Putting pigment in a hot coat ?

Just a quick question ?? Does putting pigment in a hot coat weaken the glass. I really liked the outcome after my first hot coat, but i decided to give it another layer just to make sure . In doing this It made my nice pure white finish blotchy with blue resin marks where it pooled up. Long story short could I have skipped this step and just left it with the pigmented hot coat ? 

[img_assist|nid=1062699|title=Eggs|desc=|link=none|align=left|width=640|height=480]

I would like to know if you can do this with a resin swirl?

I’ve done them. Why would it weaken the glass, it is already laminated? I usually do them if I screw up a tint…which is often :slight_smile:

“Putting pigment in the resin weakens the resin.  A plain, clear board is strong, simple, and cheap”.  quote surfer steve. 

 

This is what worried me astevens was wondering what you guys thought. 

Pigment basically dilutes the resin, so yes, technically it weakens it. Is it going to noticably influence your board? No. The surfer steve site is all about KISS…plain, clear =simple and cheap, as well as a bit stronger. That being said, colored hot coats are hard to get even and not blotchy–much easier to do it in the lam, where you have the fiberglass giving you a consistent resin thickness (and hence, more consistent color).

Ive tried doing that but it never came out opaque it was always a semi tint. is their some trick in how do this ?

soften resin, yes. weaken , glass,I don’t think so. If you lam the board with clear resin and then do a hotcoat pigmented i don’t see how the glass would be weaker unless someone can enlighten me on this matter. glass and resin are 2 different things. 

You need to use opaque pigment and put enough in to make it opaque. different colors seem to be more opaque than others.

good luck

 

Agreed. Even the idea of putting color in a lamination doesn’t really lessen the strength to a significant degree. Adding too much catalyst is more detrimental, all else being equal.

I saw that someone else quoted that “surfer Steve” guy. I cannot believe that anyone takes what he says seriously.

just a question, zackoopman,

what are the dimensions to that board you’re holding?

it looks rad

thanks

Tint will become an opaque pastel when added to white pigmented resin.Pigments that have been developed over the years are as opaque and bright as you want them provided you add enough to your resin.  Best to tint or pigment on the lamination or as panels on a sanded hotcoat .  Tinted hotcoats are inconsistent, blotchy and generally look like crap. 

6’3’’ x 22’’ x 3 thick 

Thanks Zac

Should be good for summer.

What is the percentage of pigment you used for the 1st good hot coat.

 

Colourup im not that methodical in my thinking nor do I know proper ratios for pigment, catalyst to resin etc hhaha. I have my own numbers which seem to work but with this board I just put as much pigment in until I couldnt see the wood of the mixing stick. In the end I basically just tried to sand off my second hot coat to get back to the white, the board is smooth but the faint blue is still their. Heres the finished board :)[img_assist|nid=1062771|title=Fin Egg|desc=|link=none|align=center|width=640|height=480]

Yes, it will weaken it to a small degree, but the strength is in the glass. The hot coat is only a sanding buffer for staying out of the cloth weave. The problem is when you sand it, it will get blotchy. Light and dark areas. Looks ugly and amatuerish.

 

How does it go Zac?

Not sure as yet colourup, waves in sydney have been nothing short of terrible for the last month. maybe some respite tommorow, think this board is goign to be sold anywho to a friend who was really keen on it. 

Cool, Looks perfect for the summer mush we’re getting. It’s good he’s a mate, cause you’ll get to test it!