Almost done sanding and will gloss this weekend…I forget how much gloss resin I should use and how hot to kick it? It’s friggin’ HHHHOTTTTT here too…I’d think the same amount of resin as hotcoat just to be safe (1qt.)? Kick it around 15-18cc’s?? Everything is coming along really smooth (even my sanding, which I usually HATE), so I don’t want to get this far and F$@& up the gloss…Thanks.
About 18 oz per side.
Jimeny Christmas…18oz.??? I don’t know if I could cover the board with that!! Arrgghhhh…
That’s 18 fluid ounces… there are 32 fluid ounces in a quart. So use a quart and watch how much material ends up on the floor. But really, a pint is enough.
D.R.
Tenover, Also, if it’s hot where you are, you may want to adjust your catalyst down. The gloss needs time to flow out. For gloss coats at 74 degrees, the recommendations I use are:
1 qt.resin @ 1 percent: 9cc catalyst.
1 qt.resin @ 1 1/2 percent: 14cc catalyst.
If it were me, I’d use a half quart (1 pint) resin or slightly more, and adjust the catalyst to around 1 percent, or 4 1/2cc cat.
Doug
Thanks, will do.
Howzit tenover, Start with 20 oz gloss resin then add 10% styrene and a little SA,mix it really good then add 25 cc’s catalyst. Should kick in about 10- 15 minutes if it’s rhiechold but if it’s sylmar it takes longer to kick so you could add some ( 2-3 oz ) lam resin( still should be 20 oz total ) to make it kick quicker.Aloha,Kokua
Whoa, check that Kokua, 20 oz resin plus 10% styrene (2 oz) with 25 (!!!) oz catalyst? That’s gonna go off alrighty.
I have read that resin is strongest at 1% catalyst.
I think the coverage of his gloss coat depends on how thin the resin ends up with the styrene and SA, and (to a small extent) how finely he has sanded the hot coat. I was gonna say that 12 oz resin (cup and a half) with styrene would do okay.
But why isn’t he using UV cure?
The board is sanded cleanly to 100grit. When wet, there are no visible scratches, and it’s sanded flat…no bumps, drips, or anything. I’m not sure why I’m not using UV cure resin…Just have ever tried it before. Anyways, this is almost the last step, so maybe next time. The gloss resin I get is already premixed with Styrene (from Mitch’s)…I’m just worried that I won’t be able to get good coverage on the board with that little…Doing the hotcoat with 1qt./per side was pretty close!
Man…you’re worrying too much. Buy some extra and I will buy your leftovers.
Howzit Honolulu, 12 oz's just isn't enough to cover a 9'8" board but 22 oz ( with styrene ) is plenty, better to leave some on the floor than not have enough. Even Dennis recommended 18 oz which is pretty right on, but tenover was not sure if that was enough. I have used this fomular for many, many years and it has proven to work great. It will kick just right ( about 10-15 minutes) with the gloss totally smoothed out and thick enough for the rub out process with out going through the gloss coat and into the hotcoat or even hitting the weave. Ever notice how gloss resin tends to skip across the board when you first apply it? what if 25% of the 12oz flys off the board, you are now down to 9oz and that will never do it. With over 40 years of working with resin and surfboards I think I enjoy doing gloss work the most.There is nothing more satisfying then watching a gloss coat come out beautiful and smooth. People who have seen how my glosses come out always ask " how do you make them like that ". The bottom line is do it however you want and I am just giving the info of how I do it. Aloha,Kokua
remember your hot coat is filling in weave so you always have more hot coat resin than gloss going on
Howzit nat, Actually it depends on how aggresive you are when sanding and I am very aggresive when I sand, my sanded hotcoats are not that thick. Some people just sand till the shine is gone but I take it further if the board is getting a gloss.Aloha,Kokua
Kokua: my bad, I misread. Your mix will be close to 4 percent catalyst, a little high, but hot coats aren’t about strength.
The nice thing about UV cure is not having to even think of this ratio business, or have catalyst burning off your fingerprints, etc. And if you’re buying premixed finish resin, if you run a little short, just pour some more on and have at it. Seriously, UV cure is a MAJOR simplification. Too bad I only started using it after I had my catalyst chart tacked to the wall, and meaured resin to the fraction of a cup, and catalyst with a little syringe. Along came UV cure and although I didn’t throw that stuff away, I only use catalyst for pinlines and fin boxes now. Since it’s such nasty stuff I’m not sorry to leave what little I have left, sitting on the shelf.
Now cobalt accelerator, that’s another thing.
i can’t contribute much to this thread other than to say kokua’s recipe of adding 10% styrene works wonders. thanks for sharing the wisdom of your experience kokua.
Howzit Honolulu, Love UV resin for laminating but when it comes to hot coats and gloss fresin I prefer using catalyst, guess it’s the old guy in me. Tried using UV for hot coats a couple of times and didn’t care for it. You have to use 2 times the amount of SA ( per instructions ) and that thins the hot coat to much in my mind. Have a friend who has used it for gloss resin but the results were so so. I figure if I have a good thing going then why mess with it.Aloha,Kokua
Ok, well, I mixed up just under a Qt. for the deck and kicked it with about 14cc’s…Seemed like it kicked in the right amount of time, ut man, you guys are right, I ended up with so much extra resin back in the bucket, and the gloss coat is a little thick. BUT, I have a REAL hard time getting the initial pour of resin spread out over the entire surface, it seems like it takes forever getting the resin spread out before I can get to the 45 degree strokes…Here’s a pic.
…all these stuff about % of MEKP is not correct
I mean, depends on the weather
for ex. now here there s about 30ºF so I use a lot more than 4% of MEKP…
and cold wind and humidity etc
is not the same 85 - 90 F with humidity than 30 with Humidity, for the resin…you can obtain a WHITE stratification for example
you dont have this kind of problem with warm weather…
–the catalyst chart:
you need different ones for every brand of resin
I used Reichhold, Resana, Cray Valley, Elekeiroz, Silmar, Cyba to name a few
----other
a quart for the Hot coat, like I said in the other thread is a totally waste of resin, and then you have more weight (useless)
and more to sand
–you do not need a thick h coat if you ll do a gloss coat
only “thick” HC if you do a sand finish (in the HC)
----man!!! you have a Bonneville!!
I ve got a 5T from 1948 and shes my everyday ride!!! always on the road
yesterday I travel 300 miles with she and 7 olders more
- Yup, that is mt daily driver as well (and I LOVE it), but it’s a 2005 Blacked-out Bonnie…
Kokua- Thank you very much for sharing your knowledge…I’m about to use it for my bottom gloss…Fingers crossed. I’m mixing 1 qt. of gloss resin (pre-mixed) with 16cc’s of catalyst…damn I’m nervous…
Entire build thread here…
http://forum.surfermag.com/forum/showflat.php?Cat=0&Board=UBB4&Number=1203306&page=0&fpart=4
Well I’ll be damned…That went friggin’ PERFECT! Thanks for all our help (as usual)! Kicked 1 1/4 qt. of resin at about 16cc’s in semi-humid 75 degree San Diego weather and it gelled in approximately 15 1/2 minutes…SOOOOO stoked.