Hardner in gelcoat how much?

[Billy]

Hi I have purchesed some gel coat from my local dealer, two quarts, the cans came with out lables he did not know if it had wax in it, any way I did some small spot repairs and used PVA mold relese, I had pretty good results. the question is how many drops of hardener do you use per once?I used 18 and it set in about 20 minutes. I would like to re do the floor and would like to do it with out having sections. but I dont want the whole mix to set up. nor do I want to stop and remix. any thoughts
Thanks Billy

 

[rplas48]

use the same amount as for fiberglass resin. For a given quanty the amount of drops of hardener will vary with outside temperature. Check your local marine supply and you will find a chart on the can of resin.

Ray

 

[Capt. Ronnie]

10-12 CCs per quart depending on temp.

 

[Bryan 2530]

Check it out.... 8)

http://www.uscomposites.com/pdf/MEKPDirections.pdf

****NOTICE IT SAYS TO DOUBLE THE AMOUNTS WHEN USING GELCOAT****

 

[Porkchunker]

I've used 12 drops of hardener per oz of gelcoat in the past and it works well. See my thread in the Projects forum on "Gelcoat Repair A to Z"

Have heard if you over-do it, the gelcoat can get brittle.

Dave

aka