What do you use to regrip?

That's a very good technique, done it several times, but you have to get the remaining sugar off of it.
One time I didn't do a very good job at removing the excess sugar, took the board out of the van, placed it on the ground, went to do some other stuff, came back to the board, and it was covered with ants. I had to laugh.

Center rocker line chosen





New bottom reshaped flush with external glass.



As I have to put a 5 mm thick PVC back in place I have set my router to 5mm deep and cut the foam yet still followed my new bottom shape.



Foam all smoothed out ready for PVC layer to be vacuumed in place

Back to the repair the PVC I'm using is an offcut that doesn't fit the shape.
I cut it up into sections to fit, this is the PVC in situ making sure it all fits.

Mike it is hard to get the levels right like that as you never know how much it will vac down. I find you often are too high or low.
But not to say it won't work

What u gonna do with the MT boxes? Hint, hint

BTW I reckon now is the time to scalpel away the Kevlar fluff, you have a nice hard edge to glance the blade along, before the d'cell layer goes in

OK I vac bagged all in one go a layer of 4 oz glass, a layer of 5mm core cell, a layer of 8oz glass . yes it all sank about 0.5mm, I'm OK with that. Here's some pics.
Wetting out the 4 oz glass



Putting corecell in position, the a bog mix to fill cracks.




The 8oz glass



Then wetting out the outside 8oz glass






In the vacuum bag





Out of the bag

Bugger! After I put the plugs in I discovered the board is soft under the area where your toes go for the front feet, I've drilled a series of holes and injected a mix of resin and qcell into the holes.

I've been trying to decide for ages to keep the board as is a twin fin or put more time and effort in and $ for extra fins and boxes to make it a quad.
I'm going to make it a quad then I have both options.

Working out where to put the boxes


Made up a jig so the boxes have the precise angles I want in relation to the rear fins.

^^^^ thanks I often wonder are people interested

Holes routed






Dry test run




Resin and qcell mix poured into holes boxes squished in





Extra resin cleaned up.

What 'Filler Coat' do you use and where do you get it?

Awesome thread BTW

R1DER: "^^^^ thanks I often wonder are people interested"

No need to worry about that, just look at the number of views, over 5000!
Keep up the good work and the pics.

Mastbender said...
R1DER: "^^^^ thanks I often wonder are people interested"

No need to worry about that, just look at the number of views, over 5000!
Keep up the good work and the pics.

I only use a mobile device to read and post in sb and it doesn't show how many views, I think that can only be seen when viewed on a pc , but good to know, thanks

This is some of a post of mine from another forum where a person believes decent toe in angles on quad boards works best I disagree, he's happy with his set up, I'm happy with mine.

"This topic only applies to waveboards that have four fins two large and two small fins, call it what you like, I'm calling them quad sailboards. In the early 90s I shaped sailboards with 3 even sized fins, the front fins had toe in and 80/20 asymmetrical foils, they worked great. I believe toe in for thrusters works great!


After reading stuff on here about toe in I made a quad board with toe in using angles suggested here, probably the worst performing board I've ever made, I then decided to do my own toe in testing and my findings are very different to what has been written on these forums over the last five years.

For my experiments I used all symmetrical fins custom made on Maui 15cm rears 10cm fronts, I used various front and back fin toe in combinations, I varied the toe in and out angles by variations or .4 degree's eg .4 one time then .8 next time then 1.2, 1.6 and so on up to 3.2.
I basically got my fins angles ready in the morning (building up with resin and then grinding the fin bases) went wavesailing in the afternoon, then did the same the next day and the next and so on ( this process took ages). I took a spare board to swap to when a fin combo was awful, I didnt want to ruin a good afternoons sailing.


My findings.
In cross onshore and sideshore.
The greater the toe in and the more fins with toe in the slower the board is to get on the plane.
With back fins parallel the greater the front fin toe in the worse the turn.
All four fins toed in at large angles, awful feeling turns.
All four fins parallel, nice turns good allround performance.


I have found a great combination of fin angles that I'm really happy with. Unfortunately I'm not sharing this info as all that hard work, time and effort it will only be plagiarised, used by a big brand who will profit from it.

I'm not here to say look at me look at me I'm so right all the time, I'm not here to promote a product. I'm just fed up seeing threads hijacked with what I believe is information that if followed would lead to people missing out on better wavesailing."

I dont think people would be getting the optimal performance out of some of these boards that have a quad and thruster option in the one board, as toe angles for the different set ups would/should be different.

I would be interested to hear how much it weighs now, Cheers.

col5555 said..
RIDER - Your 1 cup resin to 1.5 cup q cell mix, is that how much you used to filler coat the bottom ?
I have a repair to do so trying to get an idea of how much to mix up

Have you ever made dough? well that's a tad too much qcell, it doesn't stick real well, you still need some free resin to stick to the board.
A lot depends on what you're doing with it. If you're filling a big hole, then the more qcell the lighter it will be. If you want to spread it fairly thin then it needs to be more runny. If it needs a bit of strength then it also needs to be more runny, or have some microfibers in the mix.
So toothpaste consistency isn't a bad average mix.