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Author Topic: Poxy epoxy (faulty?)  (Read 4015 times)

NFMike

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Poxy epoxy (faulty?)
« on: September 28, 2012, 11:44:44 pm »

The only 'slow' epoxy I have found locally is the B&Q Repositionable 15 min stuff. Everywhere and the pound shop has 5 minute stuff, but as you will know some tasks need a bit longer to get everything together. I had a couple of packs from the local B&Q, but then they were oos for a while. The other day they had some more so I got another pack which I started using today.

And after just a few minutes the darned stuff was setting - and fast! I hadn't even finished applying it, so I stopped and scraped off what was on before it really set up.
Long story short I then treated it as 5 minute (ie. didn't hang about) and j-u-s-t managed to get the stuff on and the parts mated before it set up. And then the same the other side (where I actually used only about 80% hardener) with the same result.

So I'm thinking this batch is maybe a load of 5 minute stuff that's been packed wrongly. Which probably means the rest of the packs in the store are faulty too. I suppose I'll have to mail order some - at 15p a mile it's not worth driving all over the county in search of the stuff :(

Anyone had experience of this, or know a way to slow 5 min stuff down - but waiting till January and opening all the windows is not an option, thanks for the offer anyway :)

Kim

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Re: Poxy epoxy (faulty?)
« Reply #1 on: September 29, 2012, 12:13:38 am »

Anyone had experience of this, or know a way to slow 5 min stuff down - but waiting till January and opening all the windows is not an option, thanks for the offer anyway :)

best way (but you have to buy in large quantities ) is to buy epoxy from your local grp supplier ... sure you have to buy in 1kg amounts but they pay attention to shelf life and your free to, thicken, thin reduce or increase the set times.

Another overlooked adhesive is polyester resin .. thicken, thin and/or pigment...

Sometimes cheap/easiest sourced isn't the best....

Regards,
Kim
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triumphjon

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Re: Poxy epoxy (faulty?)
« Reply #2 on: September 29, 2012, 08:25:50 am »

i often get mine from wilkinsons  , they sell both normal and five min types in tubes which normally cost a little under three pounds , another source could be the robert dyas chain ! jon
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unbuiltnautilus

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Re: Poxy epoxy (faulty?)
« Reply #3 on: September 29, 2012, 10:53:29 am »

Sunlight and/or heat seem to decrease working times considerably. I have used Zpoxy 5 minute in strong and hot sunlight, it started to set after a couple of minutes. Within 5 minutes any repositioning needed the use of a hammer and chisel. I now do all my epoxy and filler work in the shade. As an aside, cheap epoxy is usually just that...cheap.
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DickyD

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Re: Poxy epoxy (faulty?)
« Reply #4 on: September 29, 2012, 11:16:56 am »

I never buy cheap epoxy, believing you get what you pay for.

I use Zap Z-Poxy 30 Minute Formula 8oz Set  £12.20 or Zap Z-Poxy 5 Minute Formula 8oz Set £12.20

Never a problem.

http://www.cornwallmodelboats.co.uk/acatalog/epoxy_glues.html
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TheLongBuild

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Re: Poxy epoxy (faulty?)
« Reply #5 on: September 29, 2012, 11:26:16 am »

There is always FiveStar StarLoc adhesives based in Runcorn


http://www.glue-shop.com/

unbuiltnautilus

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NFMike

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Re: Poxy epoxy (faulty?)
« Reply #7 on: September 29, 2012, 09:20:01 pm »

Sunlight and/or heat seem to decrease working times considerably. I have used Zpoxy 5 minute in strong and hot sunlight, it started to set after a couple of minutes. Within 5 minutes any repositioning needed the use of a hammer and chisel. I now do all my epoxy and filler work in the shade. As an aside, cheap epoxy is usually just that...cheap.
Heat certainly does, but maybe UV does too. I did wonder about the nearby compact flourescents, but I'm sure I've used the stuff in the same location before.

NFMike

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Re: Poxy epoxy (faulty?)
« Reply #8 on: September 29, 2012, 09:24:50 pm »

There is always FiveStar StarLoc adhesives based in Runcorn
http://www.glue-shop.com/

Yes, I think I may have to buy in bigger quantities, though I suspect I may be nearing the end of my current high volume needs. Someone mentioned shelf life earlier - what is the typical shelf like for this stuff?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=230665084710&ssPageName=STRK:MESE:IT
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unbuiltnautilus

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Re: Poxy epoxy (faulty?)
« Reply #9 on: October 01, 2012, 11:11:36 am »

Yes, I think I may have to buy in bigger quantities, though I suspect I may be nearing the end of my current high volume needs. Someone mentioned shelf life earlier - what is the typical shelf like for this stuff?
So are you mister.sticky?
For my sins..we are Mister Sticky.
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spearfish99

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Re: Poxy epoxy (faulty?)
« Reply #10 on: October 01, 2012, 11:22:15 am »

Have to agree with comment about using the cheap epoxy glues, they really don't work too well a lot of the time.

While it is a bit expensive, I always stick to (sorry!) Araldite, in both the slow and 5 minute versions, depending on what I am doing. When that goes off, takes a bomb to move .
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Kim

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Re: Poxy epoxy (faulty?)
« Reply #11 on: October 01, 2012, 12:09:50 pm »

Someone mentioned shelf life earlier - what is the typical shelf like for this stuff?
So are you mister.sticky?

Hi,
Expiry date is usually marked on the pot.
I believe the shelf life (from factory to use) is between 12 months & 24months depending on the epoxy type... don't quote me on that though.

Regards,
Kim
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