board no 3, hollow wood

ok guys ive been researching this on here for a while, just wanted to check my schedule and ask a few last questions.

im starting a hollow wood board which ill be posting the progress on here over the next month or so.

ive cut up my timber, sapele, 6mm x 45mm strips @ 8ft long

next im going to build a ply ‘aero’ frame (stringers and ribs) and chamber out as much as possible,

then once ive worked out the arrangement for the strips, superglue together (with zap a gap) and cut slightly oversize.

then flip over and add one layer of fibre and epoxy resin. do i then let this cure before flipping and clamping to the aero frame and what should i glue this to the frame with? im thinking if like poly it goes tacky would this be enough to bond to the frame?

then i flip and add the opposite skin,

and the final satisfying job is too add the rail material and shape to suit followed by a layer of 4oz all over with epoxy followed by a poly gloss coat for that super shine.

can anyone see any flaws in this or am i ready to get my hands ( and camera) messy?

cheers in anticipation

ps im hoping to get this ready to take to the uk fish fry!

dog

looking forward to a long, well-documented thread here. at least i hope so.

ok guys, here go’s

i cut my timber up at work yesterday and last night managed to get an hour in my home workshop working out the details.

i have 3 boards in my quiver, a fish and an 8’10" pintail which i built myself (see previous posts) and a 7’4" billabong (vaughan shaped)

i have decided i like the 7’4 so much i am going to try and replicate it in hollow wood.

its 7’4 x 21 x 2 3/4. ill post more dimensions once i work them out.

how do i post bigger photos on here? do i drop the resolution as last time they came up tiny.

hoping bert might pop in with his thoughts on previous question about bonding skins to frame.

greg… is resin research available in uk through anyone other than seabase?

photos coming in about 5 hrs time… tick tock

Quote:

how do i post bigger photos on here? do i drop the resolution as last time they came up tiny.

i use photobucket.com it’s pretty easy to work with. i think there’s a how-to-post-photos-using-photobucket thread on here somewhere from a few months back.

cheers oldy ill have a look for it, forgot to take my camera to the workshop last night anyhows so ill have to do it tonight.

Quote:

what should i glue this to the frame with? im thinking if like poly it goes tacky would this be enough to bond to the frame?

and the final satisfying job is too add the rail material

Looking forward to following your progress.

Unlike poly epoxy cures with a hard surface, I did some glue up test with industrial strenght contact adhesives but the best stuff was the exterior grade evostic PVA (in the blue bottle)

Adding the rail material is by far the most labour intensive time consuming part of the whole job, pbobaly takes as long as all the rest put together and then some.

What material are you planning to use for the rails?

cheers for that woody, god i love swaylocks!

i was speaking to a mate last night and he has some nice sycamore in his workshop so thinking that for the rails with maybe some of it for some stripes on the deck too. he has some purpleheart in his rack too but he aint keen on giving me any of that, he’s saving it for his stripbuilt canoe!!

if this carries on i wont have paid a penny for my timber!

also ive built a steam box at work for the students, do you think this would help for the rails?

mark

ok here goes with the photos…

ignore the messy workshop, needs prepping for this build but my ‘local’ break looks longboardable this weekend so…

itll keep!

Local break? I used to live near Manchester, UK, I don’t remember a local break.

Glue?? You cannot beat epoxy thickened with colloidal silica. Done right it wont sag, you can form beautiful fillets, it has REAL gap filling ability and we glue boats together with it!

marke, i was being sarcastic… surf hells mouth in north wales. its as local as we get!

rikds, where can i get colloidal silica? is it only used for glueing boats together?

Hey Doggie,

Here’s what I went through with my 3 HWS, lot’s of good advice and info…

Click Here…

Looking forward to seeing how yours goes, good luck with the project…

Any good boat chandlery will do silica, failing that go to Wessex resins 01794 521111

cheers guys ill get onto it. just been chatting to our ceramic techs this morn and they were warning me bout silica being class one carcinogen!! but guess if it seals my board… lol

You sure you said “colloidal silica” or just “silica”? You’ve just put the fear of god up me!!

Have just spoken to Wessex resins and they assure me (and are sending me the data sheets) that it is NOT classified as a carcinogen.

Silica is!

Rik

according to them the word colloidal is to do with it being in suspension and the fact that the solids dont drop. we had a debate this morning then referred to wikipedia which states silica as carcinogen and so if it sets and then u sand it its releasing as a dust. try colloid in wikipedia, we might be being over cautious as its university i work for but not convinced.

Now you are getting way too serious…

Leave the Silica alone and lam the undersides with plain epoxy and glass and do it on thick black plastic…

Make sure the wood is really dry (ie Hairdryer both sides)

Once everything is set flip it over and sand off any pooled resin from the top of the skin…

Give the glassed side a quick sand to flatten it out so it’s even on the skeleton…

Looks like crap but it’s on the inside, hey…

No problems, just wear a mask, goggles, gloves and long clothing…

No cancer…

cheers hicksy, i was thinking that too, dont want to over complicate things. what do you use to bond the panel to the skeleton? do you use exterior grade contact adhesive too? or any other thoughts… i feel like a sponge at the moment, all this information!

also im wondering if you guys have any thoughts on fins/placement on this one? the board im replicating is a thruster but wondering about maybe having five placements… single, thruster, quad etc what do u think?