I'm in love with this epoxy

JTknives

JTknives

Joined
Jun 11, 2006
Messages
8,651
well I am finishing up a knife today and needed some epoxy for the stick tang. so i went over to the local fastenal store. there store is connected to my work so its just next door, makes it handy. thy had some jb weld which i like but i always have a hard time mixing it in just the right amounts and its dark so it shows up as a line and it never seams to stick really good to wood. so any way i spotted some loctight 2 part epoxy but it was missing the plunger part on all the bottles. so i asked my friend at the counter if i needed a special tool to push the epoxy out. he went in the back and handed me this gun. I was like wow that's cool. I asked how much it was and he was like well we sell it for over 60 bucks but do you want to know your price :D. so any way i ended up with the gun and some E-00NS for a steal of a deal. this is the first time that i have ever used this epoxy as i have allways just used jb weld or the 2 part epoxy with the built in plungers (cant remember the brand). but the other epoxy that i have used would not stick to metal real good. it would stick but you could peal it off. it got replaced with jb weld because it would hold better. then the jb weld got replaced with JB weld kwik. as i hated waiting for 24 hrs for it to set up. most of the time the handle would shift or something be for it set up. but this stuff is a dream. its very sticky and not to thick or runny. it sets in about 5 min and its not dark but a light almost white but in thin sections it looks quite clear. so far i love this epoxy it seams very strong and durable. It seams very chemical resistant from what i have read on it. here are some picture of my new toy. I'm going to be doing some testing on it to see how it really holds up.

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That's just like the gun I use with my Loctite E120HP, except I also use the spiral mixing nozzles that waste a little glue but give you a perfect mix every time with no effort.

I think the gun was about $30 from Mcmaster Carr when I placed the first order.
 
Dan Pierson said:
That's just like the gun I use with my Loctite E120HP, except I also use the spiral mixing nozzles that waste a little glue but give you a perfect mix every time with no effort.

I think the gun was about $30 from Mcmaster Carr when I placed the first order.
Click to expand...

ya i have some of the nozzles as well. thy are cool when you need to pump epoxy into a hole.
 
I thought that the consensus was that 5 min epoxys were not as good as the slower curing ones ?
 
Not that it will be a problem with most knives, but the chart shows very poor moisture resistance at room temperature.I would not use it on anything that was going to get wet, like kitchen cutlery.
Stacy
 
I use these guns regularly at work, with various types of Araldite. For the most reliable result, after the mixed epoxy has reached the end of the mixing nozzle, give it a couple of more squeezes. The first few inches tend to be not as well mixed as the rest. Sounds a bit wasteful, but having your scales come off is much more costly....
Also, don't squeeze too hard, because it is possible to push the epoxy past the seals in the plungers, which really messes up the gun.
After you're done, just leave the nozzle on (hang the gun on the edge of your trashcan because it will leak a few drops) and replace it right before the next use. Using the cap can create some problems with fouling up the holes with half-cured epoxy.

Cheers Rody
 
Can you guys think of something that 3M doesn't have their fingers in?

That has got to be some bullet proof stock. Jeezzzzz.
 
bladsmth said:
Not that it will be a problem with most knives, but the chart shows very poor moisture resistance at room temperature.I would not use it on anything that was going to get wet, like kitchen cutlery.
Stacy
Click to expand...

To me, that would be a HUGE problem on any knife. I'm trying to learn to make my mechanical joints as strong as possible and consider epoxy to be mostly a sealant.
 
Loctite E120-HP. The cartridge looks just like the stuff you got but this was one of the winner of the glue wars. Tracy doesn't carry it because most makers weren't interested in having to buy the gun but it works very well.
 
Hey JT

Test that stuff against the 330 depend on a full tang. I have a nice piece of handle material that says the 330 wins. ;)

Rob!

btw, we don't sell 330 depend. This is a user opinion - not a dealer opinion.
 
My *guess* is, the metered cartridge adhesives like the one JT found are the best in their designed for environment. These are niche products. One may be for mounting speaker magnets and will take vibrations, another for mounting motor magnets to tolerate heat and another may be designed for mounting jewelery findings and stones.

From looking into this stuff back then, the performance specs of these expensive industrial specialty adhesives was better, on the average than the typical 2part stuff we use.

Maybe it's changed now but at the time of the glue wars tests, nearly everyone balked at paying $30 to $40 for a dispenser gun, including me. On the other hand, the adhesive used in constructing a knife is usually the least expensive component and most often over looked. I'd also say it is the most prone to failure part of the knife. Spending another dollar or two per knife on a better adhesive is probably worth it. I don't carry any cartridge adhesives but I'll look into it again if there is an interest.

I know it's been said before but it's worth repeating, a great surface prep (clean from oils, gunk, etc and sand blasted joint surfaces) with an 'average' glue will outperform the very best adhesive with poor surface prep (oily or not 'roughed up' surface).
 
Mcmaster sells a dispenser for the loctite cartridges for $26, I do plan on making a purchase in a couple weeks or so to try the 120hp.
 
tmickley said:
My *guess* is, the metered cartridge adhesives like the one JT found are the best in their designed for environment. These are niche products. One may be for mounting speaker magnets and will take vibrations, another for mounting motor magnets to tolerate heat and another may be designed for mounting jewelery findings and stones.
Click to expand...

Not quite. If you take Araldite 2011 for a slow setting (we use a closer tolerance version called 2030), 2014 for a faster setting or 2012 for a fast setting general purpose epoxy, you're good....

Cheers Rody
 
Rody said:
Not quite. If you take Araldite 2011 for a slow setting (we use a closer tolerance version called 2030), 2014 for a faster setting or 2012 for a fast setting general purpose epoxy, you're good....

Cheers Rody
Click to expand...

not to be rude, but respectfully, you are aren't quite accurate on this. Take a look at the spec's (peel strength, temp range, etc) of the Araldite adhesives and compare it to some of the industrial adhesive methacrylates or anerobic's. Aralddite has a low 2k range for peel strength which is typical of general purpose adhesives. Most of the industrial metered cart adhesives are in the 3k to 4k range. The temp range of the Araldite at 175F is on the low side of performance. You would really like to see something above 200 and preferably above boiling temp. Araldite appears to be a decent 2 part epoxy and I'm not knocking your choice of adhesive but it isn't up to the performance of some of the specialty industrial stuff. If I have mis-read your post, my apologies.
 
tmickley said:
not to be rude, but respectfully, you are aren't quite accurate on this. Take a look at the spec's (peel strength, temp range, etc) of the Araldite adhesives and compare it to some of the industrial adhesive methacrylates or anerobic's. Aralddite has a low 2k range for peel strength which is typical of general purpose adhesives. Most of the industrial metered cart adhesives are in the 3k to 4k range. The temp range of the Araldite at 175F is on the low side of performance. You would really like to see something above 200 and preferably above boiling temp. Araldite appears to be a decent 2 part epoxy and I'm not knocking your choice of adhesive but it isn't up to the performance of some of the specialty industrial stuff. If I have mis-read your post, my apologies.
Click to expand...

Then I must have misread your post. I thought you were trying to say that these cartridges were only provided for highly specialized types of adhesive, so I provided some GP epoxies that work with that gun. You are completely correct in saying that there are much stronger epoxies out there (Stycast 2850FT for instance, insanely strong (up to 28k in compression, peel not specified), but brittle).
Also, as always, your intended use is all that matters. E.g. 2014 has a Tg of 80C which I believe is perfectly useable as long as you don't boil your blades (they'd probably still hold up since it can be used up to 120C, but at highly diminished strength)...Ymmv etc

Cheers Rody
 
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