Im new at shaping and looking for some advice on how to shape a single into a double concave then slight vee last 6'' off of tail.. How does it all blend in?? start to finish. Im shaping a 5'5 19 3/8 x 2 3/8 13 1/4 nose 15 1/4 tail. All advice appreciated...Mahalo's
I start with the single at the nose and carry it back, then I put the doubles in and carry it up to the single and feather them together.
I start with the single at the nose and carry it back, then I put the doubles in and carry it up to the single and feather them together.
Sounds good, im confused about the stringer height though. My single concave the stringer (middle) depth is below the rail line, how do i do the doubles when the stringer (middle)should be a little higher on each side of the doubles?? If that even makes any sense.. Im probably making it out to be more complicated than it should be... Much Mahalo's
It sounds more confusing than it is. Here is how I was taught:
1. Make out single, starting at nose and ending at tail (or however far back you want it. When you sand it down the stringer is flush with the foam, and both concave to the rails.
2. Put your doubles in starting from the tail to whatever you want as your forward point. When you sand the doubles down, they should feather evenly into the single that you've already created. Your stringer is now protruding above the double and it is still flush with the single. Your stringer should now feel like a bump that gently tapers to flat at the single.
When looking from nose to tail, it should look like the following picture.
Its making more sense now. I'm gonna practice on a piece of scrap foam i have first, so i dont mess it up to bad when i get on my blank.
Thanks a bunch for da input!
If you’re doing your concaves first, you gotta keep your vee in mind. Easier mentally for me if I do my vee first, then my concaves. Seems like a more natural progression once you’re at the finish shaping stage.
I’d like to know what the pros do.
I need to say this as gently as possible. If you want to shape a single concave to a double, follow the advice given. If you want to have vee, not. I was taught to do the bottom flat first. This is harder than it sounds. Check your bottom rail to rail with a level. (this is supposing that you have leveled your racks) Add the vee, start it in front of the side fins if you are doing a thruster/quad set-up. If it is a single, start your vee at least 12" up. At 6" you will not be doing the shape any favors. After you do all this, mark out your concaves with the single flowing into the double anywhere from 12 to 18" up from the tail. If your double is at the same dims as the vee, congats, you have learned how to do a spiral vee!!! (not a secret, but some guys make it seem so) Keep the concaves shallow and flowing smoothly thru the transitions of the rail line. (you will see this as you shape them in). If the board works the way you are aiming at, you can experiment further by deepening the concaves, lengthing the vee, eliminating the vee, etc.... Good luck, and I hope this helps!
Interesting observation. I do concaves first, vee second and then I do my rails last. Since the rails keep the template in shape, this seems to be the natural progression for me. The rails clean everything up. I'm always keeping the vee in mind while doing the concaves, however.
Is the double supposed to be set within the single with the stringer above the rail line for both (bottom of board facing down)? Or does the stringer gradually come down to the rail line as the single fades into the double? This is what I’m trying to grasp. If you do the single first front to back then do the double the stringer is up into the board the whole way but that pic shows it even with the rails on the double.
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If you do the single first front to back then do the double the stringer is up into the board the whole way but that pic shows it even with the rails on the double.
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This would be the case if you were molding a flat surface, but remember a surfboard is bowed.Think of the bottom centerline on a v-bottom boat hull.
All the advice helps. Nothing better than watching it be done then doing hands on.. i think the learning curve goes quicker that way
Much Mahalo's