Post by bpalumbo159 on Jul 29, 2014 12:02:56 GMT -5
Just starting out building my first sup and the plans call for 1/8 Luan, underlaminent. First question is do the want 1/8 for weight reasons? Second would 3/16 or 1/4 work ok for the ribs I'm having a hard time find 1/8 anywhere? Third is there any specific woods I should use for the spine and ribs? I know there's other theads on ribs but nothing that answered my question. If there is a better place to post this please let me know. Thanks guys!
Post by juliangibraltar on Jul 29, 2014 14:39:40 GMT -5
I think 1/8 is optimum for weight to strength ratio and I'm sure 3/16 wont be a problem BUT it will weigh a lot more as you say and gradually (as happened to me) your board ends up weighing a lot. I actually used 4mm for the ribs which is somewhere in between in inches (5/32). I would suggest trying to find something closer to 1/8 than to 3/16 if possible but if you cant just go for it!
I used basic Marine Ply for the spine and ribs as this meant if any water got into the board it wouldn't all come apart but if you make it "waterproof" normal Plywood should work. It was Pine plywood by the way, nothing special. Not actually sure of the difference between that and Luan...I think its the same but a different name in the US?