…that’s right. And if you order now we’ll throw in a free order of frustration and super size it!
Just a little reminder on what NOT to do with UV resin. I promised my wife that would I finish her board this past Saturday. Weather was perfect, with warm temps and plenty of sunshine. So I got started. Taped off the rails and proceeded with the top coat. (Not really a gloss coat sinceI was using sanding resin but a good sanding with 600 grit works well.) Anyway, layed a beautiful thin coat on the deck, was quite pleased with the job and exposed it to El Sol. Nice work! Next, flipped the board over and did the same for the bottom. Another beautiful thin even coat. Now quick! Run it out into the direct sunlight so that it goes off immediately. Don’t bother to let wax rise first just get it done! Can you see where this is leading? Talk to wife, make a phone call, let that resin get good and hard in the sun.
Now, bring her in and start sanding. 220 grit should clean up those little tape lines. Nope! What’s wrong with this damn sandpaper? Try another disk. Same thing, bastard keeps gumming up. Finally finished the tape lines and begin on the deck. Gummed a few more pieces but nothing dramatic. Flip the board over and sand the bottom. Good luck!!! Wasted several sheets and 45 minutes on the bottom, and then realized what I had done. What a dufus!!! I didn’t give the wax time to rise before exposing it to the sun. In the past I would open the garage door and let it slowly start to cure then take it out. Much easier to sand that way. So after letting out a string of explicatives that would make my grandfather proud, I restarted sanding with 150 grit and took it down to 600. Boy is my forearm sore! (And yes I did use a Harbor Freight polisher/sander.)
Folks, don’t get anxious and make these mistakes. I can because I am a rookie however, I hope I will never repeat this foolish act.
Howzit SrPato, That is the reason I shoot my hot coats with catalyst even with UV resin. Let the board sit for about 15 minutes after it kicks and then put it in the sun to get it hard enough to sand. Aloha,Kokua
I have been just waiting 5 min before ever exposing the board to the sun and before i open my garage I look and see if the wax has surfaced. If it has i just drag it out no problems. My question is, why the catalist if it dosen’t make the wax rize? Hopefully you will be able to tell me the problem with my thinking. Maybe the resin runs to much in this time…?
what was that gummy sandpaper?/…i have pretty much found a cure…it took a while though…sounds like you got yours done the hard way…its very simple sometimes…i had wAX problems once…
Howzit Soulslider, One thing they say to do if you want to do it with UV is to double the SA amount, which I don’t like because it makes the resin to thin. With catalyst it doesn’t kick as fast as UV which lets the wax surface as it kicks. Hope that helps.Aloha,Kokua
I was going to say that you could increase the SA; Kokua beat me to it. We also found that you can “throttle” the reaction if you are doing one board at a time. Just expose the board to the full strength of the sun for about 5 seconds and then go back to the shade. (This initiates the reaction and forces the oxygen-blocking wax up to the surface, keeping the sticky resin from seeking excess binding sites). While in the safety of your shaded area, wait about 30 seconds. You will see the wax rise during this phase. Lastly, place in the bright sun again to get the reaction to go to completion. Hope this helps…
PS. next time you get a sticky hotcoat, you can do another UV hotcoat right on top of the existing one if you do so within 15 minutes or so. UV hotcoats of this kind can be extremely thin and will still float the wax, unlike an MEKP reacted hotcoat. You can then aggressively sand away to sacrificial top coat and finish out your first coat, no gummed paper…
After encountering that situation too many times (gummy resin), I’ve been letting the board sit long enough for the resin to level, then I put the board in the shade to go off, I’ve not had a problem since. Which leads me to a question, if that were to happen again, could you put the board in a vacuum bag, pump out all the air and have the resin sandable? Just a question, I don’t have a bag or a pump.
Kokua and PlusOneShaper: Thanks for the info it’s very helpful.
PlusOneShaper: Rode one of your boards in Carlsbad this past summer. 6’8" round nose tri. Too much fun!!!
Benny1: Thanks for the comments. I wasn’t sure if the vert lines from the front door and the wall would detract too much from the board. I guess it’s ok, but in the future I’ll stick to shooting the pics in front of the blue wall.