[Ansteorra-archery] Question on Glue

[Danny Miller]

Epoxy should never be "modified" by changing the ratio.  All it does is 
weaken the final product, as there will be some amount of polymer with 
nothing to combine with.  It should not be used to attempt to modify the 
curing time, all it really means is it never cures, it may be less rigid 
but far weaker, bordering on nonstructural gunk.

Many epoxy systems have preferred to use the term "Part A" and "Part B" 
to avoid the assumption that it might work that way.  There's really 
only a small window of a few % over which the ratio can vary before the 
product is adversely affected, most "pros" doing composite work go by 
weight because it's more accurate than volume to measure consistently.

Epoxy cures much slower in cold weather, but it becomes more viscous as 
well.  When soaking into something is needed, sometimes a heat gun is 
used instead because the thinner viscosity gains more penetration than 
is lost due to short curing time.  You can't do this with the 5-min 
stuff, it will simply flash over, and the extra heat added from the 
rapid chemical reaction may even cause it to burn (well, bubble and 
smolder and produce a damaged product).  It's almost beside the point 
because there is zero "soaking" of epoxy into UHMW.  None.  At all.  It 
flows over the features and mechanically locks against them in some way, 
yes, but absolutely does not penetrate the surface regardless of viscosity.

Epoxy does not dry- it cures, there is no solvent at all.  Some epoxy 
types are stiffer than others.  Typically the 5-min stuff does cure 
pretty stiff.

Danny

On 2/10/2012 3:47 PM, Doug Copley wrote:
> I have also used Loctite, 2 part Epoxy, 60 min ... NOT the 5 min type. 
> I also mix it a little light on the hardner so that it drys slower and 
> is less brittle.
>
> I get it at Lowes and I believe that Home Depot also carries it.
>
> Vincenti
>
> On 2/10/2012 3:37 PM, John Reuter wrote:
>> If you find any "welder" please post where you found it!
>>
>> Brian. (<0>_<0>) still looking !
>>
>> Sent from my iPhone
>>
>> On Feb 10, 2012, at 3:18 PM, "Sher M" <runa.herd at earthlink.net
>> <mailto:runa.herd at earthlink.net>> wrote:
>>
>>> We used E6000. But I was told Welder was better. It isn't available at
>>> Lowe's, Home Despot, or True Value Hardware, at least not in the
>>> Conroe area. I went to every since one and yes at every single one
>>> after I said "it isn't J B Weld but Welder" they took me to the glue
>>> aisle and pointed to the JB Weld.
>>> Runa
>>>
>>>     ----- Original Message -----
>>>     *From:* Erin Scheffler <mailto:escheffle at hotmail.com>
>>>     *To:*
>>> <mailto:ansteorra-archery at lists.ansteorra.org>ansteorra-archery at lists.ansteorra.org
>>> <mailto:ansteorra-archery at lists.ansteorra.org>
>>>     *Sent:* Friday, February 10, 2012 2:40 PM
>>>     *Subject:* [Ansteorra-archery] Question on Glue
>>>
>>>     Hi,
>>>
>>>     I am getting ready to put together several dozen bolts for Gulf
>>>     and had a quick question. I had previously been using Goop to glue
>>>     together the arrows and someone at BAM mentioned there was a
>>>     better brand, I want to say it was called Welder- but can't
>>>     remember. Does anyone have any suggestions?
>>>
>>>     Thanks,
>>>     Bridget
>>>
>>>     
>>> ------------------------------------------------------------------------ 
>>>
>>>
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