Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Default Vibratory tumblers

Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?

--
Michael Koblic,
Campbell River, BC

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Michael Koblic wrote:

Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?


No need to build one, Harbor Freight sells two sizes of perfectly
useable ones cheap.
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On Apr 29, 6:59*am, "Pete C." wrote:
Michael Koblic wrote:

Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?


No need to build one, Harbor Freight sells two sizes of perfectly
useable ones cheap.


And If chink tumblers don't float your boat, there are plenty of ones
for the reloading folks on the market reasonable. Before they became
really prevalent, I saw several do-it-yourself articles on how to make
one, one used a 5 gallon bucket suspended from a hanger rod and
powered by a motor with an eccentric weight bolted to the bottom. No
warranty, though.

Depending on what you're really doing with small parts, media may be
your problem. There's ceramic shapes, steel needles, wet and dry
compounds, walnut hulls, ground corn cob, plastic bits, plus additives
for all of the above. Whole businesses exist to supply that stuff.
Walnut hulls and ground corn cob can be found in small quantities for
the reloading market, the other stuff may only be available in bulk.

I just tumble brass myself.

Stan
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Michael Koblic wrote:
Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?


I've seen a plastic bucket siliconed to the cone of a larger woofer,
face up, and hooked to the shop 100-watt stereo. filled with walnut
hulls or similar, sometimes with liquid for a sort of (non-ultra)sonic
cleaner
Efficiency dependent on choice of music.
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Michael Koblic wrote:
Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?


I made one from a 20 lb propane tank & treadmill motor:
http://www.metalworking.com/dropbox/vibepolisher.jpg
(Your browser may resize the jpg to fit your screen. Clicking on it
should return it to full size.)

Works well, but is VERY loud.

Bob



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"Bob Engelhardt" wrote in message
...
Michael Koblic wrote:
Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?


I made one from a 20 lb propane tank & treadmill motor:
http://www.metalworking.com/dropbox/vibepolisher.jpg
(Your browser may resize the jpg to fit your screen. Clicking on it
should return it to full size.)

Works well, but is VERY loud.


Very nice! When I read your post and the words "propane tank" I expected to
see a rotary tumbler (there is one on the Youtube), but no, your is the true
bill! Looking at the work involved I suspect that forking out $150 or so for
a new does not look so bad. I was not clear about the concept: The motor
spins an arm which moves the bowl in a circular eccentric fashion? I somehow
expected the movement to be up and down. Presumably the adjustment would be
achieved by regulating the length of the arm and thus the amplitude of the
vibration. The frequency of the vibration is then given by the motor rpm (I
guess yours is adjustable being a treadmill motor). I see the recommended
frequency is no less than 1600 Hz so an ordinary induction motor would do.

I have done a ton of research on this but eventually one has to get one's
feet wet. I was reluctant to spend money only to find out that the whole
thing is completely useless for my purposes. I am actively looking for
someone who has one to tumble a couple of my parts and see if it does the
job.

There seems to be a whole spectrum of people who use tumblers: Those who
treat it as an art and science and who pay attention to the exact size,
shape and constitution of the ceramic/plastic/hardwood media, added
compounds etc., and those who spin coffee cans with cat litter :-)

BTW I like the coffee can on a woofer - nice video on Youtube :-)

--
Michael Koblic,
Campbell River, BC

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Default Vibratory tumblers

Buy a pro type shaker - not a shell cleaner or polisher - the gun
ones are to light weight and will come apart.

The pro ones have a thick plastic bowl and can handle a lot of material.

I have both - one for reloading - one for small metal stuff.

I bought mine - and the ceramic shapes from MSCdirect.com

Martin

wrote:
On Apr 29, 6:59 am, "Pete C." wrote:
Michael Koblic wrote:

Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?

No need to build one, Harbor Freight sells two sizes of perfectly
useable ones cheap.


And If chink tumblers don't float your boat, there are plenty of ones
for the reloading folks on the market reasonable. Before they became
really prevalent, I saw several do-it-yourself articles on how to make
one, one used a 5 gallon bucket suspended from a hanger rod and
powered by a motor with an eccentric weight bolted to the bottom. No
warranty, though.

Depending on what you're really doing with small parts, media may be
your problem. There's ceramic shapes, steel needles, wet and dry
compounds, walnut hulls, ground corn cob, plastic bits, plus additives
for all of the above. Whole businesses exist to supply that stuff.
Walnut hulls and ground corn cob can be found in small quantities for
the reloading market, the other stuff may only be available in bulk.

I just tumble brass myself.

Stan

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"Martin H. Eastburn" wrote in message
...
Buy a pro type shaker - not a shell cleaner or polisher - the gun
ones are to light weight and will come apart.

The pro ones have a thick plastic bowl and can handle a lot of material.

I have both - one for reloading - one for small metal stuff.

I bought mine - and the ceramic shapes from MSCdirect.com


I am beginning to find out all the little glitches. Even some of the so
called "industrial" units do not have bowls that will take ceramics or
steel.

I am still not entirely clear how the vibrations are generated in these
units. I managed to find an exploded drawing of one and it seems that it is
the motor body that is attached to the bowl rather than some sort of
cam-shaft arrangement shaking the bowl.

I am trying to visualize how to get a big plastic bowl to shake at 1700 Hz
with a motor cannibalized from a drill press :-)

--
Michael Koblic,
Campbell River, BC

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Default Vibratory tumblers

http://www1.mscdirect.com/Vibratory-...000000220.HTML

Martin

Michael Koblic wrote:

"Martin H. Eastburn" wrote in message
...
Buy a pro type shaker - not a shell cleaner or polisher - the gun
ones are to light weight and will come apart.

The pro ones have a thick plastic bowl and can handle a lot of material.

I have both - one for reloading - one for small metal stuff.

I bought mine - and the ceramic shapes from MSCdirect.com


I am beginning to find out all the little glitches. Even some of the so
called "industrial" units do not have bowls that will take ceramics or
steel.

I am still not entirely clear how the vibrations are generated in these
units. I managed to find an exploded drawing of one and it seems that it
is the motor body that is attached to the bowl rather than some sort of
cam-shaft arrangement shaking the bowl.

I am trying to visualize how to get a big plastic bowl to shake at 1700
Hz with a motor cannibalized from a drill press :-)

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Default Vibratory tumblers

On Fri, 30 Apr 2010 18:26:51 -0700, "Michael Koblic"
wrote:


"Martin H. Eastburn" wrote in message
...
Buy a pro type shaker - not a shell cleaner or polisher - the gun
ones are to light weight and will come apart.

The pro ones have a thick plastic bowl and can handle a lot of material.

I have both - one for reloading - one for small metal stuff.

I bought mine - and the ceramic shapes from MSCdirect.com


I am beginning to find out all the little glitches. Even some of the so
called "industrial" units do not have bowls that will take ceramics or
steel.

I am still not entirely clear how the vibrations are generated in these
units. I managed to find an exploded drawing of one and it seems that it is
the motor body that is attached to the bowl rather than some sort of
cam-shaft arrangement shaking the bowl.

I am trying to visualize how to get a big plastic bowl to shake at 1700 Hz
with a motor cannibalized from a drill press :-)



I have (5) 15 lb brass "vibrators for polishing brass cases, and a 50
lbs one that I use for brass, small parts etc etc

they all typically have a motor with a weight on the shaft that is
lopsided. The 50 lb one has a belt from a motor that spins a shaft
bolted to the bottom of the bowl, that has a big brass "half moon" on
the end of it. All of them have springs that carry the bowls.

The small units get walnut hulls with a touch of Brasso, the big one
uses either walnut hulls as above, or various ceramic shapes of various
sizes, depending on what Im cleaning up/deburring

Gunner


"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.

This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." Grey Ghost


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On Thu, 29 Apr 2010 10:45:28 -0500, RBnDFW wrote:

Michael Koblic wrote:
Has anyone ever made their own vibratory tumbler? Does anyone use one to
tumble small steel parts?


I've seen a plastic bucket siliconed to the cone of a larger woofer,
face up, and hooked to the shop 100-watt stereo. filled with walnut
hulls or similar, sometimes with liquid for a sort of (non-ultra)sonic
cleaner
Efficiency dependent on choice of music.



Ina God da da vida would be a great tune.....

G

Gunner


"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.

This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." Grey Ghost
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Michael Koblic wrote:

"Martin H. Eastburn" wrote in message
...
Buy a pro type shaker - not a shell cleaner or polisher - the gun
ones are to light weight and will come apart.

The pro ones have a thick plastic bowl and can handle a lot of material.

I have both - one for reloading - one for small metal stuff.

I bought mine - and the ceramic shapes from MSCdirect.com


I am beginning to find out all the little glitches. Even some of the
so called "industrial" units do not have bowls that will take ceramics
or steel.

I am still not entirely clear how the vibrations are generated in
these units. I managed to find an exploded drawing of one and it seems
that it is the motor body that is attached to the bowl rather than
some sort of cam-shaft arrangement shaking the bowl.

I am trying to visualize how to get a big plastic bowl to shake at
1700 Hz with a motor cannibalized from a drill press :-)

I made a vibratory table for helping place ceramic castables. Same sort
of idea I think as the vibratory tumbler, see
http://www.metal-arts.co.uk/vibrator...ble/index.html . In use when
small amounts of castable are present they often exhibit a tumbling
action, although it is effected by the offset mass placement and speed.
Since taking those pictures I have added a PWM speed controller so have
2 parameters to play with which effect the agitation of the material. I
suspect that for a tumbler the exhaust mounts could be replaced by
springs to reduce the vertical constraint or the exhaust mounts moved
inwards to allow greater pitching of the bowl for more tumbling action.
I have a small propane bottle here that might be worth cutting in half
and clamping on top to try as a tumbler.
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Michael Koblic wrote:

"Bob Engelhardt" wrote in message
I made one from a 20 lb propane tank & treadmill motor:
http://www.metalworking.com/dropbox/vibepolisher.jpg


... I was not clear about the
concept: The motor spins an arm which moves the bowl in a circular
eccentric fashion? I somehow expected the movement to be up and down.


Correct. Since the bowl is not actually rotating, the effect is a
back-and-forth motion. This back-and-forth against the curved sides
causes the "media" to have a rolling action: it actually flows up the
sides & middle and down in between. It was quite surprising the 1st
time that I saw it.

Presumably the adjustment would be achieved by regulating the length of
the arm and thus the amplitude of the vibration. The frequency of the
vibration is then given by the motor rpm (I guess yours is adjustable
being a treadmill motor). I see the recommended frequency is no less
than 1600 Hz so an ordinary induction motor would do.


Correct again. I read somewhere (Eastwood , I think), that their
vibrators ran at 3000 rpm, so that I what I used. The frequency makes a
huge difference. Not knowing what-the-hell was going to happen the
first time I ran mine, I started out very slowly & worked up. At some
point - the resonant frequency, I suppose - the action was VERY violent!
Increasing it further, it quieted down & at 3000, it was very smooth
(but NOISY).

I have done a ton of research on this but eventually one has to get
one's feet wet. I was reluctant to spend money only to find out that the
whole thing is completely useless for my purposes. I am actively looking
for someone who has one to tumble a couple of my parts and see if it
does the job.


Heh - I have used mine pretty much not-at-all. Another one of those
projects whose point was to build it, not have it G. It does polish
silverware nicely - corn cob media , with a touch of rouge.

Bob
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"Martin H. Eastburn" wrote in message
...
http://www1.mscdirect.com/Vibratory-...000000220.HTML


I am a bit concerned about Raytech. I e-mailed them about the TV5 and TV10
and got some contradictory info. I am looking at GoodVibes which seem to be
popular in Canada. I can get a decent sized one for $259 with free shipping.

Meanwhile I am shaking boxes of rice and cereal to the amusement of my wife.
The purpose is to study what is the most effective movement imparted to the
box to get the media tumbling. My theory is that there is more than one way
to skin that particular cat.

Then there is the whole thing of hunting down the media...

--
Michael Koblic,
Campbell River, BC

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"David Billington" wrote in message
...

I made a vibratory table for helping place ceramic castables. Same sort of
idea I think as the vibratory tumbler, see
http://www.metal-arts.co.uk/vibrator...ble/index.html . In use when
small amounts of castable are present they often exhibit a tumbling
action, although it is effected by the offset mass placement and speed.
Since taking those pictures I have added a PWM speed controller so have 2
parameters to play with which effect the agitation of the material. I
suspect that for a tumbler the exhaust mounts could be replaced by springs
to reduce the vertical constraint or the exhaust mounts moved inwards to
allow greater pitching of the bowl for more tumbling action. I have a
small propane bottle here that might be worth cutting in half and clamping
on top to try as a tumbler.


Thanks, that is helpful. I am contemplating something along those lines.

--
Michael Koblic,
Campbell River, BC





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"Bob Engelhardt" wrote in message
...
Michael Koblic wrote:

"Bob Engelhardt" wrote in message
I made one from a 20 lb propane tank & treadmill motor:
http://www.metalworking.com/dropbox/vibepolisher.jpg


... I was not clear about the concept: The motor spins an arm which moves
the bowl in a circular eccentric fashion? I somehow expected the movement
to be up and down.


Correct. Since the bowl is not actually rotating, the effect is a
back-and-forth motion. This back-and-forth against the curved sides
causes the "media" to have a rolling action: it actually flows up the
sides & middle and down in between. It was quite surprising the 1st time
that I saw it.

Presumably the adjustment would be achieved by regulating the length of
the arm and thus the amplitude of the vibration. The frequency of the
vibration is then given by the motor rpm (I guess yours is adjustable
being a treadmill motor). I see the recommended frequency is no less than
1600 Hz so an ordinary induction motor would do.


Correct again. I read somewhere (Eastwood , I think), that their
vibrators ran at 3000 rpm, so that I what I used. The frequency makes a
huge difference. Not knowing what-the-hell was going to happen the first
time I ran mine, I started out very slowly & worked up. At some point -
the resonant frequency, I suppose - the action was VERY violent!
Increasing it further, it quieted down & at 3000, it was very smooth (but
NOISY).

I have done a ton of research on this but eventually one has to get one's
feet wet. I was reluctant to spend money only to find out that the whole
thing is completely useless for my purposes. I am actively looking for
someone who has one to tumble a couple of my parts and see if it does the
job.


Heh - I have used mine pretty much not-at-all. Another one of those
projects whose point was to build it, not have it G. It does polish
silverware nicely - corn cob media , with a touch of rouge.


Only some companies give you full details of their units. Some would not
tell me their frequency even when I asked directly. GoodVibes run at 3000. I
am told the higher the better.

Then there is the other approach:

http://www.youtube.com/watch?v=PvGYf...eature=related
http://www.youtube.com/watch?v=xq1hX...eature=related
http://www.youtube.com/watch?v=ESl-_...eature=related

Of course rotary tumbling would be simpler...

--
Michael Koblic,
Campbell River, BC





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I'm running a double handful of 60 parts through my Raytech with Rombic
ceramic as I type. I'll go out and check them tomorrow.

The bowl is thick and has liquid capability.

What questions do you have and what size of material is it that you want to
do ? As I recall I have the TV5 -

The material in my bowls roll. I turn it on and it is mixing the ceramic.
I add a layer of work to the top and it is turned in and mixed in a random
motion. Movie is possible.

Martin

Michael Koblic wrote:

"Martin H. Eastburn" wrote in message
...
http://www1.mscdirect.com/Vibratory-...000000220.HTML



I am a bit concerned about Raytech. I e-mailed them about the TV5 and
TV10 and got some contradictory info. I am looking at GoodVibes which
seem to be popular in Canada. I can get a decent sized one for $259 with
free shipping.

Meanwhile I am shaking boxes of rice and cereal to the amusement of my
wife. The purpose is to study what is the most effective movement
imparted to the box to get the media tumbling. My theory is that there
is more than one way to skin that particular cat.

Then there is the whole thing of hunting down the media...

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"Martin H. Eastburn" wrote in message
...
Buy a pro type shaker - not a shell cleaner or polisher - the gun
ones are to light weight and will come apart.

The pro ones have a thick plastic bowl and can handle a lot of material.

I have both - one for reloading - one for small metal stuff.

I bought mine - and the ceramic shapes from MSCdirect.com


I am beginning to find out all the little glitches. Even some of the so
called "industrial" units do not have bowls that will take ceramics or
steel.

I am still not entirely clear how the vibrations are generated in these
units. I managed to find an exploded drawing of one and it seems that it
is the motor body that is attached to the bowl rather than some sort of
cam-shaft arrangement shaking the bowl.

I am trying to visualize how to get a big plastic bowl to shake at 1700
Hz with a motor cannibalized from a drill press :-)


That'll require some gears. 1700 Hz is 102,000 RPM.
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In article ,
"Michael Koblic" wrote:
Of course rotary tumbling would be simpler...


And quieter, most likely. The rock shop near where I grew up had an
elaborate tumbling setup consisting of one long driven roller, one idle
roller, and a bunch of car tires (hold up to harsh media, contain
water/fluids, deaden sound.)

--
Cats, coffee, chocolate...vices to live by
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"Ecnerwal" wrote in message
...
In article ,
"Michael Koblic" wrote:
Of course rotary tumbling would be simpler...


And quieter, most likely. The rock shop near where I grew up had an
elaborate tumbling setup consisting of one long driven roller, one idle
roller, and a bunch of car tires (hold up to harsh media, contain
water/fluids, deaden sound.)


I am told that in principle vibrating is quieter than rotary tumbling. But I
suspect that it depends a lot on the actual equipment, liners etc.




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"Martin H. Eastburn" wrote in message
news
I'm running a double handful of 60 parts through my Raytech with Rombic
ceramic as I type. I'll go out and check them tomorrow.

The bowl is thick and has liquid capability.

What questions do you have and what size of material is it that you want
to
do ? As I recall I have the TV5 -

The material in my bowls roll. I turn it on and it is mixing the
ceramic.
I add a layer of work to the top and it is turned in and mixed in a random
motion. Movie is possible.


I wanted to know:

1) The size of the bowl opening (i.e. not the biggest bowl diameter)
2) The actual vibration frequency
3) The suitability of the bowl or otherwise for use with steel and ceramic
media..

I was told that I definitely want the TV10 because it has a more solid bowl.
Yet in their manual using ceramics in either TV5 or TV10 voids the warranty.
No reply to No. 1 or No. 2.

I am reasonably happy with the principles of action, I just want to have the
full picture if I am going to spend $300 or so on something which may turn
out to be a complete waste of time and money.

OTOH I can get the TV5 off e-bay for about $120 including shipping so if you
say it works for you with ceramics, I would be happy to take the plunge. It
looks like the biggest part of the TV5 bowl is the opening to start with.

--
Michael Koblic,
Campbell River, BC

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"Don Foreman" wrote in message
...

[...]

I am trying to visualize how to get a big plastic bowl to shake at 1700
Hz with a motor cannibalized from a drill press :-)


That'll require some gears. 1700 Hz is 102,000 RPM.


Please explain.

The standard frequency of these vibrating tumblers is either 1700 or 3000
vibrations per second (Hz). Are you saying their motors run that fast? I
thought the unit shakes once for each revolution of the eccentrically loaded
shaft.

--
Michael Koblic,
Campbell River, BC



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In article ,
"Michael Koblic" wrote:

"Don Foreman" wrote in message
...

[...]

I am trying to visualize how to get a big plastic bowl to shake at 1700
Hz with a motor cannibalized from a drill press :-)


That'll require some gears. 1700 Hz is 102,000 RPM.


Please explain.

The standard frequency of these vibrating tumblers is either 1700 or 3000
vibrations per second (Hz). Are you saying their motors run that fast? I
thought the unit shakes once for each revolution of the eccentrically loaded
shaft.


....you are not paying attention to details. A normal 60 hz induction
motor is going to be running either 3600 or 1800 (not quite due to
slippage) RPM. That would be 60 or 30 hz. If you want 1700hz, you need
102,000 rpm - a factor of 60. That would be the difference between
measuring per second (Hz) and per minute (RPM.) We collectively suspect
that you mean vibrations per minute, not Hz.

--
Cats, coffee, chocolate...vices to live by
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That is odd indeed. I think now I have the 10 and got the 25 consumables.

I put in small quarter and 50 cent and dime size steel that have melted steel
on the edges - from plasma cutting - and have ceramic rhombic shaped ceramic
that THEY sell as a part number. They also sell round/octal chunks that are
different in actions. I'll try them next. I've almost rounded these and they
are still working. It works wet or dry - and has a drain an drip in port.

There isn't a frequency spec. It is multi-modal in action.

It isn't a vibration tank - I have one as well. Those are frequency defined.

It sounds like you want a cleaning tank not a vibration polisher.

The tank is plastic - thick rubber type. It goes up/down and side to side.
Internally it rolls the material in a form like a donut - the center is
a 'post' cone like - that bolts on the lid.

A part has to be sized to the opening on one side and small enough to drive
up/down. in the cycle.

What are you trying to to - and what is the size ?
I'd have to take a measure to mine.

Martin

Martin H. Eastburn wrote:
I'm running a double handful of 60 parts through my Raytech with Rombic
ceramic as I type. I'll go out and check them tomorrow.

The bowl is thick and has liquid capability.

What questions do you have and what size of material is it that you want to
do ? As I recall I have the TV5 -

The material in my bowls roll. I turn it on and it is mixing the ceramic.
I add a layer of work to the top and it is turned in and mixed in a
random motion. Movie is possible.

Martin

Michael Koblic wrote:

"Martin H. Eastburn" wrote in message
...
http://www1.mscdirect.com/Vibratory-...000000220.HTML



I am a bit concerned about Raytech. I e-mailed them about the TV5 and
TV10 and got some contradictory info. I am looking at GoodVibes which
seem to be popular in Canada. I can get a decent sized one for $259
with free shipping.

Meanwhile I am shaking boxes of rice and cereal to the amusement of my
wife. The purpose is to study what is the most effective movement
imparted to the box to get the media tumbling. My theory is that there
is more than one way to skin that particular cat.

Then there is the whole thing of hunting down the media...

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Materials and motors and frames and mass. So many factors.

Rrock liners are typically rubber and in a hex shaped rolling box.
But rocks are turned in everything from thimbles to cement trucks!
Martin

Michael Koblic wrote:

"Ecnerwal" wrote in
message
...
In article ,
"Michael Koblic" wrote:
Of course rotary tumbling would be simpler...


And quieter, most likely. The rock shop near where I grew up had an
elaborate tumbling setup consisting of one long driven roller, one idle
roller, and a bunch of car tires (hold up to harsh media, contain
water/fluids, deaden sound.)


I am told that in principle vibrating is quieter than rotary tumbling.
But I suspect that it depends a lot on the actual equipment, liners etc.




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On Sun, 02 May 2010 19:56:39 -0400, Ecnerwal
wrote:

In article ,
"Michael Koblic" wrote:

"Don Foreman" wrote in message
...

[...]

I am trying to visualize how to get a big plastic bowl to shake at 1700
Hz with a motor cannibalized from a drill press :-)

That'll require some gears. 1700 Hz is 102,000 RPM.


Please explain.

The standard frequency of these vibrating tumblers is either 1700 or 3000
vibrations per second (Hz).


No, it isn't. It might be about 1725 or 3450 orbits per minute, not
second.

1700 Hz is not quite a half-note below the A two octaves above middle
A on the piano, about 200 Hz below the most irritating component of a
baby's cry. If a vibrating tumbler ran at 1700 Hz you couldn't stay
in the same room with it.

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"Ecnerwal" wrote in message
news:MyNameForward-

...you are not paying attention to details. A normal 60 hz induction
motor is going to be running either 3600 or 1800 (not quite due to
slippage) RPM. That would be 60 or 30 hz. If you want 1700hz, you need
102,000 rpm - a factor of 60. That would be the difference between
measuring per second (Hz) and per minute (RPM.) We collectively suspect
that you mean vibrations per minute, not Hz.


Simple explanations are always the best!
I claim old age and stupidity as excuse.

--
Michael Koblic,
Campbell River, BC


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"Martin H. Eastburn" wrote in message
...
That is odd indeed. I think now I have the 10 and got the 25 consumables.

I put in small quarter and 50 cent and dime size steel that have melted
steel
on the edges - from plasma cutting - and have ceramic rhombic shaped
ceramic
that THEY sell as a part number. They also sell round/octal chunks that
are
different in actions. I'll try them next. I've almost rounded these and
they
are still working. It works wet or dry - and has a drain an drip in port.

There isn't a frequency spec. It is multi-modal in action.

It isn't a vibration tank - I have one as well. Those are frequency
defined.

It sounds like you want a cleaning tank not a vibration polisher.

The tank is plastic - thick rubber type. It goes up/down and side to
side.
Internally it rolls the material in a form like a donut - the center is
a 'post' cone like - that bolts on the lid.

A part has to be sized to the opening on one side and small enough to
drive up/down. in the cycle.

What are you trying to to - and what is the size ?
I'd have to take a measure to mine.


The short answer is "I haven't a clue". the long one is "I want that thingy
wot did such a wonderful job on the titanium hip joints on TV".
Seriously, forget my idiocy about the vibration frequency - Hz being events
per second rather than per minute. Lord knows I should know!
I am pretty sure the vibrating tumbler is the way to go. As to the size of
things - well, there is a wide selection. I was even wondering if you could
put rings around the central column (one at a time) and see if the movement
of the media over and around them would suffice in absence of free movement
of the part itself. So far I have not found anyone who has tried it.

I was also wondering how essential is the doughnut shape of the bowl to the
proper action of the unit. I suspect not as I have seen other (generally
bigger) vibrating tumblers which have different shapes (see Dave
Billington's post - I think). As none of this is life-saving I can play with
the concepts for a while.

--
Michael Koblic,
Campbell River, BC

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You will have to make clearer on the test you want on the central
cone and why.

The movement is based upon the bowl shape and the central cone
as you have a rotation of material on radials and therefore it
moves up the cone and over the top and down the bowl side under and
back around. There are horizontal forces that turn this into a
cork skew thereby tumbling small objects along the way.

Martin

Michael Koblic wrote:

"Martin H. Eastburn" wrote in message
...
That is odd indeed. I think now I have the 10 and got the 25
consumables.

I put in small quarter and 50 cent and dime size steel that have
melted steel
on the edges - from plasma cutting - and have ceramic rhombic shaped
ceramic
that THEY sell as a part number. They also sell round/octal chunks
that are
different in actions. I'll try them next. I've almost rounded these
and they
are still working. It works wet or dry - and has a drain an drip in
port.

There isn't a frequency spec. It is multi-modal in action.

It isn't a vibration tank - I have one as well. Those are frequency
defined.

It sounds like you want a cleaning tank not a vibration polisher.

The tank is plastic - thick rubber type. It goes up/down and side to
side.
Internally it rolls the material in a form like a donut - the center is
a 'post' cone like - that bolts on the lid.

A part has to be sized to the opening on one side and small enough to
drive up/down. in the cycle.

What are you trying to to - and what is the size ?
I'd have to take a measure to mine.


The short answer is "I haven't a clue". the long one is "I want that
thingy wot did such a wonderful job on the titanium hip joints on TV".
Seriously, forget my idiocy about the vibration frequency - Hz being
events per second rather than per minute. Lord knows I should know!
I am pretty sure the vibrating tumbler is the way to go. As to the size
of things - well, there is a wide selection. I was even wondering if you
could put rings around the central column (one at a time) and see if the
movement of the media over and around them would suffice in absence of
free movement of the part itself. So far I have not found anyone who has
tried it.

I was also wondering how essential is the doughnut shape of the bowl to
the proper action of the unit. I suspect not as I have seen other
(generally bigger) vibrating tumblers which have different shapes (see
Dave Billington's post - I think). As none of this is life-saving I can
play with the concepts for a while.

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