Gel coat question

What's the best way to darken red gel coat? Thanks

 

Old and sun burned I quess?

 

Bring a sample panel to your gel coat supplier. He will take one litre of base colour gel coat and custom mix.
Its a frustrating waste of time to mix yourself.

 

The question is not clear. Are you wanting to darken gel coat on the boat or in the tin.

 

My guess is he's got liquid gel coat that's colored red and he wants to make it a darker red.

 

The add some brown pigment.

 

To darken almost any color just add a bit of black, or brown as Frosty suggested.

I found that my local ACE hardware carried a type of universal colorant that could readily be used to tint my gel coat without any adverse affects. Since my color demands are normally pretty basic (white/gray) a small can of lamp black colorant should last me a long time. I get the impression that in time you're going to require a pretty extensive color selection and or knowledge base to met your customer demands. If thats the case then you might find your local paint store to be an invaluable resource.

MM

 

Add green. I had some green and red gelcoat I mixed to have enough for a boat and it came out a dark maroon.
http://www.youtube.com/watch?v=4wFGR5oezwM

 

You can always add black gelcoat. I would stay clear of adding alot of pigment to allready pigmented gelcoat because you dont wanna put to much pigment then it will not dry correctly. Check out fiberglasssupplydepot.com i believe they sell the black gelcoat plus they have all the different pigments plus they have good pricing better then west marine or lowes ive found.

 

The one nice thing about using a concentrated black colorant is you won't need to add much to see a significant difference.... in this case a little dab will do you. I agree that adding too much can affect the curing process, so it's always best to test whatever concoction you come up with first before commiting it to glass.

MM