Builders' Forum Archives
Re: wood for rowboat
Posted by Mark Camp on Jul 21, 2004
Considering only cost, availablity, weight, and stiffness, and giving each equal weight, I come up with the scores below for lightweight small strip boat construction. Your requirements may vary, for example if you have some Sitka already lying around going to waste.
I did not consider aesthetics because it is a matter of taste. But both woods are beautiful, in my judgement. I also didn't consider machinability. Strength, like stiffness, is irrelevant, as noted. Both woods are compatible with epoxy. Durability, as you noted, is irrelevant.
WRC 80% (good), Sitka 40% (Poor).
Here is the calculation.
KEY: 1 Excellent; 2 Good; 3 Fair; 4 Poor; 5 Very Poor
WOOD COST Availability WEIGHT Stiffness
WRC 4 3 5 N/A*
Sitka 1 1 4 N/A*
*Spar/Aircraft quality Sitka Spruce is outstanding for its strength to weight and stiffness-to-weight ratios. WRC is the weakest wood you can buy in terms of stiffness in bending. However, neither of these facts is relevant in strip-built boats. Only weight is (ie, density), and here WRC has a clear edge over Sitka.
In Response to: wood for rowboat by Matt on Jul 21, 2004
- Sorry about formatting by Mark Camp on Jul 21, 2004