Strongest 2-aprt Epoxy Suggestion

[kosPap]

hi all!

Since i cannot find strap wrenches locally i am gonna order them from Ebay/US

So it is a good chance to buy JBWeld and the strongest 2 part epoxy in the US market

The best I can find here in Greece is the Araldit in the Red packaging....

Any chance there are better/stronger epoxies out there?

And what can I expect i terms of elasticity of the glue film?

tnx a bunch, kostas

 

[CKOD]

It depends on what you mean by strong In terms of sheer tensile strength, there is better then JB weld, but its more brittle. And also much harder to find as they are geared more towards the "industrial" business then consumers.

For a general all around tough and strong epoxy, I would go with JB weld, (get some JB quick too if for faster curing) It comes in larger tubes, called industro-weld also, which are probably cheaper per oz of epoxy.

JB weld isnt "elastic" in the common sense of being stretchy or squishy, but like I said above, its very tough (not brittle) and should hold up well, even if you have a thicker bond line.

I also use a lot of devcon 5 minute epoxy, but it can only be used in a *thin* layer before it overheats itself as it cures (if it yellows as it cures, it's overheated itself) And its temperature resistance and brittleness are worse then that of JB weld, but where that doesnt matter, and the 5 minute set time does, its great.

 

[Th232]

Personally I prefer Uhu + Endfest 300. Note in particular the strength when you cure it at a higher temperature. I'm not sure whether you're using this to close a flashlight head or something, but curing at 70 C gives you a nominal strength of 2000 N/cm^2 for combined tension and shear strain, or around 200 kg/cm^2. If you can go up to 100 C, 2500 N/cm^2, if 180 C, the datasheet says 3000 N/cm^2, or around 300 kg/cm^2. You can also vary the amount of hardener and binder to produce a more stiffer or more flexible end result.

 

[CKOD]

Personally I prefer Uhu + Endfest 300. Note in particular the strength when you cure it at a higher temperature. I'm not sure whether you're using this to close a flashlight head or something, but curing at 70 C gives you a nominal strength of 2000 N/cm^2 for combined tension and shear strain, or around 200 kg/cm^2. If you can go up to 100 C, 2500 N/cm^2, if 180 C, the datasheet says 3000 N/cm^2, or around 300 kg/cm^2. You can also vary the amount of hardener and binder to produce a more stiffer or more flexible end result.

I love working with flashlight pills, and LEDs, it makes it so easy to speed the cure when the part is self heating! Curing the A.S. holding down my SST-90? hook it up to a power supply and run it at ~4-500 mA so it warms itself up a bit:laughing:

 

[precisionworks]

devcon 5 minute epoxy

+1

ITW Devon is the Holy Grail of industrial adhesives but availability in Greece ... maybe.

http://www.devcon.com/products/products.cfm?market=Maintenance & Repair

My favorite (out of a few dozen choices) is HP250 (250°F is maximum service temp). Bonds everything except Teflon & oil

http://www.devcon.com/prodfiles/pdfs/fam_tds_185.pdf

5 Minute Gel isn't bad for quick repairs, but not as strong & not as high a temp rating (200°F).

http://www.devcon.com/prodfiles/pdfs/fam_tds_176.pdf

If you have a specific application, you may want to email or phone their tech support staff: http://www.devcon.com/corporate/worldwide.cfm

 

[CKOD]

Bonds everything except Teflon & oil

I had a real mindf*** recently when I mixed some envirotex lite 2 part coating with some superlube PTFE(teflon) grease. even as much as 50/50 teflon grease to mixed epoxy, it would still set into a chunk of slppery plastic (not greasy, just slick from the teflon!) How you mix grease and glue and dont just get a mess I dont know but it was pretty neat. :laughing:

 

[kosPap]

Devcon it is..now to open a new browser window for ebay...

thanks guys!

 

[koala]

Try automotive store for strap wrenches they are common tools for removing oil filters.

 

[precisionworks]

Devcon it is..

Pretty good stuff. The parent company ITW also makes the Accu-Lube applicator & lubricant that WQuiles & I have on our lathes.

A customer had me machine a prototype for an aluminum water pump, using an existing pump body as a starting point. To get the "new" pump inner profile required substantial material build up. Devcon Aluminum Putty (F) was used. Pricey at $50 USD per 1# kit, but it worked perfectly. Cleaned the surface to which the putty would be applied, roughed it up, applied an excess of putty & let it cure. Machined it using inserted carbide tooling on the lathe & mill. Came out good enough that the proto was sent to the mold maker to build the casting dies

http://www.devcon.com/products/products.cfm?market=Maintenance%20%26%20Repair&family=Aluminum%20Putty%20%28F%29

I charged the customer around $500, which seemed like a lot. The customer told me he'd planned to spend between $1500-$3000 for a proto, so he was thrilled. The final casting mold, multi cavity, was something over $100k. Should have charged more on that job

 

[kosPap]

Try automotive store for strap wrenches they are common tools for removing oil filters.

sorry no good in Greece.....there are ones but they are larger tahn needed and metal!

Have already found stores in ebay, that sell both strap wrenches and JBWeld...now I will have to check if they carry Devcon too...(possibly yes)

 

[TECENG]

+1 on the HP250

You can try McMaster Carr for the Devcon stuff. I know they ship Internationally but the shipping might be $$

 

[precisionworks]

try McMaster Carr for the Devcon stuff.

They are my "regular" source for Devcon. Enco & Amazon also sell HP250. It will probably boil down to who is most cooperative on shipping to Greece.

The company I work for does some international shipping & we use USPS Global Express Guaranteed (GXG). The package starts at the US Post Office, gets handed to FedEx for the international shipping, and is final delivered by FedEx.

Both the US Post Office & FedEx are so screwed up that they have never yet delivered a package within the guaranteed three days. We've gotten a full refund, passed on to the customer, on every GXG shipment FREE SHIPPING !!!

 

[jasonck08]

Both the US Post Office & FedEx are so screwed up that they have never yet delivered a package within the guaranteed three days. We've gotten a full refund, passed on to the customer, on every GXG shipment FREE SHIPPING !!!

Really... thats great! But GXG is SO expensive, if they do end up delivering in their guaranteed time window. It starts at like what $80ish or something?

Also, how many GXG shipments have you done?

 

[precisionworks]

how many GXG shipments have you done?

Seven so far, just about one every month, sometimes two. The Post Office & FedEx are batting 1.000 so far, meaning they have yet to deliver one within the guaranteed window & the customer gets a full refund

Here's one I just looked up, not a difficult one at all ... Illinois, USA to AYLESBURY, GREAT BRITAIN. Sent 08/24, delivered 09/01. Seven days total & full refund.

Want another ... Illinois USA to BAEUMCHEN,
GERMANY. Sixteen days & full refund. A boat would have delivered faster :devil:

You may have bad luck, get a clerk at the Post Office who understands GXG, and receive the shipment on time. I printed out the checklist for the post office that starts the shipment & it contains half a dozen "must do" items. Gave this list to the clerk who took the package, she glanced at it & handed it back to me without reading any of it.

No wonder they can't make a profit. That clerk earns over $80k to sit on her ... hands and do not too much. But the service, so far, has been free.

 

[VegasF6]

Oooh. Glues. I like glues
You should let one of us put together a horribly expensive adhesive box and send it to you

Seriously I don't know why I have a glue fetish, but here's what you need

Devcon 2 ton epoxy
E6000
Sumo Glue
JB Stick
Kneadatite
Magic Putty
JB weld
3M VHB (ok, not a glue, a tape but still an adhesive)
glue dots
blue tac or yellow handy tac
loctite super glue in the brush on container
various hot glues
Arctic Alumina adhesive
Fujik Silicone Thermal Glue (can't help it I like this stuff)
5 minute araldite (this stuff isn't that great but it is so conveniant, quick and neat compared to epoxy in the syringe containers) and isn't too picky about ratio
3M high strength 90 spray adhesive
Durhams Rock Hard Water putty