Re: [Emc-users] CNC terminology

[R C]

actually,  I have been told there are combinations of parts produced  
those ways too.



It definitely is interesting.



On 3/28/20 9:21 PM, Chris Albertson wrote:

I don't think so. Form Labs, one of the big makers of resin printers call
their products "3D Printers".  The term 3D Print means more than just
FDM printing.

This is now widely used to make "real" parts  The fuel injectors in the
SpaceX rockets are printed.   "Printed" is the most common term and is used
for every process.

Even the low-cost, under $200 FDM printer can make usable parts.   I've
mead motor mounts for my CNC mill using PLA plastic on a $170 printer.  I
thought that later I'd remake then in metal but the plastic rigid enough
that I can't measure any deflection under load.  That said the plastic
does have a press-fit bronze bushing and a press fit thrust bearing.

One of the neat things is that we can use the same CAD files for both CNC
and 3D Printing.   So the part can be designed once and then made on
plastic to check fit and then if it work, cut metal.   There is a
convergence so it makes sense to  call one additive and the other
subtractive so we can think of it as just two ways to get the same end.



On Thu, Mar 26, 2020 at 2:01 PM R C  wrote:


I figured something like that...


On 3/26/20 1:34 PM, Bari wrote:


The term 3D printing also used to be a blanket term until it was
hijacked by the media and marketers to only mean CNC glue gun types of
3D printers aka FDM/FFF.



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Re: [Emc-users] CNC terminology

[Chris Albertson]

I don't think so. Form Labs, one of the big makers of resin printers call
their products "3D Printers".  The term 3D Print means more than just
FDM printing.

This is now widely used to make "real" parts  The fuel injectors in the
SpaceX rockets are printed.   "Printed" is the most common term and is used
for every process.

Even the low-cost, under $200 FDM printer can make usable parts.   I've
mead motor mounts for my CNC mill using PLA plastic on a $170 printer.  I
thought that later I'd remake then in metal but the plastic rigid enough
that I can't measure any deflection under load.  That said the plastic
does have a press-fit bronze bushing and a press fit thrust bearing.

One of the neat things is that we can use the same CAD files for both CNC
and 3D Printing.   So the part can be designed once and then made on
plastic to check fit and then if it work, cut metal.   There is a
convergence so it makes sense to  call one additive and the other
subtractive so we can think of it as just two ways to get the same end.



On Thu, Mar 26, 2020 at 2:01 PM R C  wrote:

> I figured something like that...
>
>
> On 3/26/20 1:34 PM, Bari wrote:
>
> > The term 3D printing also used to be a blanket term until it was
> > hijacked by the media and marketers to only mean CNC glue gun types of
> > 3D printers aka FDM/FFF.
>
-- 

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Redondo Beach, California

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Re: [Emc-users] CNC terminology

[Phill Carter]

> On 27 Mar 2020, at 2:16 am, R C  wrote:
> 
> Hello group/list,
> 
> 
> So I am at home most of the time, working from home, like most of us 
> probably, but since I can't really do my job from home
> 
> I have been directed to look into things like "Additive Manufacturing", 
> g-codes etc etc...
> 
> 
> I was just thinking (ok ok ..  I am bored...)  But if terminology is buffed 
> up and 3D printing is called "Additive Manufacturing" just
> 
> to make it sound better,  maybe we should start calling CNC machining 
> "Subtractive Manufacturing", or has that already happened?
> 

LOL

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Re: [Emc-users] CNC terminology

[R C]

I figured something like that...


On 3/26/20 1:34 PM, Bari wrote:

Additive manufacturing is a blanket term as was 3D printing.

The term 3D printing also used to be a blanket term until it was 
hijacked by the media and marketers to only mean CNC glue gun types of 
3D printers aka FDM/FFF.


On 3/26/20 10:17 AM, R C wrote:

3D printing is called "Additive Manufacturing" just

to make it sound better



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Re: [Emc-users] CNC terminology

[Bari]

Additive manufacturing is a blanket term as was 3D printing.

The term 3D printing also used to be a blanket term until it was 
hijacked by the media and marketers to only mean CNC glue gun types of 
3D printers aka FDM/FFF.


On 3/26/20 10:17 AM, R C wrote:

3D printing is called "Additive Manufacturing" just

to make it sound better



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Re: [Emc-users] CNC terminology

[R C]

On 3/26/20 12:45 PM, Gene Heskett wrote:

On Thursday 26 March 2020 13:14:45 Stuart Stevenson wrote:


For years when someone has asked "What do you make?" my answer has
been "chips". You just get the raw material and make chips out of
everything that is not part.

Simple concept.

Rather like the sculptor standing next to 30ton block of granite saying
he's removing anything that doesn't look like an elephant.



sounds like it.



On Thu, Mar 26, 2020, 11:35 AM Chris Albertson


wrote:1

On Thu, Mar 26, 2020 at 8:19 AM R C  wrote:

Hello group/list,


So I am at home most of the time, working from home, like most of
us probably, but since I can't really do my job from home

I have been directed to look into things like "Additive
Manufacturing", g-codes etc etc...


I was just thinking (ok ok ..  I am bored...)  But if terminology
is buffed up and 3D printing is called "Additive Manufacturing"
just

to make it sound better,  maybe we should start calling CNC
machining "Subtractive Manufacturing", or has that already
happened?

Yes, that has already happend, years ago. What I would do to
look into 3D printing is buy one of the less then $200 printers and
make parts.  A great project is maybe a robot or a small CNC machine
tool made from plastic parts.  You learn best when you have a
project that pushes your skills just a little.

You can also combine additive and subtrctive methods.  for example
print, a part then treat it as casting and clean it up on a mill or
lathe.   Either you need an expensive printer that can print metal
or you print a mold in plastic then sand cast it, then machine it.
There is quite a lot to exlore at the ntersection of adding and
subtracting.Another is printing fixtures for machining.  Plastic
works well for holding and clamping odd-shape metal parts


Ron



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Redondo Beach, California

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Cheers, Gene Heskett



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Re: [Emc-users] CNC terminology

[R C]

that's what a famous ancient sculptur used to say.   The scupture is 
already in there, I just remove the pieces that are not sculpture.



On 3/26/20 11:14 AM, Stuart Stevenson wrote:

For years when someone has asked "What do you make?" my answer has been
"chips". You just get the raw material and make chips out of everything
that is not part.

On Thu, Mar 26, 2020, 11:35 AM Chris Albertson 
wrote:


On Thu, Mar 26, 2020 at 8:19 AM R C  wrote:


Hello group/list,


So I am at home most of the time, working from home, like most of us
probably, but since I can't really do my job from home

I have been directed to look into things like "Additive Manufacturing",
g-codes etc etc...


I was just thinking (ok ok ..  I am bored...)  But if terminology is
buffed up and 3D printing is called "Additive Manufacturing" just

to make it sound better,  maybe we should start calling CNC machining
"Subtractive Manufacturing", or has that already happened?


Yes, that has already happend, years ago. What I would do to look into
3D printing is buy one of the less then $200 printers and make parts.  A
great project is maybe a robot or a small CNC machine tool made from
plastic parts.  You learn best when you have a project that pushes your
skills just a little.

You can also combine additive and subtrctive methods.  for example print, a
part then treat it as casting and clean it up on a mill or lathe.   Either
you need an expensive printer that can print metal or you print a mold in
plastic then sand cast it, then machine it.   There is quite a lot to
exlore at the ntersection of adding and subtracting.Another is printing
fixtures for machining.  Plastic works well for holding and clamping
odd-shape metal parts




Ron



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Re: [Emc-users] CNC terminology

[R C]

On 3/26/20 10:33 AM, Chris Albertson wrote:

On Thu, Mar 26, 2020 at 8:19 AM R C  wrote:


Hello group/list,


So I am at home most of the time, working from home, like most of us
probably, but since I can't really do my job from home

I have been directed to look into things like "Additive Manufacturing",
g-codes etc etc...


I was just thinking (ok ok ..  I am bored...)  But if terminology is
buffed up and 3D printing is called "Additive Manufacturing" just

to make it sound better,  maybe we should start calling CNC machining
"Subtractive Manufacturing", or has that already happened?


Yes, that has already happend, years ago. What I would do to look into
3D printing is buy one of the less then $200 printers and make parts.  A
great project is maybe a robot or a small CNC machine tool made from
plastic parts.  You learn best when you have a project that pushes your
skills just a little.

You can also combine additive and subtrctive methods.  for example print, a
part then treat it as casting and clean it up on a mill or lathe.   Either
you need an expensive printer that can print metal or you print a mold in
plastic then sand cast it, then machine it.   There is quite a lot to
exlore at the ntersection of adding and subtracting.Another is printing
fixtures for machining.  Plastic works well for holding and clamping
odd-shape metal parts


actually I have been thinking about buying a 3D pinter.  However I 
wanted to finish (and start working with) a sherline mill and lathe that 
were given


to me years ago (they came in a Paxton-Patterson enclosure).

I have done some robotics, did teach an extra curricular class on it, 
but that was more about sensors measuring things etc.



I like playing with that stuff, and I am tying to figure out how to do 
some things, some of you have been very helpful  in particular one guy 
(his name is Phill from here)


I have some colleagues doing that, but before embarking on 3D printing, 
I just want a "pile" of projects of my workbench








Ron



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Re: [Emc-users] CNC terminology

[Gene Heskett]

On Thursday 26 March 2020 13:14:45 Stuart Stevenson wrote:

> For years when someone has asked "What do you make?" my answer has
> been "chips". You just get the raw material and make chips out of
> everything that is not part.

Simple concept.

Rather like the sculptor standing next to 30ton block of granite saying 
he's removing anything that doesn't look like an elephant.

> On Thu, Mar 26, 2020, 11:35 AM Chris Albertson
> 
>
> wrote:1
> > On Thu, Mar 26, 2020 at 8:19 AM R C  wrote:
> > > Hello group/list,
> > >
> > >
> > > So I am at home most of the time, working from home, like most of
> > > us probably, but since I can't really do my job from home
> > >
> > > I have been directed to look into things like "Additive
> > > Manufacturing", g-codes etc etc...
> > >
> > >
> > > I was just thinking (ok ok ..  I am bored...)  But if terminology
> > > is buffed up and 3D printing is called "Additive Manufacturing"
> > > just
> > >
> > > to make it sound better,  maybe we should start calling CNC
> > > machining "Subtractive Manufacturing", or has that already
> > > happened?
> >
> > Yes, that has already happend, years ago. What I would do to
> > look into 3D printing is buy one of the less then $200 printers and
> > make parts.  A great project is maybe a robot or a small CNC machine
> > tool made from plastic parts.  You learn best when you have a
> > project that pushes your skills just a little.
> >
> > You can also combine additive and subtrctive methods.  for example
> > print, a part then treat it as casting and clean it up on a mill or
> > lathe.   Either you need an expensive printer that can print metal
> > or you print a mold in plastic then sand cast it, then machine it.  
> > There is quite a lot to exlore at the ntersection of adding and
> > subtracting.Another is printing fixtures for machining.  Plastic
> > works well for holding and clamping odd-shape metal parts
> >
> > > Ron
> > >
> > >
> > >
> > > ___
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> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> > --
> >
> > Chris Albertson
> > Redondo Beach, California
> >
> > ___
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] CNC terminology

[Stuart Stevenson]

For years when someone has asked "What do you make?" my answer has been
"chips". You just get the raw material and make chips out of everything
that is not part.

On Thu, Mar 26, 2020, 11:35 AM Chris Albertson 
wrote:

> On Thu, Mar 26, 2020 at 8:19 AM R C  wrote:
>
> > Hello group/list,
> >
> >
> > So I am at home most of the time, working from home, like most of us
> > probably, but since I can't really do my job from home
> >
> > I have been directed to look into things like "Additive Manufacturing",
> > g-codes etc etc...
> >
> >
> > I was just thinking (ok ok ..  I am bored...)  But if terminology is
> > buffed up and 3D printing is called "Additive Manufacturing" just
> >
> > to make it sound better,  maybe we should start calling CNC machining
> > "Subtractive Manufacturing", or has that already happened?
> >
>
> Yes, that has already happend, years ago. What I would do to look into
> 3D printing is buy one of the less then $200 printers and make parts.  A
> great project is maybe a robot or a small CNC machine tool made from
> plastic parts.  You learn best when you have a project that pushes your
> skills just a little.
>
> You can also combine additive and subtrctive methods.  for example print, a
> part then treat it as casting and clean it up on a mill or lathe.   Either
> you need an expensive printer that can print metal or you print a mold in
> plastic then sand cast it, then machine it.   There is quite a lot to
> exlore at the ntersection of adding and subtracting.Another is printing
> fixtures for machining.  Plastic works well for holding and clamping
> odd-shape metal parts
>
> >
> >
> >
> > Ron
> >
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
>
> --
>
> Chris Albertson
> Redondo Beach, California
>
> ___
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>

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Re: [Emc-users] CNC terminology

[Chris Albertson]

On Thu, Mar 26, 2020 at 8:19 AM R C  wrote:

> Hello group/list,
>
>
> So I am at home most of the time, working from home, like most of us
> probably, but since I can't really do my job from home
>
> I have been directed to look into things like "Additive Manufacturing",
> g-codes etc etc...
>
>
> I was just thinking (ok ok ..  I am bored...)  But if terminology is
> buffed up and 3D printing is called "Additive Manufacturing" just
>
> to make it sound better,  maybe we should start calling CNC machining
> "Subtractive Manufacturing", or has that already happened?
>

Yes, that has already happend, years ago. What I would do to look into
3D printing is buy one of the less then $200 printers and make parts.  A
great project is maybe a robot or a small CNC machine tool made from
plastic parts.  You learn best when you have a project that pushes your
skills just a little.

You can also combine additive and subtrctive methods.  for example print, a
part then treat it as casting and clean it up on a mill or lathe.   Either
you need an expensive printer that can print metal or you print a mold in
plastic then sand cast it, then machine it.   There is quite a lot to
exlore at the ntersection of adding and subtracting.Another is printing
fixtures for machining.  Plastic works well for holding and clamping
odd-shape metal parts

>
>
>
> Ron
>
>
>
> ___
> Emc-users mailing list
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>


-- 

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] CNC terminology

[Ken Strauss]

> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: Thursday, March 26, 2020 11:21 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] CNC terminology
>
> On Thu, 26 Mar 2020 at 15:19, R C  wrote:
>
> > to make it sound better,  maybe we should start calling CNC machining
> > "Subtractive Manufacturing", or has that already happened?
>
> It has already happened, to an extent.
>
> 3D printing is CNC after all, it even uses G-code[1]. So the
> distinction is useful.
>
> [1] In many cases, but not all
>
>
> --
> atp
Agreed, I've seen numerous references to "subtractive manufacturing" and have 
even used the term myself. The problem is that in our current world of spin 
being more important than substance, "subtractive" sounds negative.




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Re: [Emc-users] CNC terminology

[andy pugh]

On Thu, 26 Mar 2020 at 15:19, R C  wrote:

> to make it sound better,  maybe we should start calling CNC machining
> "Subtractive Manufacturing", or has that already happened?

It has already happened, to an extent.

3D printing is CNC after all, it even uses G-code[1]. So the
distinction is useful.

[1] In many cases, but not all


--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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[Emc-users] CNC terminology

[R C]

Hello group/list,


So I am at home most of the time, working from home, like most of us 
probably, but since I can't really do my job from home


I have been directed to look into things like "Additive Manufacturing", 
g-codes etc etc...



I was just thinking (ok ok ..  I am bored...)  But if terminology is 
buffed up and 3D printing is called "Additive Manufacturing" just


to make it sound better,  maybe we should start calling CNC machining 
"Subtractive Manufacturing", or has that already happened?




Ron



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[Emc-users] CNC terminology

[R C]

Hello group/list,


So I am at home most of the time, working from home, like most of us 
probably, but since I can't really do my job from home


I have been directed to look into things like "Additive Manufacturing", 
g-codes etc etc...



I was just thinking (ok ok ..  I am bored...)  But if terminology is 
buffed up and 3D printing is called "Additive Manufacturing" just


to make it sound better,  maybe we should start calling CNC machining 
"Subtractive Manufacturing", or has that already happened?




Ron



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