Homebrew PCBs

I want to make a board holder out of plexiglass, but will need to do 
some gluing.  Since it will be fully immersed in etchant, what kind 
of glue can I use?  Will CA work?

Thanks,
 Phil

I would use epoxy adhesive.
I have changed all my CA use to this, i hate throwing away ca that got hard 
in the bottle.
no problem with this with 2 component epoxy, nearly infinite storage.

Best would be welding, consider it!

And PLEASE draw/describe what you want to build, I'm still not sure how to 
make it.
(Or if you finish fast some photos would do ;-) )

regards

ST

Oh, don't forget to roughen the plexi with sandpaper and degrease with 
alcohol where gluing!

On Tue, 25 Nov 2003 22:56:32 -0000, Moore <pminmo@...> wrote:

> I want to make a board holder out of plexiglass, but will need to do some 
> gluing.  Since it will be fully immersed in etchant, what kind of glue 
> can I use?  Will CA work?
>
> Thanks,
> Phil
>

> 
> And PLEASE draw/describe what you want to build, I'm still not sure 
how to 
> make it.
> (Or if you finish fast some photos would do ;-) )
>
See:
http://webpages.charter.net/pminmo/holder.png

The sides are 3/16 pvc rods I bought from a hobby shop.  The 
plexiglass is 1/8" I made my verticle tank out of.  The idea is by 
laminating three pieces of plexiglas together with the center 
narrower than the 2 outside pieces will create a groove to hold the 
board in.  The bottom piece is fixed.  i.e glued to the rods, the top 
piece has two holes bored into so it slides up and down the rods.  
One side ot the plexiglass will be tapped so a nylon bolt can be hand 
tightened to hold the top section down depending on size of the board.

Phil

They make a special solvent cement for Plexiglas (synonyms: 
Perspex, PMMA). It looks like a clear thick liquid and contains 
methylene chloride and some very volatile solvents. The bonds are 
strong enough to make joints for gluing edge on ( I've see fish 
tanks made from this stuff). I would be very surprised if the 
cured cement and/or the plastic will fail in ferric chloride. 
Find anyone who specalizes in plexiglas for the correct cement.

Adam

Moore wrote:

> I want to make a board holder out of plexiglass, but will need to do 
> some gluing.  Since it will be fully immersed in etchant, what kind 
> of glue can I use?  Will CA work?
> 
> Thanks,
>  Phil
> 
> 
> 
> Be sure to visit the group home and check for new Bookmarks and files:
> http://groups.yahoo.com/group/Homebrew_PCBs
> 
> To unsubscribe from this group, send an email to:
> Homebrew_PCBs-unsubscribe@yahoogroups.com
> 
>  
> 
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ 
> 
>

also check your local hobby shop for a product called
tenax 7r it is used for models but after buying some
low and behold it is the same exact thing as what i
already had for plexiglass so give it a try

--- Adam Seychell <adam_seychell@...> wrote:
> They make a special solvent cement for Plexiglas
> (synonyms: 
> Perspex, PMMA). It looks like a clear thick liquid
> and contains 
> methylene chloride and some very volatile solvents.
> The bonds are 
> strong enough to make joints for gluing edge on (
> I've see fish 
> tanks made from this stuff). I would be very
> surprised if the 
> cured cement and/or the plastic will fail in ferric
> chloride. 
> Find anyone who specalizes in plexiglas for the
> correct cement.
> 
> Adam
> 
> Moore wrote:
> > I want to make a board holder out of plexiglass,
> but will need to do 
> > some gluing.  Since it will be fully immersed in
> etchant, what kind 
> > of glue can I use?  Will CA work?
> > 
> > Thanks,
> >  Phil
> > 
> > 
> > 
> > Be sure to visit the group home and check for new
> Bookmarks and files:
> > http://groups.yahoo.com/group/Homebrew_PCBs
> > 
> > To unsubscribe from this group, send an email to:
> > Homebrew_PCBs-unsubscribe@yahoogroups.com
> > 
> >  
> > 
> > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/ 
> > 
> > 
> 
> 


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--- Adam SeSeychelladadameseychellahoo.com.auauwrote:
> They make a special solvent cement for Plexiglas
> (synonyms: 
> Perspex, PMPMMA 

Adam is absolutely right about PMPMMAeing the best,
but sometimes it can be hard to find. .An alternative
that has the same hahandlingharacteristics as silicon
glue (As far as how it handles when you apply it. When
it is dry, the characteristics are not like those of
silicon glue. The bond is retediouslytrong) is a
product known as "MARINE GOOP" and is made by a
company call Eclectic Products, Inc. When PMPMMAas
been hard to find, I'vevesed it with great success. 
I'veveade several tanks with it (The oldest one is 6
years old and still good as new). It is clear and as
soon as it dries, really strong. 

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I wouldn't use cyanoacrylate, either. If you can cut and sand the
pieces to fit very tightly together, solvent welding is the way to go.

Degrease before sanding! Otherwise the grease ends up in the sanded
scratches and can be very difficult to get out.

Plexi might be difficult to heat weld. It has a pretty narrow heat
band between where it softens to welding temp and where it starts to
bubble.

If you bend some of the pieces to shape, make sure they have no stress
in them. Plexi is very brittle and prone to fracture when solvent glue
is applied if there are -any- stresses. And prone to fracture slowly
over time from those stresses. I had a plexi case I made slowly crack
all the way across two of the bends over the course of a few months.

Please post pictures in the Files Section. I don't like the Photos
section because it resizes the pictures, if you upload larger only the
moderator and the person who posted them can see the full size version.

Steve

--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan
<stefan_trethan@g...> wrote:
> I would use epoxy adhesive.
> I have changed all my CA use to this, i hate throwing away ca that
got hard 
> in the bottle.
> no problem with this with 2 component epoxy, nearly infinite storage.
> 
> Best would be welding, consider it!
> 
> And PLEASE draw/describe what you want to build, I'm still not sure
how to 
> make it.
> (Or if you finish fast some photos would do ;-) )
> 
> regards
> 
> ST
> 
> Oh, don't forget to roughen the plexi with sandpaper and degrease with 
> alcohol where gluing!
> 
> 
> 
> 
> On Tue, 25 Nov 2003 22:56:32 -0000, Moore <pminmo@c...> wrote:
> 
> > I want to make a board holder out of plexiglass, but will need to
do some 
> > gluing.  Since it will be fully immersed in etchant, what kind of
glue 

> > can I use?  Will CA work?
> >
> > Thanks,
> > Phil
> >

Good tip! The straight solvent cement requires very close fitting
joints, the thick stuff does not.

You can make your own joint filling stuff by mixing some plexi chips
with the thin solvent cement. After it dries, the whole thing is just
plexiglass as if it had been cast that way so it will not fail in FeCl.

Steve

--- In Homebrew_PCBs@yahoogroups.com, Adam Seychell
<adam_seychell@y...> wrote:

> They make a special solvent cement for Plexiglas (synonyms: 
> Perspex, PMMA). It looks like a clear thick liquid and contains 
> methylene chloride and some very volatile solvents. The bonds are 
> strong enough to make joints for gluing edge on ( I've see fish 
> tanks made from this stuff). I would be very surprised if the 
> cured cement and/or the plastic will fail in ferric chloride. 
> Find anyone who specalizes in plexiglas for the correct cement.
> 
> Adam
>

> what kind 
> of glue can I use?  Will CA work?


I have used "Goop",  you can find it at Home Depot, Lowes, Wal Mart, 
etc.   They offer it in different packages for different uses and 
sometime at different prices for the different packages but I think 
it is all the same stuff. Has always worked good for me.

Ben

On Fri, 28 Nov 2003 22:50:53 -0000, Ben H. Lanmon <bhleavi@...> 
wrote:

>> what kind of glue can I use?  Will CA work?
>
>
> I have used "Goop",  you can find it at Home Depot, Lowes, Wal Mart, etc. 
> They offer it in different packages for different uses and sometime at 
> different prices for the different packages but I think it is all the 
> same stuff. Has always worked good for me.
>
> Ben
>

That goop must be really funny stuff...
You guys glue everything with it? I get crazy from reading about it all the 
time.
(You need to know i read a lot of rc model building pages and they use goop 
EVERYWHERE)

I can't figure out what it is. I have read about a hundred different 
"goops" or goop kinds.

Now the bad thing: my dictionary returns "narr" if i enter goop. this is 
the word for fool
if you translate it back.

Hmmm... i never saw "fool glue" anywhere here...

Does ANYONE know what goop is, a other word for it, or a description, or 
chemical ingredients?
Does it get hard when "hardened"? or elastic? which color is it? is it 
solvent based?

WHAT IS IT?


please.... tell me...


st

It is a Silicon Based Glue.

Go to www.eclecticproducts.com  you can read all about it from the 
manufacture of GOOP.

Ben

There are actually lots of types of Goop.  See:

http://eclecticproducts.com/goop/adhesives.asp

Bob

> On Fri, 28 Nov 2003 22:50:53 -0000, Ben H. Lanmon <bhleavi@...>
> wrote:
> 
> >> what kind of glue can I use?  Will CA work?
> >
> >
> > I have used "Goop",  you can find it at Home Depot, Lowes, Wal Mart,
> > etc. They offer it in different packages for different uses and
> > sometime at different prices for the different packages but I think
> > it is all the same stuff. Has always worked good for me.
> >
> > Ben
> >
> 
> That goop must be really funny stuff...
> You guys glue everything with it? I get crazy from reading about it
> all the time. (You need to know i read a lot of rc model building
> pages and they use goop EVERYWHERE)
> 
> I can't figure out what it is. I have read about a hundred different
> "goops" or goop kinds.
> 
> Now the bad thing: my dictionary returns "narr" if i enter goop. this
> is the word for fool if you translate it back.
> 
> Hmmm... i never saw "fool glue" anywhere here...
> 
> Does ANYONE know what goop is, a other word for it, or a description,
> or chemical ingredients? Does it get hard when "hardened"? or elastic?
> which color is it? is it solvent based?
> 
> WHAT IS IT?
> 
> 
> please.... tell me...
> 
> 
> st
> 
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> 
>

> That goop must be really funny stuff...
> You guys glue everything with it? I get crazy from reading about 
it all the 
> time.
 

Really Goop is not "Funny Stuff", it is a Serious Adhesive with a 
Funny Name.  Can Glue just about anything, just don't use it on 
something you eat or drink from.

Ben

On Fri, 28 Nov 2003 15:45:26 -0800, Bob & Linda Gardner 
<gardner.bob@...> wrote:

> There are actually lots of types of Goop.  See:
>
> http://eclecticproducts.com/goop/adhesives.asp
>
> Bob
>

i see... strange stuff..

thanks for the link..
I'm not sure to which glue sold here i should compare it to...
It says dries to rubber like consistency.. well silicone would be close to 
that.