OT: Are desktop 3-D printers ready for prime time?

[John Doe]

edward.ming.lee@gmail.com wrote:

John Doe wrote:

Ordered one. Can't wait! Will be using ASA filament. I have had
zillions of uses for such a thing over the last many decades.
Unfortunately it was a bit [after] my time.

Dying to find out if strong parts can be made. Lots of people
talk about that, but there is no way to know without actually
trying. Either that, or the people who talk about it just don't
give enough information.

For example... Can you make a spacer out of it, and how much
crushing force will it withstand. Will see!

Well, it depends on the software. The software tends to save
materials on the inside layer; so there are more air gaps inside.
However, you can tell it to use more materials, less air gaps, and
stronger parts.

Regarding crushing force, i would compare it to wood, but not
steel.

That doesn't say what sort of filament. Seems nobody knows or nobody
cares to describe it well enough. But doesn't matter now!

Maybe more skillful searching to find people who use the most durable
(or least frail) filaments for mechanical parts would have helped.

 

[John Doe]

I said "spacer", not "washer".
Anybody who makes random stuff knows better.
You need ALL different sizes (and shapes) of materials that cannot be
easily made from ordinary stock. I sometimes end up having to think
about all the things I have ever seen in stores, trying hard to recall
something that might match my purpose.



DecadentLinuxUserNumeroUno@decadence.org wrote:

John Doe <always.look@message.header> wrote in
news:r8fque$6ou$1@dont-email.me:

Ordered one. Can't wait!
Will be using ASA filament.
I have had zillions of uses for such a thing over the last many
decades. Unfortunately it was a bit before my time.

Dying to find out if strong parts can be made. Lots of people talk
about that, but there is no way to know without actually trying.
Either that, or the people who talk about it just don't give
enough information.

For example... Can you make a spacer out of it, and how much
crushing force will it withstand. Will see!


Well, it sounds like what you really mean is a thrust washer.

That will depend on that surface quality of the two surfaces it
will be doing the "washing" for. The surface and the material will
determine the coefficient of friction. It will also matter how much
rotating use it gets while it is "bearing" against the forces it is
sandwiched between.

You would be far better off gettinf sheet stock and cutting out a
washer.

If you refer to a "stanchion", then a lot of factors "weigh" in to
it.

 

John Doe <always.look@message.header> wrote in
news:r8g0o2$1s0$2@dont-email.me:

> I said "spacer", not "washer".

OK. I said washer not spacer.

> Anybody who makes random stuff knows better.

What I said was home made random stuff.

You need ALL different sizes (and shapes) of materials that cannot
be easily made from ordinary stock. I sometimes end up having to
think about all the things I have ever seen in stores, trying hard
to recall something that might match my purpose.

I would still have called it a stanchion. Then you can randomly
test it for crush strength... at random moments.

Use GrabCAD and get great ideas from others' works, which many of
them were inspired by yet others.

<https://grabcad.com/library>

<https://grabcad.com/library/portable-papr-powered-air-purifying-
respirator-1>

<https://grabcad.com/library/ventilation-covid-19-1>

 

[Ricky C]

On Thursday, April 30, 2020 at 10:24:00 PM UTC-4, John Doe wrote:

edward.ming.lee@gmail.com wrote:

John Doe wrote:

Ordered one. Can't wait! Will be using ASA filament. I have had
zillions of uses for such a thing over the last many decades.
Unfortunately it was a bit [after] my time.

Dying to find out if strong parts can be made. Lots of people
talk about that, but there is no way to know without actually
trying. Either that, or the people who talk about it just don't
give enough information.

For example... Can you make a spacer out of it, and how much
crushing force will it withstand. Will see!

Well, it depends on the software. The software tends to save
materials on the inside layer; so there are more air gaps inside.
However, you can tell it to use more materials, less air gaps, and
stronger parts.

Regarding crushing force, i would compare it to wood, but not
steel.

That doesn't say what sort of filament. Seems nobody knows or nobody
cares to describe it well enough. But doesn't matter now!

Maybe more skillful searching to find people who use the most durable
(or least frail) filaments for mechanical parts would have helped.

I have made things I needed from plastic, wood or metal. I have yet to find a need for something that would best be made on a 3D printer. I believe they are mostly used for making early prototypes of items that will ultimately be made by other means. It is still the exception for them to be used to make production items although there is potentially a niche market for items that are too pricey to make other ways but too low volume for mass production.

I see there are online services to make items by 3d printing just as you can have PCBs made. Why make your own when you can get better quality at a lower cost from a service?

https://www.sculpteo.com/en/?icid=3DPRINTING:XLPB::SERVICES::LEARN

This is one of many. I notice that many service companies offer many other manufacturing services as well.

--

Rick C.

-++ Get 1,000 miles of free Supercharging
-++ Tesla referral code - https://ts.la/richard11209

 

[John Doe]

Obviously my interest is not "production items".
Anecdotes and lack of experience with making things
is not an argument.

It shouldn't post while under the influence of drugs...

--
Ricky C <gnuarm.deletethisbit@gmail.com> wrote:

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Subject: Re: OT: Are desktop 3-D printers ready for prime time?
From: Ricky C <gnuarm.deletethisbit@gmail.com
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On Thursday, April 30, 2020 at 10:24:00 PM UTC-4, John Doe wrote:
edward.ming.lee@gmail.com wrote:

John Doe wrote:

Ordered one. Can't wait! Will be using ASA filament. I have had
zillions of uses for such a thing over the last many decades.
Unfortunately it was a bit [after] my time.

Dying to find out if strong parts can be made. Lots of people
talk about that, but there is no way to know without actually
trying. Either that, or the people who talk about it just don't
give enough information.

For example... Can you make a spacer out of it, and how much
crushing force will it withstand. Will see!

Well, it depends on the software. The software tends to save
materials on the inside layer; so there are more air gaps inside.
However, you can tell it to use more materials, less air gaps, and
stronger parts.

Regarding crushing force, i would compare it to wood, but not
steel.

That doesn't say what sort of filament. Seems nobody knows or nobody
cares to describe it well enough. But doesn't matter now!

Maybe more skillful searching to find people who use the most durable
(or least frail) filaments for mechanical parts would have helped.

I have made things I needed from plastic, wood or metal. I have yet to find a need for something that would best be made on a 3D printer. I believe they are mostly used for making early prototypes of items that will ultimately be made by other means. It is still the exception for them to be used to make production items although there is potentially a niche market for items that are too pricey to make other ways but too low volume for mass production.

I see there are online services to make items by 3d printing just as you can have PCBs made. Why make your own when you can get better quality at a lower cost from a service?

https://www.sculpteo.com/en/?icid=3DPRINTING:XLPB::SERVICES::LEARN

This is one of many. I notice that many service companies offer many other manufacturing services as well.

--

Rick C.

-++ Get 1,000 miles of free Supercharging
-++ Tesla referral code - https://ts.la/richard11209

 

[Dan Purgert]

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Lasse Langwadt Christensen wrote:

torsdag den 23. april 2020 kl. 20.13.18 UTC+2 skrev Ricky C:
On Thursday, April 23, 2020 at 10:12:42 AM UTC-4, jla...@highlandsniptechnology.com wrote:
On Wed, 22 Apr 2020 23:40:17 -0000 (UTC), John Doe
always.look@message.header> wrote:

Seems many 3-D printers in the $500-$750 (US) range can do ABS
plastic now. Or not?

Thanks.

Aren't they slow? I've read of interesting shaped parts taking days to
print.

Not sure what you've heard. Something like the visor bracket would
take some time, but not ridiculous amounts like days. For the most
part construction time is related to the amount of material required.


I as far as I can tell it takes about an hour to print the visor bracket,
in contract to that I saw some factory with a single injection molding
machine is making 5000 similar brackets a day

Sounds about right -- but given the problems with distribution we're
tending to have right now, it doesn't really matter how fast a factory
halfway across the country can produce visors.

Sure, a (single) printer may only be able to make a few dozen of these
MacGuyver shields ... but if the option is "a few dozen / day" or
"none", it's not exactly a difficult decision.



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--
|_|O|_| Github: https://github.com/dpurgert
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