drop-boxes

Hi,

Just lost a long email :(  Power cut.

Several attempts to write this, - but - had a storm here, and a
lot of rain.  Today it is sunshine and nice.
( No,  there is no white Christmas here,  and that is not
unusual,  but people often think so )


Emc cookbook:
-----------

Well,  I think I have something I could write, - not much though.
But where do I send
this ?

Dan:   I like the "drop-box" - I applaud.  But is it possible to
have more of these:

"drop-emc", drop-cad", "drop-programs", "drop-metalwork",
"drop-general" ?

The last would be for discussions, etc.

"drop-emc" - would be to drop inputs to the emc - cookbook.  I
think I could write
something, but I guess it should be
in html.   Then I would suggest to use Fred's list as major
subtittle, and you add your own
subtitle. One seperate line for "status",  as I would find it very
nice that this "status"
could say something like "approved" - if we could get someone from
NIST to comment
on it.  The thing is that this way the reader would know if this
is "fact or fiction".   In the
meantime, others may have comments on a subject, - so this is just
my idea on how this
could work out.

"drop-cad" could be the "dumpster"  that Ian mentioned, while
"drop-programs" could be
various scripts, etc.

Jon has put a lot of nice stuff in the FAQ,  but some of it may
fit into the EMC cookbook,
and a lot could be used for a
"metalwork cookbook" with tips and tricks, etc.

Varkon:
------

I would like an experts opinion about this.  I have looked at IRIT
and other stuff, but I
think Varkon is like EMC.
What I mean, is that they first wrote the core and had this
working, and the GUI came
last.   My main concern is to have
a good "core" that we could build on.  I am not sure how Ian uses
CAD, but  say you want
to make a circle of 2.0 i diameter.
It is a lot faster and easier to input "2.0" than try to size with
the mouse.

TclVogel was just a suggestion to make something more out of what
is possible with just
Tcl, - but in any case. A GUI that works nice, or they way people
would like it, could be
transferred to tclVogel,  - but I guess to Varkon as well.  And
don't forget that Linux is
Unix. You can make a lot of nice scripts, aliases, and shortcuts,
several windows, etc.
Some of this is already in Varkon,  you just have to add the
bindings, windows, buttons as you
want to.


-----


Well, this was just a few thoughts, - and what worries me more
than anything else, is "time".
There is a lot we can do, but it takes time.  I still don't have a
machine set up with EMC, - I just
did never belive it would take so much time before I had something
running.  There is always something
else that has some higher priority.

//ARNE





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There are 15 messages in this issue.

Topics in today's digest:

      1. Re: Surface Mounting Components.
           From: Earl J Morris <ejmorris-at-home.com>
      2. Re: 
           From: Ray Henry <rehenry-at-up.net>
      3. Re: Surface Mounting Components.
           From: hansw <hansw-at-iname.com>
      4. Re: Surface Mounting Components.
           From: hansw <hansw-at-iname.com>
      5. Re: Surface Mounting Components.
           From: hansw <hansw-at-iname.com>
      6. Re: Grizzly Mini Mill
           From: MIADsgns-at-aol.com
      7. Re: Home Switches
           From: PTENGIN-at-aol.com
      8. Bidgeport Series 1 Retrofit
           From: "Mike keller" <legmaker-at-home.com>
      9. Re: Surface Mounting Components.
           From: SNTLewis-at-aol.com
     10. Re: Surface Mounting Components.
           From: Earl J Morris <ejmorris-at-home.com>
     11. Bridgeport Handle
           From: Larry Van Duyn <lvanduyn-at-zianet.com>
     12. Re: Surface Mounting Components.
           From: Earl J Morris <ejmorris-at-home.com>
     13. Re: Surface Mounting Components.
           From: hansw <hansw-at-iname.com>
     14. Re: Surface Mounting Components.
           From: Earl J Morris <ejmorris-at-home.com>
     15. Re: Bidgeport Series 1 Retrofit
           From: "Matt Shaver" <mshaver-at-erols.com>


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Message: 1
   Date: Sat, 25 Dec 1999 06:28:04 -0500
   From: Earl J Morris <ejmorris-at-home.com>
Subject: Re: Surface Mounting Components.


Greetings

  A great project! I am also interested in building a solder sucker.
I have an air compressor available and am thinking about building a
venturi tube converter for the vacuum source. Your use of an aquarium
air pump has me curious. I wonder how difficult it would be to convert
one to a vacuum pump by modifying the air intake?

  Thanks for the inspiration

	Earl

hansw wrote:
> 
> From: hansw <hansw-at-iname.com>
> 
> If anyone is interested in surface mounting components...
> 
> I needed a Hot Air Pencil to do some surface mount work, but did not
> like the price of commercial units ( I'm just cheap that way !)
> So I made one... It's described at my web site...


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Message: 2
   Date: Sat, 25 Dec 1999 10:22:08 -0600
   From: Ray Henry <rehenry-at-up.net>
Subject: Re: 


My old Hardinge lathes use a magnet embedded in the big sprocket in the
axis belt reduction.  They use a micro for rough home.  This switch slows
down the axis and then the control uses the prox to find the magnet.

Ray


From: Jon Elson <jmelson-at-artsci.wustl.edu>
>Subject: Re: Home Switches
>
>
>
>William Scalione wrote:
>
>> From: William Scalione <scalione-at-netarrant.net>
>>
>> Anyone know what the best type of switch to use for a home switch?
>> I am using mechanical "Cherry" microswitches but they don't always
>> actuate at the exact same position, which makes them kind of useless.
>>
>> Limit switches don't seem to matter, a couple thousaths either way, as
>> long as they work but my hone switches need to be right on
>>
>> Proximity sensors? Photoelectric sensors? Other? or just better
>> quality mechanical switches?
>
>The way the home switch works on encoder-equipped machines with
>servo control, is that the rotary encoders have an 'Index' channel,
>usually called the 'Z' channel (while the quadrature channels are A and B)
>which generates a short pulse once per revolution.  Linear encoders
>have similar functions.  The home switch and the encoder are aligned
>so that the home switch closes just before the encoder passes the Index
>location.  The Home switch uniquely identifies one pulse of the index
>signal as the true home, other index pulses at other locations are
>ignored.  This way, as long as the home switch can click in and out
>in, say, .1" movements, there will be perfect selection of the correct
>index pulse with a .2" lead screw.
>
>If you are using a stepper system, you could put an optical sensor and
>a disc with one very narrow slot on the leadscrew, and use that to refine
>the home switch signal.  That should get you to within a few thousandths.




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Message: 3
   Date: Sat, 25 Dec 1999 10:35:46 -0600
   From: hansw <hansw-at-iname.com>
Subject: Re: Surface Mounting Components.

Earl,
I think I would try to buy a solder sucker, at least the Iron, you will
need a good supply of "bit" and homemade ones would be eaten away much
to quickly.
Solder sucker systems and spare parts are cheaper, I think the fact that
it's a much more mass produced item helps keep the price down.
Hansw

Earl J Morris wrote:

> Greetings
>
>   A great project! I am also interested in building a solder sucker.
> I have an air compressor available and am thinking about building a
> venturi tube converter for the vacuum source. Your use of an aquarium
> air pump has me curious. I wonder how difficult it would be to convert
> one to a vacuum pump by modifying the air intake?
>
>   Thanks for the inspiration
>
>         Earl
>



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Message: 4
   Date: Sat, 25 Dec 1999 10:36:28 -0600
   From: hansw <hansw-at-iname.com>
Subject: Re: Surface Mounting Components.

Lucky you !

Bertho Boman wrote:

> Converting a soldering iron to a hot air pencil is a clever idea!
> Congratulations.
>
> I picked up a new one at a hamfest for $20.  It was labeled
> "defective".  They thought it was a solder sucker.....
> Bertho Boman
>
>
>



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Message: 5
   Date: Sat, 25 Dec 1999 10:38:02 -0600
   From: hansw <hansw-at-iname.com>
Subject: Re: Surface Mounting Components.

Thta's something I have not done before, I'll give a try sometime.
Thanks
Hans Wedemeyer

Ward Merkouris wrote:

> Hans,
> A hot air unit like this does work great, doesn't it?  You'll also
> find that you can weld plastics with a unit like this.  Just
> get some plastic rod (thin) and weld plastic the same way you'd weld
> steel with an oxyacetylene torch.  It's great for filling
> in rock gouges in the bottom of kayaks too.
>
> Ward M.
>
>



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Message: 6
   Date: Sat, 25 Dec 1999 15:52:37 EST
   From: MIADsgns-at-aol.com
Subject: Re: Grizzly Mini Mill

In a message dated 12/24/99 10:14:10 AM SA Eastern Standard Time, 
ginger-at-spectrumtelecorp.com writes:

<< looks like vaporware to me, so I guess my Christmas holiday won't be
 playing with my new mill, but I will continue to work on the controller
 package.
  >>
Whatsort of controller package is this? A kit? Are you working on it directly 
of something you bought? 

Thanks and Happy Holidays,

Mario


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Message: 7
   Date: Sat, 25 Dec 1999 17:09:03 EST
   From: PTENGIN-at-aol.com
Subject: Re: Home Switches

In a message dated 12/23/99 10:32:13 PM Hawaiian Standard Time, 
scalione-at-netarrant.net writes:

<< From: William Scalione <scalione-at-netarrant.net>
 
 Anyone know what the best type of switch to use for a home switch?
 I am using mechanical "Cherry" microswitches but they don't always
 actuate at the exact same position, which makes them kind of useless.

 But my home switches need to be right on
 
  Better quality mechanical switches?
 
 Thanks
 Bill >>

Bill, 
 Not the best perhaps but a usable switch for me has turned out to be 
Honeywell/ Microswitch industrial limit switches. WW Grainger has a few 
equivalent such as model # 2G436. These all have the same physical 
dimensions. Omron, Square D and others have a EQ part number. My Honeywell 
units test to about +-.0003 or .0004". I can easily get consistant actuation 
inside of .001 inch. This was much better than I had figured was possible. No 
wonder they cost so much!! Try to get a unit that has no linkage as this 
causes more lash. Also set up the mount so there is a bump stop to protect 
the switch in case of a wiring or programming error.  Get the ones with a 
rubber boot as metal fines will work into everything. 
Happy Holidays all!
Peter


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_______________________________________________________________________________

Message: 8
   Date: Sat, 25 Dec 1999 14:21:27 -0700
   From: "Mike keller" <legmaker-at-home.com>
Subject: Bidgeport Series 1 Retrofit

Has anyone ever converted or retrofitted a Bridgeport Series 1?  I just got
one and am looking for input..
Thanks in Advance



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_______________________________________________________________________________

Message: 9
   Date: Sat, 25 Dec 1999 21:22:38 EST
   From: SNTLewis-at-aol.com
Subject: Re: Surface Mounting Components.

In a message dated 12/25/99 6:26:50 AM Eastern Standard Time, 
ejmorris-at-home.com writes:

<< I wonder how difficult it would be to convert
 one to a vacuum pump by modifying the air intake? >>

The "light duty" vacuum pumps that are used to vacuum bag various things are 
not much more than aquarium pumps with a nipple screwed into the intake on 
the bottom.  The diapraghm pump will pull about 6 inch (or was it -6 psi) 
before it stops vacuuming.

Hope this helps...

In His Service+

Stan Lewis


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Message: 10
   Date: Sat, 25 Dec 1999 21:28:20 -0500
   From: Earl J Morris <ejmorris-at-home.com>
Subject: Re: Surface Mounting Components.


Greetings Hans

  I have been using various manual solder suckers for over thirty years
as a field service engineer. As they say, "It is in the technique". They
work fine, but I have a large quantity of circuit that I am boning for
parts. Operating the plunger stresses my body parts after a while. 

 The commercial units go for over $500.00, although the hollow tips are
reasonably priced. Using a small pump, storage tank, and a solenoid valve
should be able to replicate the commercial units.

	Earl

> 
> Earl,
> I think I would try to buy a solder sucker, at least the Iron, you will
> need a good supply of "bit" and homemade ones would be eaten away much
> to quickly.


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Message: 11
   Date: Sat, 25 Dec 1999 19:28:58 -0700
   From: Larry Van Duyn <lvanduyn-at-zianet.com>
Subject: Bridgeport Handle



Does anyone have a spare handle for the knee on a series 1 Bridgeport
mill ?????
  Thanks, Larry.....




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Message: 12
   Date: Sat, 25 Dec 1999 21:38:00 -0500
   From: Earl J Morris <ejmorris-at-home.com>
Subject: Re: Surface Mounting Components.


Greetings Stan

   Thanks for the info. I will check it out. I am thinking of using 4" plastic
sewer pipe with two end caps, for the storage tank. Since the solder sucker
intermittently, the pump does not have to be large

	Earl

> The "light duty" vacuum pumps that are used to vacuum bag various things are
> not much more than aquarium pumps with a nipple screwed into the intake on
> the bottom.  The diapraghm pump will pull about 6 inch (or was it -6 psi)
> before it stops vacuuming.


_______________________________________________________________________________
_______________________________________________________________________________

Message: 13
   Date: Sat, 25 Dec 1999 21:01:48 -0600
   From: hansw <hansw-at-iname.com>
Subject: Re: Surface Mounting Components.

Earl,
I appreciated the need for a motorized solder sucker many years ago. My
Hakko Ace model 481 is not over 23 years old, and was a present from
Hakko on a visit to Japan...
You can buy the Weller irons and simply add the pump yourself, that way
you can do it for much less than $500.....

The Hakko 481 uses a very large motor, whereas the Aquarium pump uses a
simple AC coil driven pump which relies on the 50 or 60Hz to move the
pump.

I would still go for the ready made iron and add a pump of some kind.
That way you will be able to obtain bits more easily.

regards
Hans Wedemeyer

Earl J Morris wrote:

> Greetings Hans
>
>   I have been using various manual solder suckers for over thirty
> years
> as a field service engineer. As they say, "It is in the technique".
> They
> work fine, but I have a large quantity of circuit that I am boning for
> parts. Operating the plunger stresses my body parts after a while.
>
>  The commercial units go for over $500.00, although the hollow tips
> are
> reasonably priced. Using a small pump, storage tank, and a solenoid
> valve
> should be able to replicate the commercial units.
>
>         Earl
>
> >
> > Earl,
> > I think I would try to buy a solder sucker, at least the Iron, you
> will
> > need a good supply of "bit" and homemade ones would be eaten away
> much
> > to quickly.
>
> ------------------------------------------------------------------------
> Welcome to CAD_CAM_EDM_DRO-at-ONELIST.com,an unmoderated list for the
> discussion of shop built systems in the above catagories.
> To Unsubscribe, read archives, change to or from digest.
> Go to: http://www.onelist.com/isregistered.cgi
> Log on, and you will go to Member Center, and you can make changes
> there.
> For the FAQ, go to http://www.ktmarketing.com/faq.html
> bill,
> List Manager
>
>    ----------------------------------------------------------------
>                                [Image]
>                               Click Here
>



_______________________________________________________________________________
_______________________________________________________________________________

Message: 14
   Date: Sat, 25 Dec 1999 23:10:10 -0500
   From: Earl J Morris <ejmorris-at-home.com>
Subject: Re: Surface Mounting Components.

Greetings Hans

> I would still go for the ready made iron and add a pump of some kind.
> That way you will be able to obtain bits more easily.

   Yes! I fully agree with you.

	Earl


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Message: 15
   Date: Sat, 25 Dec 1999 23:28:40 -0500
   From: "Matt Shaver" <mshaver-at-erols.com>
Subject: Re: Bidgeport Series 1 Retrofit

> From: "Mike keller" <legmaker-at-home.com>
> 
> Has anyone ever converted or retrofitted a Bridgeport Series 1?  I just got
> one and am looking for input..
> Thanks in Advance

Nope, I'm pretty sure this is uncharted territory. Bridgeport's CNC mills are
extremely complex pieces of equipment not suited for alteration or
experimentation.

Matt Shaver

http://users.erols.com/mshaver/bps1.htm
http://users.erols.com/mshaver/v2e3.htm


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