CA accelerator discoloration
 

I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?

Michael Koblic,
Campbell River, BC

CA accelerator discoloration
 

wrote:

I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?


Metal polish? Polishing compound?

CA accelerator discoloration
 

On Thu, 06 Dec 2012 23:19:14 -0500, "Michael A. Terrell"
wrote:


wrote:

I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?


Metal polish? Polishing compound?

Salt + lemon juice cleans it, but MAAS metal polish cleans and
protects from oxidizing again. Try that. About $5 for a tube not much
larger than your thumb, but it goes a long way. Works on most metals.
I've had luck with copper, brass, silver plate, aluminum (I think),
and stainless steel.

--
....in order that a man may be happy, it is
necessary that he should not only be capable
of his work, but a good judge of his work.
-- John Ruskin

CA accelerator discoloration
 

On 12/6/2012 9:00 PM, wrote:
I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?

Michael Koblic,
Campbell River, BC


Yeah, don't use the accelerator.

CA accelerator discoloration
 

On Thu, 06 Dec 2012 23:59:23 -0600, Richard
wrote:

On 12/6/2012 9:00 PM, wrote:
I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?

Michael Koblic,
Campbell River, BC


Yeah, don't use the accelerator.

What he said. Accelerator active ingredient is N,N-dimethyl
p-toluidene, a tertiary amine. Amines react with copper to form
quaternary amine complexes. In other words, they eat copper.

Pete Keillor

CA accelerator discoloration
 

On Fri, 07 Dec 2012 06:15:54 -0600, Pete Keillor wrote:

On Thu, 06 Dec 2012 23:59:23 -0600, Richard
wrote:

On 12/6/2012 9:00 PM, wrote:
I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?

Michael Koblic,
Campbell River, BC


Yeah, don't use the accelerator.

What he said. Accelerator active ingredient is N,N-dimethyl
p-toluidene, a tertiary amine. Amines react with copper to form
quaternary amine complexes. In other words, they eat copper.

Pete Keillor

Or at least go at it knowing that you're going to need to use a polishing
compound that's going to actually remove the material.

I wouldn't expect a CA to wood bond to be secure in the long run. If you
need strength, I think epoxy would be better, or maybe contact cement.

--
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?

Tim Wescott, Communications, Control, Circuits & Software
http://www.wescottdesign.com

CA accelerator discoloration
 

On Dec 7, 12:17*pm, Tim Wescott wrote:
On Fri, 07 Dec 2012 06:15:54 -0600, Pete Keillor wrote:
On Thu, 06 Dec 2012 23:59:23 -0600, Richard
wrote:

On 12/6/2012 9:00 PM, wrote:
I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?

Michael Koblic,
Campbell River, BC

Yeah, don't use the accelerator.

What he said. *Accelerator active ingredient is N,N-dimethyl
p-toluidene, a tertiary amine. *Amines react with copper to form
quaternary amine complexes. *In other words, they eat copper.

Pete Keillor

Or at least go at it knowing that you're going to need to use a polishing
compound that's going to actually remove the material.

I wouldn't expect a CA to wood bond to be secure in the long run. *If you
need strength, I think epoxy would be better, or maybe contact cement.

--
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?

Tim Wescott, Communications, Control, Circuits & Softwarehttp://www.wescottdesign.com- Hide quoted text -

- Show quoted text -

I'd use a silicone adhesive(or screws). Wood moves, copper doesn't, a
rigid bond is going to shear. Copper isn't going to stay shiny unless
you coat it with lacquer or wax.

Stan

CA accelerator discoloration
 

On 12/7/2012 2:10 PM, Stanley Schaefer wrote:
On Dec 7, 12:17 pm, Tim wrote:
On Fri, 07 Dec 2012 06:15:54 -0600, Pete Keillor wrote:
On Thu, 06 Dec 2012 23:59:23 -0600,
wrote:

On 12/6/2012 9:00 PM, wrote:
I am gluing some copper to wood with CA. Anyone knows how to get rid
of the white/blue/green discoloration that develops with an
accelerator? It disappears when washed with 99% isopropanol or acetone
but reappears after drying.

I understand that there may be a way to avoid getting the white stuff
by not using so much of the accelerator but is there any way to get
rid of it *after* the fact?

Michael Koblic,
Campbell River, BC

Yeah, don't use the accelerator.

What he said. Accelerator active ingredient is N,N-dimethyl
p-toluidene, a tertiary amine. Amines react with copper to form
quaternary amine complexes. In other words, they eat copper.

Pete Keillor

Or at least go at it knowing that you're going to need to use a polishing
compound that's going to actually remove the material.

I wouldn't expect a CA to wood bond to be secure in the long run. If you
need strength, I think epoxy would be better, or maybe contact cement.

--
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?

Tim Wescott, Communications, Control, Circuits& Softwarehttp://www.wescottdesign.com- Hide quoted text -

- Show quoted text -

I'd use a silicone adhesive(or screws). Wood moves, copper doesn't, a
rigid bond is going to shear. Copper isn't going to stay shiny unless
you coat it with lacquer or wax.

Stan


Which is why I keep recommending any of the many flavors of Goop.
Good strong flexible bond, cheap, easy cleanup.

For a job like this, Plumbers Goop - very low viscosity will make
for a smooth thin film.

Excellent bond.

CA accelerator discoloration
 

On Fri, 07 Dec 2012 14:48:26 -0600, Richard
wrote:

[...]

Which is why I keep recommending any of the many flavors of Goop.
Good strong flexible bond, cheap, easy cleanup.

For a job like this, Plumbers Goop - very low viscosity will make
for a smooth thin film.

Excellent bond.

It would have been my first choice but not feasible in this
application. The same reason why accelerator was desirable.

I changed the way I apply the accelerator and I no longer see the
discoloration and get a secure bond quickly. Problem solved.

Michael Koblic,
Campbell River, BC