I entered an earlier post on the subject of this glue applicator, but got no
replies, so
I will provide some more info. It is a air pressure powered glue gun that
applies PVA adhesive. It is especially nice for times when you have a lot
of gluing to do and want to have a neat way of applying it. It is also a
nice way of getting glue into an area that would be hard to apply with a
regular glue bottle.

I have attached a link to a photo to show what it looks like. The assembly
in the photo is a 4 inch sched. 40 PVC pipe with a cap at the bottom and a
screw cleanout at the top. I tapped the side of the top of the tube for the
output of the regulator. The best thing so far to seal the spout is a
special bottle, filled with water, made from a ball jar (see photo). It
keeps the tube clear of dried glue and you just have to flush out the water
by pulling the trigger and waiting for the water to drain (followed by the
glue). It takes anywhere from 20 to 40 lbs to force the glue out at a
decent pace.

I have an aluminum hanger to hold the gun while I am gluing and an aluminum
support for the ball jar all clamped with a hose clamp. Although you can't
see it, I have a rubber grommet in the top of the ball jar that sort of
seals the glue gun barrel when I am not using the gun. The tip of the gun
is held in the water in the ball jar. I am hanging the assembly with a
simple wire hanger that is attached (along with the regulator) by another
hose clamp. I was looking for a simpler way of sealing the tip of the gun
to keep the glue from drying, but so far caplugs and other approaches have
limited success.

Any other improvement ideas would be welcome.


Here is the photo

http://img.photobucket.com/albums/v3...pplicator2.jpg

"Eric Anderson" wrote in message
...

Snip


Any other improvement ideas would be welcome.

When I need to put down a lot of glue, say 48 square feet, I pour it and
spread it with a throw away paint roller.

Are you spraying for hours at a time?

This is a way to put down a very controlled bead of glue with no mess.
As far as using a roller to spread it out, here is another photo
showing a foam roller that clips onto the end of the spout to roll the
glue out.
http://img.photobucket.com/albums/v3...pplicator1.jpg

On Thu, 23 Dec 2004 00:35:00 GMT, "Leon"
wrote:

When I need to put down a lot of glue, say 48 square feet, I pour it and
spread it with a throw away paint roller.

Same here, or a paint brush for smaller "large" areas.

The gun is kind of cool, though.

GLUE FIGHT!!!!!

Barry

Is that a PVC pipe you are running your air through?
I have heard that using PVC with air is not a safe practice as it does not
really develop a leak rather it explodes in to shrapnel like pieces.


wrote in message
oups.com...
This is a way to put down a very controlled bead of glue with no mess.
As far as using a roller to spread it out, here is another photo
showing a foam roller that clips onto the end of the spout to roll the
glue out.
http://img.photobucket.com/albums/v3...pplicator1.jpg

On Wed, 22 Dec 2004 19:28:57 -0500, "Eric Anderson"
wrote:

I entered an earlier post on the subject of this glue applicator, but got no
replies, so
I will provide some more info. It is a air pressure powered glue gun that
applies PVA adhesive. It is especially nice for times when you have a lot
of gluing to do and want to have a neat way of applying it. It is also a
nice way of getting glue into an area that would be hard to apply with a
regular glue bottle.

I have attached a link to a photo to show what it looks like. The assembly
in the photo is a 4 inch sched. 40 PVC pipe with a cap at the bottom and a
screw cleanout at the top. I tapped the side of the top of the tube for the
output of the regulator. The best thing so far to seal the spout is a
special bottle, filled with water, made from a ball jar (see photo). It
keeps the tube clear of dried glue and you just have to flush out the water
by pulling the trigger and waiting for the water to drain (followed by the
glue). It takes anywhere from 20 to 40 lbs to force the glue out at a
decent pace.

I have an aluminum hanger to hold the gun while I am gluing and an aluminum
support for the ball jar all clamped with a hose clamp. Although you can't
see it, I have a rubber grommet in the top of the ball jar that sort of
seals the glue gun barrel when I am not using the gun. The tip of the gun
is held in the water in the ball jar. I am hanging the assembly with a
simple wire hanger that is attached (along with the regulator) by another
hose clamp. I was looking for a simpler way of sealing the tip of the gun
to keep the glue from drying, but so far caplugs and other approaches have
limited success.

Any other improvement ideas would be welcome.


Here is the photo

http://img.photobucket.com/albums/v3...pplicator2.jpg





the system of closure used on spray guns should work fine. modifying a
cheap detail gun for glue application sounds like some work, but
doable.

Mmmm. Modifying a small spray gun... Interesting.

As far as pressure on PVC. I hear you. The original design was
thought to only have to use 5 or 10 PSI. It looks like it typically
needs 20 to 40 PSI. I don't think that is a problem based on the fact
that PVC pipe is used on water pipes in some cases and they are in the
50 psi area (and I THINK the walls on those types of pipe are thinner).
I would like to know what sched. 40, 4 inch pipe is good for. I think
I will try to look it up. If anyone knows, please speak up.

Believe me, the concern has crossed my mind, but I think I am on solid
ground.

wrote in message
oups.com...

I would like to know what sched. 40, 4 inch pipe is good for. I think
I will try to look it up. If anyone knows, please speak up.

According to this chart, 4" sch 40 PVC has a working pressure rating of 220
psi.

http://www.howellpipe.com/howpplp.htm


Bob

wrote in message
oups.com...

As far as pressure on PVC. I hear you. The original design was
thought to only have to use 5 or 10 PSI. It looks like it typically
needs 20 to 40 PSI. I don't think that is a problem based on the fact
that PVC pipe is used on water pipes in some cases and they are in the
50 psi area (and I THINK the walls on those types of pipe are thinner).

Transport of a compressible gas (air) is far more hazardous than transport
of water, because the rapid expansion of the air at failure will indeed send
pieces flying. I did a quick search and found a clear warning from a
company that is in the business of selling services for PVC pipe. They do
not recommend its use for air.

http://www.harvel.com/pipeclearpvc-caution.asp

If it were me, I'd abandon the idea of PVC for use of any pressurized air
application.

Bob

"BillyBob" wrote in message
ink.net...

wrote in message
oups.com...

As far as pressure on PVC. I hear you. The original design was
thought to only have to use 5 or 10 PSI. It looks like it typically
needs 20 to 40 PSI. I don't think that is a problem based on the fact
that PVC pipe is used on water pipes in some cases and they are in the
50 psi area (and I THINK the walls on those types of pipe are thinner).

Transport of a compressible gas (air) is far more hazardous than transport
of water, because the rapid expansion of the air at failure will indeed
send
pieces flying. I did a quick search and found a clear warning from a
company that is in the business of selling services for PVC pipe. They do
not recommend its use for air.

http://www.harvel.com/pipeclearpvc-caution.asp

If it were me, I'd abandon the idea of PVC for use of any pressurized air
application.

Bob



I wouldn't necessarily go quite that far yet Bob. Typically that mean they
recommend against it for pressurized air lines from the compressor. In
other words - full working pressure lines that commonly reach above 150psi.
I'd look a little further before assuming that this application - Schedule
40 at 40 psi is included in what you read. I'm trying to think of some
application that uses Schedule 40 at these pressures on a regular basis, but
nothing is coming to mind.
--

-Mike-

In article , Eric Anderson wrote:

Any other improvement ideas would be welcome.
Here is the photo
http://img.photobucket.com/albums/v3...pplicator2.jpg

You could replace that PVC with galvanized steel, threaded caps on
both ends. That would eliminate the complaints about pressurized
PVC.

Where the heck is this? If you flip on both of those lights you're
going to get sunburned at least and maybe burst into flames! Or
go broke paying the electric bill...

wrote:

Mmmm. Modifying a small spray gun... Interesting.

As far as pressure on PVC. I hear you. The original design was
thought to only have to use 5 or 10 PSI. It looks like it typically
needs 20 to 40 PSI. I don't think that is a problem based on the fact
that PVC pipe is used on water pipes in some cases and they are in the
50 psi area (and I THINK the walls on those types of pipe are thinner).
I would like to know what sched. 40, 4 inch pipe is good for. I think
I will try to look it up. If anyone knows, please speak up.

Believe me, the concern has crossed my mind, but I think I am on solid
ground.

If you have a regulator and/or relief I'd not worry too much. Biggest
problem w/ PVC is if you hit it it can shatter more easily than metal.
I'm sure if you were on a jobsite it would not be approved, however.

And currently under development: the Delta 69-669 WoodDorkerStopBot with
switchable Neander/Normite capability, shipped with starter kit of 1000
Mission style plans. Simply plug in (220 or 110), program for the
appropriate woodworking project, go have a beer (wood not included).

--
www.e-woodshop.net
Last update: 11/06/04

And currently under development: the Delta 69-669 WoodDorkerStopBot with
switchable Neander/Normite capability, shipped with starter kit of 1000
Mission style plans. Simply plug in (220 or 110), program for the
appropriate woodworking project, go have a beer (wood not included).

--
www.e-woodshop.net
Last update: 11/06/04

Swingman wrote:

And currently under development: the Delta 69-669 WoodDorkerStopBot with
switchable Neander/Normite capability, shipped with starter kit of 1000
Mission style plans. Simply plug in (220 or 110), program for the
appropriate woodworking project, go have a beer (wood not included).


I have the Binford 2800 which does the same thing. The major difference
is that the Binford has a built in beer dispenser in case you want to
watch your project being built. Makes it easier to talk to the unwashed
about how you built it. If you can remember, that is.
mahalo,
jo4hn

"Mike Marlow" wrote in message
ink.net...

I wouldn't necessarily go quite that far yet Bob. Typically that mean
they
recommend against it for pressurized air lines from the compressor. In
other words - full working pressure lines that commonly reach above
150psi.
I'd look a little further before assuming that this application - Schedule
40 at 40 psi is included in what you read. I'm trying to think of some
application that uses Schedule 40 at these pressures on a regular basis,
but
nothing is coming to mind.

Its a judgement call, Mike and I agree its quite conservative. 40 psi is
the typical pressure for an old fashioned paint sprayer (not HVLP). One of
the factors would be how much volume is pressurized (= stored energy) at 40
PSI. He was talking about 4" pipe. That's uncomfortable to me. Another
factor is what type of joints are used. I'd be much more comfortable with
threaded joints as opposed to glued joints. I haven't seen the glue gun
contraption so I don't know how its put together. I think we've had enough
comment to allow OP to make his own judgement and I respect your opinion, as
well.

Bob

If it were me, I would reinforce the pipe with some gear clamps around the
pipe and spaced every inch or two. These would prevent the pipe expanding
when under pressure which could cause fractures to start.


"Mike Marlow" wrote in message
ink.net...

"BillyBob" wrote in message
ink.net...

wrote in message
oups.com...

As far as pressure on PVC. I hear you. The original design was
thought to only have to use 5 or 10 PSI. It looks like it typically
needs 20 to 40 PSI. I don't think that is a problem based on the fact
that PVC pipe is used on water pipes in some cases and they are in the
50 psi area (and I THINK the walls on those types of pipe are
thinner).

Transport of a compressible gas (air) is far more hazardous than
transport
of water, because the rapid expansion of the air at failure will indeed
send
pieces flying. I did a quick search and found a clear warning from a
company that is in the business of selling services for PVC pipe. They
do
not recommend its use for air.

http://www.harvel.com/pipeclearpvc-caution.asp

If it were me, I'd abandon the idea of PVC for use of any pressurized
air
application.

Bob



I wouldn't necessarily go quite that far yet Bob. Typically that mean
they
recommend against it for pressurized air lines from the compressor. In
other words - full working pressure lines that commonly reach above
150psi.
I'd look a little further before assuming that this application - Schedule
40 at 40 psi is included in what you read. I'm trying to think of some
application that uses Schedule 40 at these pressures on a regular basis,
but
nothing is coming to mind.
--

-Mike-