I have my first homegrown blank waiting for shaping. Before I start in earnest, I wanted to compile a bunch of details on one or two pages that I could have on the wall for guidelines. I’ve had more single fin boards than anything else and never worked with epoxy before, so much of this is what I have culled from a lot of reading here.Hopefully the tables will format ok, so its readable.
Please post up if you see errors in this data, so I can correct this info.
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**Epoxy Resin** mix 2:1
Add F ratio 1cc /1 oz hardener: (~30cc’s / oz)
Laminating resin amounts:
Board length deck resin bottom resin add. F
----------------- -------------- ----------------- -------
< 6’ 12-15 9-12 ~1/2oz
6-7’ 15-18 12-15 ~1/2oz
7-8’ 21-24 18-21 ~3/4oz
8-9’ 27-33 24-27 ~1oz
Hotcoat resin amounts:
A little more than 1oz / ft. & dbl the add. F
6’ 7oz 7oz ~1/2 oz
7’ 9oz 9oz ~3/4oz
8’ 12oz 12oz ~1oz
9’ 15oz 15oz ~1oz
**Fin Placement**
** **
**Single fin:**
Box - ~6” from end of tail. Side bites - 11-12” up, 1.25 from rail, toe like thruster.
**Truster:**
Center fin: 3-3.5” from tail
Forward fins: 10-11: from tail, box rear 1.25 off rail, toe-in adjusted for rocker..
Flatter rocker = more toe in, more rocker = less toe-in.
Run a straight edge from rear dot to stringer at nose then go out 1-2” & draw box / fin line
**Quad:**
Rear fins: 5-6” from tail tip, 2” from rail, toe like thruster
Front fins: 11-12” from tail tip, 1.25 from rail, toe to same point as rear
Alternate toe method – set fronts like thruster and set backs parallel to fronts
**Tail details:**
Swallow tail – 2-2.5” butt crack
Fish tail - 5” butt crack
For quads and thrusters add some Vee in the tail 12 to 16” up for added control