what best glue to use on eps

so i am wanting to glue up another eps blank, the last one i used epoxy resin and glue power, but had some small troubles when sanding the rails as the glue did not sand well, i have read a few threads on here and am still unsure on the best glue? can i use pva ( max bond) or something like that? other wise i could do gorilla glue but do not think that will sand that well either

what you guys think 

Hi , Think i was going to call you someday about EPS blank glue ups… sorry didnt get around to it.

I have used gorilla glue and I think its the best, you just have to get the amounts right so it does not foam out too much, it sands ok as long as its not too thick as well. Something I did on my latest Eps glue up was glue the center of the pieces and attempt to keep the glue away from the edges, this way its easier to shape/sand and then I figure the edges will be secured/glued with the epoxy glassing anyway… just a thought.

no expert my understanding gorilla glue is a polyurethane glue usually they foam up. Nocean is spot on just keep your glue line in from the edge. the glue is simply used to hold the sheets together wile you shape the glass is the strength. A foaming glue will sand better than epoxy or a pva these two glues tend to tear out the foam were as the G.G. or polyurethane glue will sand and cut better.

no expert at boards but made heaps of models this way.

did you try the spray adhesive by 3m, number 77 yet?

Hi, when I need to, I use white wood glue, it work well. Even for sanding rails.

Not same density than EPS blank but it work and it’s cheap.

ROO glue is cheap and easy to sand. Not good for CNC but great for hand shaping.

I’ve used mostly white glue with wood.  Roo is good with PVC stringers.  Epoxy is good if the board is over 3 inches thick.  Water based glues don’t dry to the center if the board is thick.  Gorilla Glue works fine but the color can show around the stringer.  Super 77 if your in a hurry and are going to glass it right away.  It’ll let go in a couple days so you’d better get glass on it.  Careful in lining up the sides with contact glue like 77.  Once it’s set your committed.  The others you can slide around and get everything lined up nice.

For shaping all are OK.  Be clean around the stringer with epoxy or it can be a mess.  Stuff gets real hard and will fling chunks of resin at you if the glue up is sloppy. White glue and Roo probably shape the best.  Super 77 is fine as well.  Never used much Gorilla because it wasn’t pretty, it didn’t stay glued to wood stringers very long (couple weeks and it was splitting in the nose) and was expensive.  Did a few and they did shape fine.

Just about anything works against the stringer, because the wood is hard and you’ll use your finger plane or whatever there anyway. If you gluing in chunks of foam that you’ll be shaping, like along the rail, if you make sure you use very little, make it a tight fit, and keep the glue in the center of the plug, you’re fine. Usually the glued seam is so thin it shapes well with sharp tools anyway and you don’t notice it too much. Sharp tools are key anyway… Almost all glue shows with tints and pigments. With all this having been said, I use white glue. It’s cheap and it works.

As far as color goes – Gorilla glue does make a glue that dries white.  It is their faser drying formula:

[img_assist|nid=1049952|title=Gorilla Glue|desc=|link=none|align=left|width=640|height=279]

 

http://www.gorillaglue.com/glues/fastcure/index.aspx

I recently used it to glue in foam blocks for a fin install repair.  It sanded very well and matched the color of white EPS very closely.

[img_assist|nid=1049953|title=Fin Repair01|desc=|link=none|align=left|width=480|height=640]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[img_assist|nid=1049954|title=Fin Repair02|desc=|link=none|align=left|width=480|height=640]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[img_assist|nid=1049955|title=Fin Repair03|desc=|link=none|align=left|width=480|height=640]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE – in the above pictures this board was glassed with bamboo fabric and that is why you see a yellow tint.  The fast cure gorilla glue is white and matches the color of white EPS.

I did this when glueing rails on using liquid nails and PVA (tried both on same board) and it worked well.  Epoxy filled the gaps between the surface and the glue line.  The liquid nails is not recommended because it’s brown, so shows up when you mess up.

That fast glue gorilla looks like the stuff! I wonder if it available in N.Z?

I am sure you can find it online somewhere – I did a quick search on eBay and found this – says it ships worldwide:

http://cgi.ebay.com/Gorilla-Glue-2oz-Bottle-FAST-CURE-Waterproof-2-Oz-Ounce_W0QQitemZ180474663787QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2a0520d36b#ht_500wt_1182

 

also this site says they ship to NZ:

http://www.rockler.com/product.cfm?page=17816&filter=glue%20fast

Try Vise glue.

its like gorilla but does have a yellow tinge to it. In oz can be bought at Bunnings, can be mixed with spak filler to change colour to white.

 

I have used it with EPS, XPS, and also PU blanks.

Also with dings in eps, drill a hole into the ding squirt it in and it will foam out all the water, quick and easy ding repair!

Hope this helps

Hey guys,

What kind of glue should I use for 1.2# eps to be able to hotwire it? I’m in Thailand and have to glue two 4’ long blanks together. Brands names wouldn’t help me much here…

Thanks/Merci

m

mousset,

you want a foaming polyurethane glue.

instructions will mention expansion and contact with water to help start the reaction.

this stuff is easier to sand along with the foam when you are shaping.

good luck!

Thanks a lot :slight_smile:

Thats exactly what I need to know. Now the fun part of going in shops and trying to be understood can start!

MERCI

m

What is the compound in “ROO” glue? Is it alyphatic or cyanoacrylic or another version of urethane? Where is it sold in the States? What is it’s intended use?

I use a water based impact adhesive. I’ve found that it can be watered down for EPS. Simply brush on both surfaces, wait until dry (about 15 mins) then close joint. it is great as it bonds instantly so no clamping required, and it sands nicely also. I’ve tried PVA but found that it never seems to dry as the air cannot get to it.