to make a long story short…the free lap came out a bit sketchy there’s some Resin(polyester ofcourse) drops and i wanted to sand them and the lap down as much as possible before doing the deck Glassing…
but when i try to sand it with a block and an 80grit …it realy sticky and the paper’s grains stick and makes the board real ugly !(shown in the 3rd photo)… how should i go from here ?! thanx,Amir
just paint a little laminating resin out onto the foam around the hairy areas to protect the foam…make fairly slow mix or you will end up with yellow ring around lap line …,or you could use hotcoat{filler resin} will make it easy to sand lap line…( i never feel good about filler resin inside a glass job,but other guys seem to get away with it}, your first few boards you glass are allowed to be a bit grubbby…keep going it will still float and catch waves…
thanx a lot JustJuice great tips ! p.s what about the sand paper grains getting their color onto the lap line when i try to sand ? will it be better or not happen if i try a different paper ? what did i do wrong? haha
Lam resin is not so great for sanding! No worries if you use hot coat/fill resin so long as you sand enough to get all the waxy off, then your deck lam will adhere as if it had been laminating resin all along.
My first board was so similar! On the second I took a lot more care cutting a clean line in the cloth and again cutting off extra lines or resin after it was partially set (tacky to touch). Came out much better.
White / clear sandpaper helps hide the sandpaper smears. Also use new sandpaper every time.You should try epoxy next time.You use the same for lam,hot coats.easy to sand.less odor.
hi tom… not really wrong laminating resin stays tacky so the other layers have a chemical bond…when learning to glass most people push the glass straight around the rails when learning.thats why so many strands of glass out on to deck.just have to learn to start at wide point and push towards the ends around the planshape as not to fray the glass ,getting the glass square at the wide point and picking a spot to start the laping the glass is important to…white sand paper helps for the laps…i use a 5 inche pad with 60 grit on a machine …then a light wipe with styrene to get rid of slight bruising of the glass…
hi tom… not really wrong laminating resin stays tacky so the other layers have a chemical bond…when learning to glass most people push the glass straight around the rails ,thats why so many strands of glass out on to deck.just have to learn to start at wide point and push towards the ends around the planshape as not to fray the glass ,getting the glass square at the wide point and picking a spot to start the laping the glass is important to…white sand paper helps for the laps…i use a 5 inche pad with 60 grit on a machine …then a light wipe with styrene to get rid of slight bruising of the glass…
As justjuice said - paint a little lam resin. I think you’ll find it a lot better to use a machine than hand sand - that should solve your problem.
you can try a rasp or coarse file instead of sandpaper
I’ve had that problem with sandpaper before. I found that soaking a bit of acetone into a white cotton rag (cotton so it doesn’t dissolve, white so no colour leaches out onto the board) and wiping the spots where the coloured grit has stuck helps to remove it. Just make sure you wear gloves and a mask (acetone is pretty toxic stuff) and don’t get any acetone on the foam or on your skin if possible.
Go slow, small bits at a time.
Disclaimer: I’m no pro, but this has worked for me in the past.
For a different approach try a piece of wooden dowel, or even a glass jar and roll it firmly over the high spots of the lap, pushing them down into the foam to give you a level surface ready for the next layer of glassing.
You Guys are AWASOME !!! Thanx heaps for every single comment everything has helped me ! iv’e talked to some local glasser friends and theyve all sayd exactly what you guys did ! i’d first use some acetone to try and lightley remove any of the residue from the sand paper that smered on the glass…than i’d do a bit of "hotcoat"resin on the edges and where i wanna sand with a little brush…sand it all down hopefully as clean as i can than move on to Glassing the deck with 2 4Oz cloth 
hope it all works well hahah i’d let your know what happend ! and yeah,iv’e bought a good quality paper that does not smere or disintegrate thanx again everyone you all are great .
SGO ive never heard of that approach ! sound scrary for me to do haha :)
hello amir. when you paint on the filler resin on the lap kick it slow. If you use to much catalyst it can burn the foam and will leave a funny yellow line along your lap.
I was taught long ago, to use a wallpaper seam roller on your lap to push it down level to the foams surface before laying the next layer of glass over. Works really good. If you can find a metal roller they work much better then the wood or plastic ones. Takes a good amount of pressure and the better rollers hold up to it.
cant say how much ive learned from all of your comments that gave me confidence in moving forward with the board :)
so : iv’e used a bit of “hotcoat” resin to touch the lap and where i needed to sand and had probloms…all went pretty smooth and made sanding real easy…
still had a lot of dirt from hands and stuff (but that’s ok…just cosmetics haha)
moved forward and did a X2 4oz cloth with a bit of vector carbon on the tail… a more experienced glasser friend of mine helped that i would make any mistakes haha :)
this photo is after the deck glassing and hot-coat…now gonne hot coat the buttom tommorow,fin boxes and stuff and were good to go ! my first shape 
again i’d say…u guys are awasome and very knowledgeable and helped me a lot !
it’s pretty white… i’d upload some more pics soon ! hope this thing moves ! its a 5’5 X 19 1/4 X 2 1/4 kind of a frankenstein fish haha
Board looks good man. Keep it up!
