PPS - The only way I know how (just the way I have tried before and it worked a little, but I sure found it hard) is to take more off the chest/deck area and then use a round sanding tool (40-60 grit on broom handle or similar) and spend a LOOOONG time running it from the middle up to the nose with varying pressures by hand). That's my 'way', if it can be called a 'way'!!
Thanks guys, this did help, will watch some more videos and read more threads
https://invidio.us/watch?v=EBW49mjSXLk - Piece of cake!! Just drop it. ahahhaa
I think this video helps to explain my question way better than I did with my original post!
At exactly 1 Min 22 seconds in - THAT is where I get hesitant and lack confidence. When planing the deck side, if you go end to end, you keep the profile of the blank, and i want to increase the rocker. I think what I did last time was lighten up the plane towards the nose or not use it there at all (it lifts off itself). I have got no skill with my cheap ass planer to twist the screw (adjust depth of cut) as I move. I can do it a bit on the bottom where it's obviously way easier, but on the deck I think i will just leave the front quarter alone (with plane) and use hand tools only round there, hopefully leaving more foam to allow for some increased rocker.
Another thing I have just realised I should have mentioned...... I am fine with getting rocker on the bottom side. (That's easy of course!). Its the top side, where the planer and any square object won't 'fit' due to the upwards curvature!
https://invidio.us/watch?v=2KEuu57NiPY - This is pretty much exactly what I do. It looks a bit "beginnery" to me (no offence to the guy on video), as it gets bottom nicely but also flattens the deck and my son wants to SEE the rocker in the nose from top side, as opposed to just 'having' it (which is of course the most important thing) on the water facing side!
I never build a foam board, so this advice may be totally bullshit but:
if you cannot get the rocker out of blank, why not try getting it into it!
Sounds weird, but take a rocker profile, cut it into 6 or 8mm plywood creating a new stringer, then rip the original stringer out to the foam blank and glue the foam halves to the new stringer, voila no wood planing anymore, just pair and match the foam to the stringer and you receive the rocker you wanted.
hahaha. I wont be doing it but that idea is SO frikkin brilliant!! One day I am gonna try that, love the logic!
Some simple logic:
Bottom rocker curve would have greatest effects on wave catching/riding performance.
Deck rocker curve would have greatest effects on foil shape/flex and volume.
Just my $0.02.
Swaylocks Surfboard Design Forum: thoughts & theories ... practical & theoretical
RAIL PROFILE http://bgboard.blogspot.com/2014/03/march-82014-afterr-seeing-recent.html
Sorry, I got called away and just back home and faced with this blank! I have skinned it with plane, and now having a huge brain fart! It's been too long since I did the last one and stressful times here, my brain isn't working well at all. Could someone give me a few bullet points just to remind me what the best order is for shaping?! Should I do the bottom side first to get the bottom profile and rocker etc, then move onto the deck? I stood and stared at the blank for half an hour and felt like a rabbit in the headlights :D
I am after some advice. This board is for my son, he is surfing well now and says he wants super hard rails virtually right to the tip of the nose! He doesn't know a lot about construction though and I am a bit concerned it may be unsurfable. grateful for any comments by more experienced people here (surfers as much as builders). Images below show that I have shaped it and its ready for glassing, IF I leave the rails as they are.
They are 90 degree hard around the tail to around 3-4 inches in front of side fins (tri fin setup), then pretty much carries on with a TINY tuck, and I mean like 1/32 if that! I am thinking I should maybe add to the tuck to make it 1/16 to 1/8 all around except the hard tail. Could someone advise how it will perform as it is now? Will it just be super responsive (which was his hope)? I really love the shape and the glassing job he wants is insane and gonna take me forever, so I really do'nt want to end up with a board he can't ride! (and he is no use for guidance as he doesn't know how it will perform either, except what he read in books about hard rails are more responsive). Thanks
Always something someone read in a book.