Epoxy is a magic substance.
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My google-fu says not with PET?
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@Sender is there a specific epoxy you use or something?
Polyethylene plastic is wonderful stuff because nothing sticks to it , including epoxy. Even polysulfides like 5200 or Sika‑flex won’t stick to boards of high-density polyethylene - such boards must be screwed in place.
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It needs texture. You won’t retain the bottom graphic, but with an 80 grit sand and skinning it is fine. Just needs something to “grab”.
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Any idea how I could put a protective layer over the 37/50 numbering on top? @glyphiks mentioned using 2K clear coat.
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In my experience with clear coats, you need to be careful of what you are painting over as sometimes the clear coat can ‘eat’ into the paint that you are trying to coat over.
Proceed with caution 
maybe even clear nail polish just for that little section 
Edit: as long as you don’t make a massive mess, I am happy for you to test on my board 
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if it hasnt been mentioned yet, any recommendations on fritting a hummie deck? I want to preserve the nice CF look… just clear medium frit?? anything with a shimmer or anything ?? thanks
If you want to keep the the carbon fiber I would use clear
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and how many ounces of medium frit should be about right for a 40" deck?
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You won’t use even 1 oz on a single job. Usually I get 4oz bags though and have tons left over. Just more fore future decks.
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O wise builders, I come to you with a quandary.
I attempted to follow this guide using a fresh loaded vanguard. However, during my attempt to remove what I thought was grip tape, I pulled up what appeared to be glass fibers in resin. I attempted to peel it back, but instead of coming off in a sheet, it peeled away in a kind of string like fashion. I stopped after about the fourth string when I realized that this was not conventional grip tape. I think it might be some sort of fiberglass protective sheet with spray on grip on top.
Did I just destroy the deck? Is this sheet removable so I can put polyurethane down in its place?
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I believe the loaded vanguards have a spray on grip. I’d have to go look at mine. You likely pulled on a layer that was delaminating. Sand off the spray on grip tape. When you epoxy for the glass frit that spot can be easily filled with epoxy and likely forgotten
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If you want to get rid of the griptape, you have to sand it down. It’s a painfully slow process, even with an orbital sander, but that’s what I did.
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The hive mind has spoken, sanding it is. What grit sandpaper should I use? I have 60, but I want to do this correctly so I’m open to getting a different grit.
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I would get a bunch that way you can step up 60 to knock down the grip then 80 for a bit and step up each level until 200 or 220 just make sure you are wiping off the board every so often and check how far you are. I would just go until the grip is off then a few more passes with the 220 and then wipe down with a tac cloth or mineral spirits and then epoxy it.
Ok guys, just went to the hardware store, i need a recommendation for what to get… medium frit is on the way.
onecoat poly? regular poly? spar urethane? pro series spar urethane? or spar marine?
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I’d go with water based spar
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Polycrylic is not the same as polyurethane. It is like a runny milky colors. When dried and cured it has like a plastic type feel. I would not use with grip. That would be more for bottom of the board and then you can wet sand it to a mirror like finish. The helmsmas spar is oil base and not an easy clean up.
Out of those options I would use the Pro Series Spar. It is what @longhairedboy uses I believe.
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I have a bucket of the Helmsman water based spar and it’s runny AF but works well. You just need to do a lot of coats.
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