Sumi von Dassow on fri 30 oct 09
Judy
Most if not all threaded lotion dispenser pumps come with a threaded
ring that glues on to the
un-threaded top of your dispenser. You just have to measure your
shrinkage to make sure the
top of your bottle form will fit inside this ring after firing.
If you really want to throw away this ring and thread the pump directly
onto your clay form, you
can make a tool to thread the top of a bottle form if you have the right
metal-working tools. You
need a pipe of the right diameter, and you need to thread the inside of
it, accounting for shrinkage.
That means if your clay shrinks 12.5% (1/8th) and the lotion pump is 7/8
of an inch in diameter with
16 threads per inch you get a pipe with a one-inch inside diameter and
have it threaded with 14 threads
per inch. Of course you only need a couple of threads. Then you spray it
with WD-40 inside and
carefully screw it onto and off of your freshly-thrown bottle top. I had
a student one time whose
husband had made her a lotion bottle threader this way, and it really
did work.
But it's much easier to glue on the ring.
Sumi
> How do you make the treads on a bottle that will fit a lotion or soap
> dispenser-pump after it is glaze fired? Is there some kind of template t=
hat
> you buy when you buy the lotion pump?
>
> Thanks,
> Judy Smith
> Nashville, TN
>
>
>
Michael Wendt on fri 30 oct 09
Judy,
I make threaded tops for soap pumps all the time.
Here's how:
I start by measuring the diameter of the thread on the
plastic soap pump neck. I have a digital micrometer for
this.
I multiply that measurement by my clay's scaling factor
1.143 to obtain the needed wet outside diameter of the
thread neck. Make the neck half agin taller than needed to
ease threading start point.
Take a pair of scissors and cut a thin strip of paper the
size that will just fit into the valley portion of the
plastic thread you are trying to match.
Once the soap pump body has firmed enough to hold in the
Giffen Grip, place it upright and wind the strip in the neck
in the correct direction to match the thread allowing the
needed space between winds to match the high part of the
thread and use a water based marker to color the part you
will cut away.
Make a tiny trim tool with the needed shape to trim the
groove and as the wheel turns slowly, follow the dark line,
gradually cutting the thread deeper with each pass.
After the piece is threaded, I trim the neck down to the
correct height and let dry, bisque glaze and fire to the
correct cone. I leave the threads unglazed. for easier
grinding if needed.
Now the fun part...
try the pump on the thread.
If it is too loose, make the next one slightly larger and
record the size shift.
If it fits just right, sue the recorded dimension you used.
If it is too tight, make the next one a little smaller. On
this one, use a Dremel with a diamond bit to make short work
of rough areas or hang points and get is to fit.
With a little practice, it becomes elegant and easy to make
good threads.
Regards,
Michael Wendt
Judy asked:
How do you make the treads on a bottle that will fit a
lotion or soap
dispenser-pump after it is glaze fired? Is there some kind
of template that
you buy when you buy the lotion pump?
Thanks,
Judy Smith
Nashville, TN
Judy Smith on fri 30 oct 09
How do you make the treads on a bottle that will fit a lotion or soap
dispenser-pump after it is glaze fired? Is there some kind of template tha=
t
you buy when you buy the lotion pump?
Thanks,
Judy Smith
Nashville, TN
Dennis Gerasimov on fri 30 oct 09
This is a tough one. I would not want to do it by any other means but
slip-casting. You will have to make a template (mould prototype
actually) yourself because it's size depend on the shrinkage of your
particular material.
I would start by trying to find a bottle with a similar thread, but 15%
or so bigger then the original (both thread step and diameter). I would
cut off that thread from the bottle and attach it to the top of my
prototype. Make a mould, test fire and see if it fits. 1-3% error should
not affect the usability.
If you are unable to locate such thread, try making a clay prototype.
Its a delicate work, and you might want to limit yourself to just two
short angled tabs on both sides for the thread to grab.
Dennis
Judy Smith wrote:
> How do you make the treads on a bottle that will fit a lotion or soap
> dispenser-pump after it is glaze fired? Is there some kind of template t=
hat
> you buy when you buy the lotion pump?
>
> Thanks,
> Judy Smith
> Nashville, TN
>
Sumi von Dassow on sat 31 oct 09
Lis
I personally never make lotion pumps, but if I did I'd use E6000 and
leave the collar unglazed. I'm not guaranteeing it would last very long,
not having tried it.
Or I'd use a silicone-based glue, there are some that are supposed to
work for aquariums.
Actually, I'd use the lotion pumps that come with a cork instead, anyway.
Sumi
> On Saturday 31 October 2009, Sumi von Dassow wrote:
>
>> But it's much easier to glue on the ring.
>>
>
> What glue did you use? I tried so many, and none held for very long.
>
> Lis
> --
> Elisabeth Allison
> Pine Ridge Studio
> www.Pine-Ridge-Studio.blogspot.com
>
>
>
Lis Allison on sat 31 oct 09
>
> Judy Smith wrote:
> > How do you make the treads on a bottle that will fit a lotion or soap
> > dispenser-pump after it is glaze fired? Is there some kind of
> > template that you buy when you buy the lotion pump?
At one time, Axner Pottery carried a set of plaster molds that you used as
press molds to make the threaded collars, which you then attached to the
pot. They work great, unfortunately they are fragile and I am down to 3
molds now.
There is also a tool for carving threads in a collar, I'll try to find out
its name and post it if no-one else does.
Lis
--
Elisabeth Allison
Pine Ridge Studio
www.Pine-Ridge-Studio.blogspot.com
Lis Allison on sat 31 oct 09
On Saturday 31 October 2009, Sumi von Dassow wrote:
>
> But it's much easier to glue on the ring.
What glue did you use? I tried so many, and none held for very long.
Lis
--
Elisabeth Allison
Pine Ridge Studio
www.Pine-Ridge-Studio.blogspot.com
Ann Testa on sat 31 oct 09
I, too, have some of those collars -- I wonder how hard it would be for
someone to make a mold?
Ann Testa
In a message dated 10/31/2009 3:01:48 P.M. Pacific Daylight Time,
lis@PINE-RIDGE.CA writes:
>
> Judy Smith wrote:
> > How do you make the treads on a bottle that will fit a lotion or soap
> > dispenser-pump after it is glaze fired? Is there some kind of
> > template that you buy when you buy the lotion pump?
At one time, Axner Pottery carried a set of plaster molds that you used as
press molds to make the threaded collars, which you then attached to the
pot. They work great, unfortunately they are fragile and I am down to 3
molds now.
There is also a tool for carving threads in a collar, I'll try to find out
its name and post it if no-one else does.
Lis
--
Elisabeth Allison
Pine Ridge Studio
www.Pine-Ridge-Studio.blogspot.com
Des & Jan Howard on sun 1 nov 09
Lis
We use a two part epoxy glue.
Porcelain Repair White Epoxy Adhesive.
A recess is made in the top of the pot
similar to the footring of this cup.
http://www.luepottery.hwy.com.au/clayartpics.htm
The recess is roughened & left unglazed.
The white epoxy gives an excellent bond
& matches the plastic collar.
Trimming can be done with a razor blade or scalpel.
Des
Lis Allison wrote:
> What glue did you use? I tried so many, and none held for very long.
--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850
02 6373 6419
www.luepottery.hwy.com.au
-32.656072 149.840624
Bruce Girrell on sun 1 nov 09
Ann Testa wrote:
I wonder how hard it would be for someone to make a mold?
Already done
Axner carrys the molds. Perhaps others do as well.
We have used the mold and it works well. You don't want to leave too much e=
=3D
xcess clay when making the screw tops. If you do, it can be difficult to re=
=3D
move the screw top from the mold without damage after the top has dried. Mi=
=3D
nor damage can usually be cleaned up pretty easily.
While we're on the subject of lotion pumps - The part that seems to get ins=
=3D
ufficient attention IMHO is the pump itself. One important factor of the pu=
=3D
mp is how much product is dispensed with each stroke of the pump. The ones =
=3D
we bought delivered only a tiny amount with each stroke (perhaps a ml) requ=
=3D
iring many strokes to get a suitable amount of product. For lotion, a perha=
=3D
ps a small amount may work, but for soap people expect considerably larger =
=3D
volume to be delivered in a single stroke and it is frustrating to have to =
=3D
pump repeatedly to get the amount you need.
Bruce Girrell=3D
The Hendriks on sun 1 nov 09
There is a potter in Ontario that sells aluminum collar molds a a couple of=
=3D
sizes. They look like a large ring with threads on the inside. To use them=
=3D
=3D2C throw the lotion bottle with a narrow=3D2C short neck. Lubricate the =
mold=3D
with WD40 and place on the bottle. Carefully expand the neck until it fill=
=3D
s the mold and trim any excess off the top. Leave the mold on until the pie=
=3D
ce is leather hard and carefully unscrew the mold. Don't glaze the threads =
=3D
and=3D2C wallah=3D2C if your clay has the right rate of shrinkage for the m=
old =3D
you can screw the lotion pump top directly onto the bottle.
I believe the potter's name is Micheal Collins of Salt something pottery bu=
=3D
t I'm not sure. If anyone is interested=3D2C contact me and I'll look it up=
f=3D
or certain.
***
Eleanor Hendriks
Elan Fine Pottery
http://eleanorhendriks.blogspot.com
www.StudioElan.etsy.com
----------------------------------------
> Date: Fri=3D2C 30 Oct 2009 14:09:42 -0500
> From: smith2001ja@GMAIL.COM
> Subject: soap dispenser
> To: Clayart@LSV.CERAMICS.ORG
>
> How do you make the treads on a bottle that will fit a lotion or soap
> dispenser-pump after it is glaze fired? Is there some kind of template th=
=3D
at
> you buy when you buy the lotion pump?
>
> Thanks=3D2C
> Judy Smith
> Nashville=3D2C TN
=3D20
_________________________________________________________________
Get Windows 7 for only $39.99=3D97CDN College & University students only. T=
hi=3D
s offer ends Jan 3=3D97upgrade now!
http://go.microsoft.com/?linkid=3D3D9691637=3D
Lis Allison on mon 2 nov 09
On Sunday 01 November 2009, The Hendriks wrote:
> There is a potter in Ontario that sells aluminum collar molds a a
> couple of sizes.
> >
> I believe the potter's name is Micheal Collins of Salt something
> pottery but I'm not sure. If anyone is interested, contact me and I'll
> look it up for certain.
Yes, that is who sold the aluminum collar molds. He was (is) in Nova
Scotia, I think, but I can no longer find any address for his
tools/accessories business. My guess is that it is no more....
I have both that tool and the Axner plaster collar molds. They work better
for me. I find the aluminum thingie both slow and fidgety. Wait too long
and it won't screw off, try too soon and it mushes the threads. Plus not
every clay shrinks the matching amount....and with only one aluminum thing
I could only make one bottle a day! With the plaster things you can fudge
a bit by using either very stiff clay or very soft clay, and so match the
collar to the pump size, and buying 6 of them is not very expensive. You
can use each one 3-4 times in one day, too.
Lis
--
Elisabeth Allison
Pine Ridge Studio
www.Pine-Ridge-Studio.blogspot.com
DJ Brewer on mon 15 feb 10
Why not use a cork stopper. Seems a LOT easier.
much love
DJ
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