you should have used UV cure and here’s why: no mixing. never too much resin, just leave the extra in a covered container, in the shade, until the next lam. Never goes off too fast on you. Sets immediately when you want it, and not until. Cures faster than catalyzed resin, faster turnaround times. more…
Seriously, I don’t know WHY a beginner would use anything else.
Before I got into UV, I found that 0.75 percent catalyst to resin, working in mid-70 to mid-80 degrees Fahrenheit, gave me 20 minutes to lam the board. I marked off cup measures on the sides of my resin pot, and used a syringe to measure catalyst. Doing so took a LOT of the uncertainty out of the whole experience.
Now, it’s not every beginner that can lam a board in 20 minutes, but on a six footer, single lam, you should be okay. I would suggest you don’t do two layers at once for a while. Maybe a partial second layer, like a deck patch, okay.
Your position now is just to mix a small batch and salvage the job to the extent possible. After you hot coat, you’ll have a lot of grinding to do. I can see that will be a problem too because you are, again, inexperienced. GET SOMEONE EXPERIENCED TO HELP YOU. Inattention and inexperience during hot coat sanding can easily quickly and rapidly destroy a board. Get, and use, a soft pad and low-speed grinder, suggest well under 3,000 rpm using a 9-inch pad.
WATCHING VIDEOS WILL NOT TRAIN YOU, it just shows how someone else did it, useful but absolutely not the same as moving your own tools and hands.
USE UV CURE RESIN until you are quick and agile enough to handle the limited cure time of catalyzed resin. When you go back to catalyzed resin, if you ever do, measure carefully and KEEP RECORDS of how much resin and how much catalyst you mixed for a board of a particular size. Keep that size/resin/catalyst chart on the wall of your glassing area and READ IT.