Glueing PCB's Together

[Jim Yanik]

Good idea..
I have lots of adhesive vinyl graphics material here that I can put on
the copper to keep the epoxy spill over away..
D from BC

you have to rough up the unclad PCB surface if you want the new epoxy to
bond to it.

 

[Michael A. Terrell]

Which reminds me...
I put my heat sink grease, rosin and silicone in medical syringes.
D from BC

What took you so long? I was using syringes 35 years ago.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Rich Grise]

you have to rough up the unclad PCB surface if you want the new epoxy to
bond to it.

It'd also be nice to have a big press to keep pressure on the assembly
while the epoxy cures, and maybe even to keep it flat.

Cheers!
Rich

 

[Rich Grise]

Which reminds me...
I put my heat sink grease, rosin and silicone in medical syringes.

In the US, you can't get medical syringes without a prescription, unless
you're on good terms with the local pusher. ;-)

Thanks,
Rich

 

[D from BC]

It'd also be nice to have a big press to keep pressure on the assembly
while the epoxy cures, and maybe even to keep it flat.

Cheers!
Rich

Sometimes I use lead-acid batteries or a big bucket of water as a
weight.
Also..I've glued other stuff together using thick glass plates with
clamps.. Good flatness and heavy.
D from BC

 

[D from BC]

In the US, you can't get medical syringes without a prescription, unless
you're on good terms with the local pusher. ;-)

Thanks,
Rich

Over here.. I can get the syringes... but my supplier doesn't carry
the twist on needle tips..
As a practical joke, the next time I buy syringes ...I'll do lots of
shaking
"H hhh hhhh ow www m mmmmm uch?"
D from BC

 

[krw]

In the US, you can't get medical syringes without a prescription, unless
you're on good terms with the local pusher. ;-)

You can buy syringes, just not the needles.

 

[JackShephard]

You can buy syringes, just not the needles.

That depends on what state one lives in, KiethKeithStain. Is there
anything that you *do* have a clue about?

 

[Jim Yanik]

Sometimes I use lead-acid batteries or a big bucket of water as a
weight.
Also..I've glued other stuff together using thick glass plates with
clamps.. Good flatness and heavy.
D from BC

I know that in gluing wood with epoxy,too much pressure clamping squeezes
out too much epoxy and the joint is weaker due to glue starvation.

 

[krw]

That depends on what state one lives in, KiethKeithStain. Is there
anything that you *do* have a clue about?

MassivelyWrong, strikes again.

 

[Jim Yanik]

Over here.. I can get the syringes... but my supplier doesn't carry
the twist on needle tips..
As a practical joke, the next time I buy syringes ...I'll do lots of
shaking
"H hhh hhhh ow www m mmmmm uch?"
D from BC

Oral syringes are cheap at drugstores,readily available.
You don't need a needle for glue.
the object is precise measurement of resin/hardener,important for a good
cure. Actually,its better to use less hardener than too much.

 

[Jim Yanik]

You can buy syringes, just not the needles.

ORAL syringes. for giving medicine to kids.

 

[krw]

ORAL syringes. for giving medicine to kids.

Glue syringes, for what else...

http://woodworker.com/cgi-bin/FULLPRES.exe?PARTNUM=178-001

 

[Jasen]

But I like the cool factor of an anaerobic adhesive.
I have some left over Loctite threadlocker for nults and bolts..
No mixing...
Uncured portion is cleaned away.
Nice flow.
Clueless it it'll work which makes it fun

If you're going to use that stuff you may as well just use super glue.

Super glue has good dilectric qualities (I've used it for EHT cable repair
on monitors)

The polyester resin + hardener I thought would be a cheapass
alternative to epoxy..But I'm using such small quantities..so epoxy
rules..

I expect that in quantity the price is similar for either product.


Bye.
Jasen

 

[D from BC]

I know that in gluing wood with epoxy,too much pressure clamping squeezes
out too much epoxy and the joint is weaker due to glue starvation.

I've been thinking about that...
I have 0.1mm glass micropheres to control the bond thickness if
needed.
For clamping...I've decided to use ceramic magnets.
D from BC

 

[joseph2k]

In the US, you can't get medical syringes without a prescription, unless
you're on good terms with the local pusher. ;-)

Thanks,
Rich

Actually you can buy industrial (non-sterile) syringes and blunt needles in
most big cities and through Internet delivered most anywhere. Where there
is decent industry, you can find them over the counter. (in the US and
Canada, at least, maybe most of Europe as well)

 

[joseph2k]

Sounds good, but Bondo was all I could find in 1970. Epoxy wasn't
easy find, back then.

Gee, i was using epoxy (over the counter everywhere, at the time and place)
in the middle 1960's. Then again that was in San Jose, CA, USA; later to
be known as part of Silicon Valley.

 

[Michael A. Terrell]

Gee, i was using epoxy (over the counter everywhere, at the time and place)
in the middle 1960's. Then again that was in San Jose, CA, USA; later to
be known as part of Silicon Valley.

I grew up in a steel town of 50,000, where the only locally available
epoxy was in paint. I could have ordered it and waited weeks, but the
equipment was needed the next day and the can of Bondo was already
sitting in the garage at home. About six months after I did that
repair, two part epoxy was finally available in a local store.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Rich Grise]

Actually you can buy industrial (non-sterile) syringes and blunt needles
in most big cities and through Internet delivered most anywhere. Where
there is decent industry, you can find them over the counter. (in the US
and Canada, at least, maybe most of Europe as well)

OOpps!

OK, www.mcmaster.com has them.

I've learned something today, guess I can go back to bed. ;-)

Thanks!
Rich