Just experimenting with epoxy at the moment trying to construct a centre board out of ply to suction cup onto the bottom of my paddle board to teach the kids on. Went all bad today when the resin basically would not stick to the ply that I had spray painted black and ended up all botchy. Probably easier to start again. How would one taint a resin back so I don't have to do it three times?

Buy epoxy black pigment add it to the resin.

Select to expand quote

R1DER said..
Buy epoxy black pigment add it to the resin.

Thanks didn't know it existed.

Select to expand quote

Dean 424 said..

R1DER said..
Buy epoxy black pigment add it to the resin.

Thanks didn't know it existed.

You can get it mail order from Boatcraft Pacific and is quite cheap. I find it tends to slow down cure times. Also the resin will remain somewhat translucent, so it might not hide the ply very well. You will have to experiment a little.

Thanks for the lead. I don't mind if it is a bit translucent. I would just like to get better at this epoxy thing so that I can repair my own boards etc.

Hey Dean,

Not quite as much fun as messing with epoxy, but I've found that a large plastic chopping board works really well with suction cups as a centreboard. Good luck with the teaching of the kids, give them plenty of breaks and play time in between sailing (I've found the ratio is about 5 minutes sailing / 25 minutes playing!)

Thanks James will take onboard, but was trying to replicate the carbon look with the white paint sanded back and thought it better to practice on a bit of ply rather than a board.

Select to expand quote

Dean 424 said..
Thanks for the lead. I don't mind if it is a bit translucent. I would just like to get better at this epoxy thing so that I can repair my own boards etc.

I used some white pigment recently as part of the epoxy mix. The end result was a bit yellowish but strong. I believe though, that the better way is to spray on a two pack finishing coat for colouring purposes. This is then buffed and polished. I have experimented with white gel coat placed over the top of expoxy. Normally these two materials are not used in tandem as the polyester reacts with the foam core. What I have done is to use the gel coat as a surface finish, that I sand and buff. Spraying two pack polyurethane can be toxic and expensive but does provide the professional touch.