacky-hot coat and gloss coat only).  Maximum 1oz polyester type pigment/1quart resin (will inhibit hardening of polyester resin at 1oz/1pint).  Note:  Some epoxy based pigments will work in epoxy at a !0% ratio.

How To Figure Catalyst Amounts When You Have An Odd Resin Amount. 

  1. Choose the % of catalyst.  Note:  1% is a good starting place.
  2. Convert the resin amount from oz. to cc. by multiplying oz. times 30.  Example:  20oz. x 30 = 600cc. 
  3. Multiply the resin amount in cc's times 1% .  Example:  600cc x 1% (.01) =  6cc catalyst.

How To Figure Epoxy/Hardener Amounts At A 2/1 Ratio.

  1. Choose an amount divisible by 3.  Example:  You need 44oz. total resin.  44 + 1 = 45. 
  2. Divide by 3.  45 divided by 3 = 15.  15 is the hardener amount. 
  3. Multiply the hardener amount by 2.  15 x 2 = 30.  30 is the epoxy resin amount. 
  4. Add/mix the hardener and epoxy together for the total needed resin.  30 + 15 = 45.

[Next]

 
2003 by Stephen Pirsch, All Rights Reserved.

Site Meter