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Jim Thompson
Guest
Sun Jan 22, 2012 6:19 pm
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at
http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Oppie
Guest
Sun Jan 22, 2012 7:13 pm
"Jim Thompson" <To-Email-Use-The-Envelope-Icon_at_On-My-Web-Site.com> wrote in
message news:82hoh7dlg4ne9o47s17ckigg20jkv1s9ch_at_4ax.com...
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
Been a while since I last used it but I don't recall it being runny. If you
can let it sit for a while before applying - towards the end of its working
time - and then apply, that might be better. Some epoxies get weaker if you
don't mix in the specified ratio. Depends on the chemistry.
Jim Thompson
Guest
Sun Jan 22, 2012 7:28 pm
On Sun, 22 Jan 2012 13:13:24 -0500, "Oppie" <Oppie_at_127.0.0.1> wrote:
Quote:
"Jim Thompson" <To-Email-Use-The-Envelope-Icon_at_On-My-Web-Site.com> wrote in
message news:82hoh7dlg4ne9o47s17ckigg20jkv1s9ch_at_4ax.com...
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
Been a while since I last used it but I don't recall it being runny. If you
can let it sit for a while before applying - towards the end of its working
time - and then apply, that might be better.
I'll try that... could be because it's _warm_ here ;-)
Quote:
Some epoxies get weaker if you
don't mix in the specified ratio. Depends on the chemistry.
Yep.
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at
http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
flipper
Guest
Sun Jan 22, 2012 8:39 pm
On Sun, 22 Jan 2012 10:19:43 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon_at_On-My-Web-Site.com> wrote:
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
Which flavor of the stuff were you using? I used the 'regular' and
don't recall it being runny.
NT
Guest
Sun Jan 22, 2012 9:01 pm
On Jan 22, 6:28 pm, Jim Thompson <To-Email-Use-The-Envelope-I...@On-My-
Web-Site.com> wrote:
Quote:
On Sun, 22 Jan 2012 13:13:24 -0500, "Oppie" <Op...@127.0.0.1> wrote:
"Jim Thompson" <To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> wrote in
messagenews:82hoh7dlg4ne9o47s17ckigg20jkv1s9ch_at_4ax.com...
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
Been a while since I last used it but I don't recall it being runny. If you
can let it sit for a while before applying - towards the end of its working
time - and then apply, that might be better.
I'll try that... could be because it's _warm_ here ;-)
Some epoxies get weaker if you
don't mix in the specified ratio. Depends on the chemistry.
Yep.
Never deviate from the corect ratio with epoxies. Its a misnomer to
call one fo the tubes hardener anyway.
NT
qrk
Guest
Sun Jan 22, 2012 9:21 pm
On Sun, 22 Jan 2012 11:01:40 -0800 (PST), NT <meow2222_at_care2.com>
wrote:
Quote:
On Jan 22, 6:28 pm, Jim Thompson <To-Email-Use-The-Envelope-I...@On-My-
Web-Site.com> wrote:
On Sun, 22 Jan 2012 13:13:24 -0500, "Oppie" <Op...@127.0.0.1> wrote:
"Jim Thompson" <To-Email-Use-The-Envelope-I...@On-My-Web-Site.com> wrote in
messagenews:82hoh7dlg4ne9o47s17ckigg20jkv1s9ch_at_4ax.com...
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
Been a while since I last used it but I don't recall it being runny. If you
can let it sit for a while before applying - towards the end of its working
time - and then apply, that might be better.
I'll try that... could be because it's _warm_ here ;-)
Some epoxies get weaker if you
don't mix in the specified ratio. Depends on the chemistry.
Yep.
Never deviate from the corect ratio with epoxies. Its a misnomer to
call one fo the tubes hardener anyway.
NT
JB Weld is pretty thick. We use it on vertical oriented parts.
There's a 5-minute version of JB Weld if that will help.
Tim Wescott
Guest
Sun Jan 22, 2012 10:54 pm
On Sun, 22 Jan 2012 10:19:43 -0700, Jim Thompson wrote:
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now you
can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
Don't you mess with the epoxy chemistry, Jim. You're an IC designer, not
an industrial chemist.
As pointed out, "hardener" is a misnomer. It's not quite "the other half
of the glue when finished", but it's pretty close. The Wikipedia entry
on epoxy is pretty educational.
Epoxies tend to be runny. They just aren't thixotropic by nature. Since
you want a thin glue layer anyway, the best way to deal with this issue
is to not use too much glue.
--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
Les Cargill
Guest
Sun Jan 22, 2012 10:56 pm
Jim Thompson wrote:
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
That doesn't sound right... should be the consistency of putty.
--
Les Cargill
Ian Field
Guest
Sun Jan 22, 2012 11:13 pm
"Les Cargill" <lcargill99_at_comcast.com> wrote in message
news:jfi0df$tin$1_at_dont-email.me...
Quote:
Jim Thompson wrote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
That doesn't sound right... should be the consistency of putty.
--
Les Cargill
He bought the enema compatible version.
Martin Riddle
Guest
Mon Jan 23, 2012 2:54 am
On Sun, 22 Jan 2012 10:19:43 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon_at_On-My-Web-Site.com> wrote:
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
Dont change the ratio, adding more harderner will make it more
brittle. The faster it cures the weaker the bond. Unless its a 5min
type.
Cheers
gregz
Guest
Mon Jan 23, 2012 4:46 am
Jim Thompson <To-Email-Use-The-Envelope-Icon_at_On-My-Web-Site.com> wrote:
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
I was Leary of strength when I hardened a puddle, then easily snapped it
when hard.
Greg
Robert Baer
Guest
Mon Jan 23, 2012 6:17 am
Jim Thompson wrote:
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
They have a quickset version that may be less runny.
Never tried it, but have the suspicion that it is not quite as spiffy
in strength.
Robert Baer
Guest
Mon Jan 23, 2012 6:19 am
Les Cargill wrote:
Quote:
Jim Thompson wrote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
That doesn't sound right... should be the consistency of putty.
--
Les Cargill
Well, yes, but..it flows quite a but during the "set" time, and so
seems to be runny; all relative (aunts, uncles, einstiens, etc).
Robert Baer
Guest
Mon Jan 23, 2012 6:21 am
Tim Wescott wrote:
Quote:
On Sun, 22 Jan 2012 10:19:43 -0700, Jim Thompson wrote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now you
can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
Don't you mess with the epoxy chemistry, Jim. You're an IC designer, not
an industrial chemist.
As pointed out, "hardener" is a misnomer. It's not quite "the other half
of the glue when finished", but it's pretty close. The Wikipedia entry
on epoxy is pretty educational.
Epoxies tend to be runny. They just aren't thixotropic by nature. Since
you want a thin glue layer anyway, the best way to deal with this issue
is to not use too much glue.
Epoxies do not tend to be runny; there is a brand called CantSag if i
remember correctly, and that is but one of three i found without looking
too hard.
mpm
Guest
Mon Jan 23, 2012 6:43 am
On Jan 22, 12:19 pm, Jim Thompson <To-Email-Use-The-Envelope-I...@On-
My-Web-Site.com> wrote:
Quote:
Just used some JB Weld to make a steel-to-steel joint.
Amazing stuff, took overnight to fully harden, but it's so hard now
you can barely scratch it.
Only issue... runny during application. Any fixes for that... maybe
more hardener than 1:1 ??
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon
athttp://www.analog-innovations.com| 1962 |
I love to cook with wine. Sometimes I even put it in the food.
You might also try:
http://www.marinetex.com/marinetexepoxyputty.html
Used it once on a very difficult vertical repair of a hinge that was
under high stress.
Worked amazingly well, actually.
For all I know, it might be the same stuff as JB Weld. ?
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