Hot melt glue sticks?

[Charlie+]

On Sun, 8 Mar 2015 16:16:30 -0700 (PDT), captainvideo462009@gmail.com
wrote as underneath :

snip

With plexiglass for instance what would be an appropriate solvent? Lenny

For perspex etc. Chloroform. C+

 

[Cydrome Leader]

whit3rd <whit3rd@gmail.com> wrote:

On Thursday, March 5, 2015 at 12:37:26 PM UTC-8, Michael Black wrote:
On Thu, 5 Mar 2015, Bob E. wrote:

recycle code sez HDPE

Yeah, high-density polyethylene.

So more plastic welding than gluing...

And there's that stuff, I can't remember what, that
"glues" by melting the plastic together, rather than
gluing. I think it had "methyl" in the name.

Lots of cold-weld 'glue' for plastics (acrylic and polycarbonate, and
maybe others) is based on methylene chloride. That is also sold
(or used to be) in paint remover and carburetor cleaner. It's
best used with ventilation (outdoors), and isn't generally recommended
for home use.

I just ordered some yesterday. Weld-on is the major brand in the US. I was
told by a plastic working pro that Weld-on #4 is the best for generic use
if you're workign with acrylic the first time. Different plastics will
require different solvents.

There are modifiers in plastic welding solvents to change drying time,
viscosity etc.

 

[Phil Hobbs]

On 3/18/2015 9:05 PM, Cydrome Leader wrote:

whit3rd <whit3rd@gmail.com> wrote:
On Thursday, March 5, 2015 at 12:37:26 PM UTC-8, Michael Black wrote:
On Thu, 5 Mar 2015, Bob E. wrote:

recycle code sez HDPE

Yeah, high-density polyethylene.

So more plastic welding than gluing...

And there's that stuff, I can't remember what, that
"glues" by melting the plastic together, rather than
gluing. I think it had "methyl" in the name.

Lots of cold-weld 'glue' for plastics (acrylic and polycarbonate, and
maybe others) is based on methylene chloride. That is also sold
(or used to be) in paint remover and carburetor cleaner. It's
best used with ventilation (outdoors), and isn't generally recommended
for home use.

I just ordered some yesterday. Weld-on is the major brand in the US. I was
told by a plastic working pro that Weld-on #4 is the best for generic use
if you're workign with acrylic the first time. Different plastics will
require different solvents.

There are modifiers in plastic welding solvents to change drying time,
viscosity etc.

The stuff I've used is called Harvasolv, and is guaranteed to give you a
horrible headache in 3 minutes of use.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net

 

[Cydrome Leader]

Phil Hobbs <hobbs@electrooptical.net> wrote:

On 3/18/2015 9:05 PM, Cydrome Leader wrote:
whit3rd <whit3rd@gmail.com> wrote:
On Thursday, March 5, 2015 at 12:37:26 PM UTC-8, Michael Black wrote:
On Thu, 5 Mar 2015, Bob E. wrote:

recycle code sez HDPE

Yeah, high-density polyethylene.

So more plastic welding than gluing...

And there's that stuff, I can't remember what, that
"glues" by melting the plastic together, rather than
gluing. I think it had "methyl" in the name.

Lots of cold-weld 'glue' for plastics (acrylic and polycarbonate, and
maybe others) is based on methylene chloride. That is also sold
(or used to be) in paint remover and carburetor cleaner. It's
best used with ventilation (outdoors), and isn't generally recommended
for home use.

I just ordered some yesterday. Weld-on is the major brand in the US. I was
told by a plastic working pro that Weld-on #4 is the best for generic use
if you're workign with acrylic the first time. Different plastics will
require different solvents.

There are modifiers in plastic welding solvents to change drying time,
viscosity etc.


The stuff I've used is called Harvasolv, and is guaranteed to give you a
horrible headache in 3 minutes of use.

I had the same issue just cutting acrylic plastic. It gives off a
superglue type smell. The solvents are even worse.

 

[Michael Black]

On Fri, 20 Mar 2015, Cydrome Leader wrote:

Phil Hobbs <hobbs@electrooptical.net> wrote:
On 3/18/2015 9:05 PM, Cydrome Leader wrote:
whit3rd <whit3rd@gmail.com> wrote:
On Thursday, March 5, 2015 at 12:37:26 PM UTC-8, Michael Black wrote:
On Thu, 5 Mar 2015, Bob E. wrote:

recycle code sez HDPE

Yeah, high-density polyethylene.

So more plastic welding than gluing...

And there's that stuff, I can't remember what, that
"glues" by melting the plastic together, rather than
gluing. I think it had "methyl" in the name.

Lots of cold-weld 'glue' for plastics (acrylic and polycarbonate, and
maybe others) is based on methylene chloride. That is also sold
(or used to be) in paint remover and carburetor cleaner. It's
best used with ventilation (outdoors), and isn't generally recommended
for home use.

I just ordered some yesterday. Weld-on is the major brand in the US. I was
told by a plastic working pro that Weld-on #4 is the best for generic use
if you're workign with acrylic the first time. Different plastics will
require different solvents.

There are modifiers in plastic welding solvents to change drying time,
viscosity etc.


The stuff I've used is called Harvasolv, and is guaranteed to give you a
horrible headache in 3 minutes of use.

I had the same issue just cutting acrylic plastic. It gives off a
superglue type smell. The solvents are even worse.

In that case, isn't it because the heat from the saw tends to melt the
plastic (or at least the debris from the cutting of the plastic, and then
it fuses back together when cooled off.

I know there are tricks to cutting plastic like that, even if I can't
remember them.

Michael

 

[Mike]

On Fri, 20 Mar 2015 14:13:05 -0400, Michael Black wrote:

In that case, isn't it because the heat from the saw tends to melt the
plastic (or at least the debris from the cutting of the plastic, and
then it fuses back together when cooled off.

I know there are tricks to cutting plastic like that, even if I can't
remember them.

Michael

Doing it under water, perhaps?

Mike.