My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the vacuum
.. When he switched the planer on the vacuum came on also - when the planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I can't
figure out how to do it and don't know what the device was called, so that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch, which is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)
--
BillR

BillR wrote:
My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the vacuum
. When he switched the planer on the vacuum came on also - when the planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I can't
figure out how to do it and don't know what the device was called, so that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch, which is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)
--
BillR



Depending on the voltage and current draw you may be able to get away
with a Sears Craftsman Auto Switch. See:

http://www.sears.com/sr/javasr/produ...=00 924031000

--
Jack Novak
Buffalo, NY - USA

(Remove -SPAM- to send email)

BillR wrote:
My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the vacuum
. When he switched the planer on the vacuum came on also - when the planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I can't
figure out how to do it and don't know what the device was called, so that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch, which is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)

http://www.axminster.co.uk/product.a...21176&recno=31

This is clearly designed for the UK/Irish market, but I'm guessing it's
probably available in a form suitable for left-pondian electricity too
somewhere.

--
Alun Saunders

Bill as I see it you have three options other than buying a purpose
made item such as that already suggested from Axminster.

1] If you need the 10sec delay, which for Lathe Work in my opinion is
not neccessary, if you really need a delay why not just stand back and
admire your work for 10sec before hitting the switch, then you can get
a Timer such as an "Off Delay / Constant Supply" or a "True Off Delay"
but these are generally available with ACII Contact Ratings of only
3/4Amps so you will require a suitabley rated Contactor to actually
switch the Motor.

2] You can use the live feed from the NVR Switch on the Lathe to Power
the Dust Extractor? but only if the NVR Switch is rated to the Total
Amperage of both the Lathe + the Extractor.

3] Again by using the live feed from the NVR to control a Contactor,
rated to suit the Extractor, you can switch both units on and off from
the Lathe.

I have used this method and it works fine for me, the only addition is
I have an on/off switch in the live to the Contactor so I can overide
the auto on/off of the Extractor.

I have also done the same with my Bandsaw and its Extractor.

Richard
http://www.laymar-crafts.co.uk



BillR wrote:
My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the vacuum
. When he switched the planer on the vacuum came on also - when the planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I can't
figure out how to do it and don't know what the device was called, so that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch, which is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)
--
BillR

I know this isn't what you asked for, but I use one of those wireless
remotes for my dc. It's a three part system, the little remote unit
(tied to some of that orange high visibility tape so it is easy to
find), a receiver that plugs into a nearby wall socket, and a unit that
switches the collector on and off. This has the advantage that I can use
it at the lathe, bandsaw, buffer, or any other machine I add in the future.

--
Derek Andrews, woodturner

http://www.seafoamwoodturning.com/TheToolrest/ - a blog for woodturners

That's it. I'm in the UK.

I had my elbow on the Axminster catalogue when I typed the original post. So
near yet so far.

BillR

"Alun" wrote in message
...
BillR wrote:
My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the
vacuum
. When he switched the planer on the vacuum came on also - when the
planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I
can't
figure out how to do it and don't know what the device was called, so
that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch,
which is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)

http://www.axminster.co.uk/product.a...21176&recno=31

This is clearly designed for the UK/Irish market, but I'm guessing it's
probably available in a form suitable for left-pondian electricity too
somewhere.

--
Alun Saunders

See inserts below.

wrote in message
oups.com...
Bill as I see it you have three options other than buying a purpose
made item such as that already suggested from Axminster.

1] If you need the 10sec delay, which for Lathe Work in my opinion is
not neccessary, if you really need a delay why not just stand back and
admire your work for 10sec before hitting the switch, then you can get
a Timer such as an "Off Delay / Constant Supply" or a "True Off Delay"
but these are generally available with ACII Contact Ratings of only
3/4Amps so you will require a suitabley rated Contactor to actually
switch the Motor.


Not to fussed about having a delay. I figured that if I knew how the device
worked and had to build one I could build a RC circuit to hold the
contactor/relay in for some time after the power went off.

2] You can use the live feed from the NVR Switch on the Lathe to Power
the Dust Extractor? but only if the NVR Switch is rated to the Total
Amperage of both the Lathe + the Extractor.


I like your thinking.
Didn't want to do this as I would have to go inside the lathe and intercept
the feed to the motor.

The link on Alun's post indicates that the unit senses the magnetic field
when current flows in the circuit.
Something in the back of my memory says Hall Effect (college 40 years ago).
I will have to investigate, if only out of curiosity.

3] Again by using the live feed from the NVR to control a Contactor,
rated to suit the Extractor, you can switch both units on and off from
the Lathe.


See reply to 2]

I have used this method and it works fine for me, the only addition is
I have an on/off switch in the live to the Contactor so I can overide
the auto on/off of the Extractor.

I have also done the same with my Bandsaw and its Extractor.


Thanks for your reply.

Also your site is great. I would recommend any woodturner to take a look.
With 82 hints & tips (or was that last week) there has to be something there
for everyone.


Richard
http://www.laymar-crafts.co.uk



BillR wrote:
My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the
vacuum
. When he switched the planer on the vacuum came on also - when the
planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I
can't
figure out how to do it and don't know what the device was called, so
that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch,
which is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)
--
BillR

BillR wrote:
That's it. I'm in the UK.

I should have guessed from the (correct!) spelling of "neighbour"

As a general note, it's always a good idea to state where (i.e. what
country) you're located when asking questions like these, especially
when your email address, fake or otherwise, doesn't give any clues.

--
Alun Saunders

Greetings and Salutations....

On Mon, 26 Sep 2005 22:46:17 +0100, "BillR" wrote:

My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the vacuum
. When he switched the planer on the vacuum came on also - when the planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I can't
figure out how to do it and don't know what the device was called, so that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch, which is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)

Here in the USA, there is a readily available relay controller
that senses current and can do this with ease. It SHOULD be around
for y'all too, although I suspect it would be an item from a "real"
electrical supply house - not one that caters to the typical home
owner.
Fine Woodworking magazine (I think)-
http://www.taunton.com/finewoodworking/index.asp
had an article on wiring up this circuit within the
past couple of years. It is pretty simple to do, actually,
but, as with all things electrical requires a certain amount
of care and attention to detail. As I recall the sensor
is not all that expensive - $70 or so.
In short - you run the hot leg of the circuit for
your tool through a donut coil on the sensor block. You
attach a relay of appropriate capacity to the control
outlets of the sensor block. You then hook the dust
collector up to the power, through the relay.
When you turn on the tool, the sensor sees the
current flow, and automatically switches on the dust
collector. I believe that some models will also allow
you to specify a short delay for on/off, to ensure
that both the electrical load is lowered, and, the
last of the chips will get pulled away when the working
machine is turned off.
I have considered this for my shop, but,
at the moment it is sitting in the "projects it
would be NICE to do" bin. A lack of time and money
and the fact that I have wired the switch for the
dust collector in a very handy spot has made it less
urgent.
Actually, when woodworking in the shop,
I tend to simply turn the collector on and let it
run the entire time I am making dust. I find that
not only does it do a great job of picking up the
immediately created sawdust, but, it keeps the
air cleaner in the process - and that makes finishing
the project a happier and easier process.
Regards
Dave Mundt

Sears sells a switch for this purpose called an autoswitch.
http://www.sears.com/sr/javasr/produ...=00 924031000

It's only for 110V though and works well with my shop vac and saw. I have
not tried it on my HF DC yet as
I have not run the duct yet so do not know if the load will be too much for
both on the same circuit.
Chuck

"Dave Mundt" wrote in message
...
Greetings and Salutations....

On Mon, 26 Sep 2005 22:46:17 +0100, "BillR" wrote:

My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the
vacuum
. When he switched the planer on the vacuum came on also - when the planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I
can't
figure out how to do it and don't know what the device was called, so that
I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch, which
is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)

Here in the USA, there is a readily available relay controller
that senses current and can do this with ease. It SHOULD be around
for y'all too, although I suspect it would be an item from a "real"
electrical supply house - not one that caters to the typical home
owner.
Fine Woodworking magazine (I think)-
http://www.taunton.com/finewoodworking/index.asp
had an article on wiring up this circuit within the
past couple of years. It is pretty simple to do, actually,
but, as with all things electrical requires a certain amount
of care and attention to detail. As I recall the sensor
is not all that expensive - $70 or so.
In short - you run the hot leg of the circuit for
your tool through a donut coil on the sensor block. You
attach a relay of appropriate capacity to the control
outlets of the sensor block. You then hook the dust
collector up to the power, through the relay.
When you turn on the tool, the sensor sees the
current flow, and automatically switches on the dust
collector. I believe that some models will also allow
you to specify a short delay for on/off, to ensure
that both the electrical load is lowered, and, the
last of the chips will get pulled away when the working
machine is turned off.
I have considered this for my shop, but,
at the moment it is sitting in the "projects it
would be NICE to do" bin. A lack of time and money
and the fact that I have wired the switch for the
dust collector in a very handy spot has made it less
urgent.
Actually, when woodworking in the shop,
I tend to simply turn the collector on and let it
run the entire time I am making dust. I find that
not only does it do a great job of picking up the
immediately created sawdust, but, it keeps the
air cleaner in the process - and that makes finishing
the project a happier and easier process.
Regards
Dave Mundt

BillR wrote:
: My neighbour had a tradesman come round to fit some doors. He had a hand
: planer and a vacuum cleaner. The planer plugged into a socket on the vacuum
: . When he switched the planer on the vacuum came on also - when the planer
: was switched off the vacuum ran for 10 secs and switched itself off.

Probably the Fein model III.

: This sound like a good idea to adapt to my dust extractor and lathe. I can't
: figure out how to do it and don't know what the device was called, so that I
: can 'google' it.

: Does anyone have a circuit diagram or know how such a device works?



Woodwork magazine had an articleon setting up your own system --
this was about a year ago -- check their site at
http://www.woodwork-mag.com.

Just checked -- it's the Feb. 05 issue. There was also a followup in the
next issue on some parts numbers that weren't in the original.


You can also buy a system from
Oneida Air, I think it's called Eco-Gate.

-- Andy Barss

Thanksfor reply. See inserts below.

"Dave Mundt" wrote in message
...
Greetings and Salutations....

On Mon, 26 Sep 2005 22:46:17 +0100, "BillR" wrote:

My neighbour had a tradesman come round to fit some doors. He had a hand
planer and a vacuum cleaner. The planer plugged into a socket on the
vacuum
. When he switched the planer on the vacuum came on also - when the
planer
was switched off the vacuum ran for 10 secs and switched itself off.

This sound like a good idea to adapt to my dust extractor and lathe. I
can't
figure out how to do it and don't know what the device was called, so
that I
can 'google' it.

Does anyone have a circuit diagram or know how such a device works?

Before anyone suggests putting my vac and lathe on the same switch, which
is
the obvious solution, my lathe is blessed with a NVR switch (i.e. if the
volts to the lathe disappear - the switch goes to the OFF position.)

Here in the USA, there is a readily available relay controller
that senses current and can do this with ease. It SHOULD be around
for y'all too, although I suspect it would be an item from a "real"
electrical supply house - not one that caters to the typical home
owner.
Fine Woodworking magazine (I think)-
http://www.taunton.com/finewoodworking/index.asp
had an article on wiring up this circuit within the
past couple of years. It is pretty simple to do, actually,
but, as with all things electrical requires a certain amount
of care and attention to detail. As I recall the sensor
is not all that expensive - $70 or so.
In short - you run the hot leg of the circuit for
your tool through a donut coil on the sensor block. You
attach a relay of appropriate capacity to the control
outlets of the sensor block.

I tried multiple coils (20) of thin wire around the hot leg
of the circuit but couldn't detect any voltage. I figured that the field
generated by the hot wire was perpendicular to my coil wires and should have
been in parallel as they are in a transformer.

Your description has given me an idea. I think I can find a toroid on an old
circuit board and make a simple transformer which will give me better
coupling. If I can get any volts out I'm OK with the relay side of it.

Why would I bother doing this? It would be nice to have but not worth buying
at the prices they are charging in the UK. If I get it to work I will post a
solution.

It should be easier in the USA as I see from other posts that you have twice
the current flowing in your circuit (110V vs 230V).

You then hook the dust
collector up to the power, through the relay.
When you turn on the tool, the sensor sees the
current flow, and automatically switches on the dust
collector. I believe that some models will also allow
you to specify a short delay for on/off, to ensure
that both the electrical load is lowered, and, the
last of the chips will get pulled away when the working
machine is turned off.
I have considered this for my shop, but,
at the moment it is sitting in the "projects it
would be NICE to do" bin. A lack of time and money
and the fact that I have wired the switch for the
dust collector in a very handy spot has made it less
urgent.
Actually, when woodworking in the shop,
I tend to simply turn the collector on and let it
run the entire time I am making dust. I find that
not only does it do a great job of picking up the
immediately created sawdust, but, it keeps the
air cleaner in the process - and that makes finishing
the project a happier and easier process.
Regards
Dave Mundt