Discussion:
3D printing with titanium
(too old to reply)
F. George McDuffee
2014-11-13 21:47:22 UTC
Permalink
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
--
Unka' George

"Gold is the money of kings,
silver is the money of gentlemen,
barter is the money of peasants,
but debt is the money of slaves"

-Norm Franz, "Money and Wealth in the New Millenium"
Jim Wilkins
2014-11-13 22:08:56 UTC
Permalink
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
--
Unka' George
I tried additive fabrication of aluminum with a TIG torch. I could
pile up a column about 1/4" diameter and 2" high before my wrist lost
the steadying support of the table. It was at night school so I
couldn't find a firebrick to try carving and filling a mold.
-jsw
Martin Eastburn
2014-11-14 03:28:53 UTC
Permalink
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Gosh I wish my 3D printer was that good that it would do metal also.

The company I bought from has a metal one with like specs.

I move vertically by 70 microns. print in ABS, PLA, Nylon.

Still learning but works nicely I have 3 colors. :-)

Martin E
F. George McDuffee
2014-11-14 07:36:00 UTC
Permalink
On Thu, 13 Nov 2014 21:28:53 -0600, Martin Eastburn
Post by Martin Eastburn
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Gosh I wish my 3D printer was that good that it would do metal also.
The company I bought from has a metal one with like specs.
I move vertically by 70 microns. print in ABS, PLA, Nylon.
Still learning but works nicely I have 3 colors. :-)
Martin E
================
As the filiment [thermoplastic] printers are essentially
computer controlled hot melt glue guns, would it be possible
for someone to rig up a wire feed mig/tig torch and print
with metal, possibly using a graphite platten to both
conduct the current and release the part?

What technology is out there to accurately position molten
metal micro dots/pixels? How small do flame spray plasma
units go and how small a bead can they deposit?
--
Unka' George

"Gold is the money of kings,
silver is the money of gentlemen,
barter is the money of peasants,
but debt is the money of slaves"

-Norm Franz, "Money and Wealth in the New Millenium"
Pete C.
2014-11-14 15:57:35 UTC
Permalink
Post by F. George McDuffee
On Thu, 13 Nov 2014 21:28:53 -0600, Martin Eastburn
Post by Martin Eastburn
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Gosh I wish my 3D printer was that good that it would do metal also.
The company I bought from has a metal one with like specs.
I move vertically by 70 microns. print in ABS, PLA, Nylon.
Still learning but works nicely I have 3 colors. :-)
Martin E
================
As the filiment [thermoplastic] printers are essentially
computer controlled hot melt glue guns, would it be possible
for someone to rig up a wire feed mig/tig torch and print
with metal, possibly using a graphite platten to both
conduct the current and release the part?
What technology is out there to accurately position molten
metal micro dots/pixels? How small do flame spray plasma
units go and how small a bead can they deposit?
There was an article in the past year or so on someone doing exactly
that, building a larger 3D printer with a MIG welder and getting decent
POC results. I'm not sure if anyone has taken it beyond that initial
POC, but I expect someone is fiddling with it.
rwwink
2014-11-14 22:46:20 UTC
Permalink
I think this may be what you're referring to
http://www.appropedia.org/Open-source_metal_3-D_printer
R. Wink
Post by Pete C.
Post by F. George McDuffee
On Thu, 13 Nov 2014 21:28:53 -0600, Martin Eastburn
Post by Martin Eastburn
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Gosh I wish my 3D printer was that good that it would do metal also.
The company I bought from has a metal one with like specs.
I move vertically by 70 microns. print in ABS, PLA, Nylon.
Still learning but works nicely I have 3 colors. :-)
Martin E
================
As the filiment [thermoplastic] printers are essentially
computer controlled hot melt glue guns, would it be possible
for someone to rig up a wire feed mig/tig torch and print
with metal, possibly using a graphite platten to both
conduct the current and release the part?
What technology is out there to accurately position molten
metal micro dots/pixels? How small do flame spray plasma
units go and how small a bead can they deposit?
There was an article in the past year or so on someone doing exactly
that, building a larger 3D printer with a MIG welder and getting decent
POC results. I'm not sure if anyone has taken it beyond that initial
POC, but I expect someone is fiddling with it.
Martin Eastburn
2014-11-16 04:16:28 UTC
Permalink
Post by F. George McDuffee
On Thu, 13 Nov 2014 21:28:53 -0600, Martin Eastburn
Post by Martin Eastburn
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Gosh I wish my 3D printer was that good that it would do metal also.
The company I bought from has a metal one with like specs.
I move vertically by 70 microns. print in ABS, PLA, Nylon.
Still learning but works nicely I have 3 colors. :-)
Martin E
================
As the filiment [thermoplastic] printers are essentially
computer controlled hot melt glue guns, would it be possible
for someone to rig up a wire feed mig/tig torch and print
with metal, possibly using a graphite platten to both
conduct the current and release the part?
What technology is out there to accurately position molten
metal micro dots/pixels? How small do flame spray plasma
units go and how small a bead can they deposit?
It is made under foundry sand. Nozzles are deep in the sand
and when done, the user reaches in and grabs the item and
then the fun begins - getting rid of the sand...

They also have Food and another Candy. And so on - they invented
the process and have a wide range of units. Not cheap but good.

Martin

Martin
Martin Eastburn
2014-11-16 04:55:54 UTC
Permalink
Post by Martin Eastburn
Post by F. George McDuffee
On Thu, 13 Nov 2014 21:28:53 -0600, Martin Eastburn
Post by Martin Eastburn
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Gosh I wish my 3D printer was that good that it would do metal also.
The company I bought from has a metal one with like specs.
I move vertically by 70 microns. print in ABS, PLA, Nylon.
Still learning but works nicely I have 3 colors. :-)
Martin E
================
As the filiment [thermoplastic] printers are essentially
computer controlled hot melt glue guns, would it be possible
for someone to rig up a wire feed mig/tig torch and print
with metal, possibly using a graphite platten to both
conduct the current and release the part?
What technology is out there to accurately position molten
metal micro dots/pixels? How small do flame spray plasma
units go and how small a bead can they deposit?
It is made under foundry sand. Nozzles are deep in the sand
and when done, the user reaches in and grabs the item and
then the fun begins - getting rid of the sand...
They also have Food and another Candy. And so on - they invented
the process and have a wide range of units. Not cheap but good.
Martin
Martin
http://www.3dsystems.com/3d-printers/production/overview

Laser Sintering (SLS) and direct metal Printing (DMP)

Lots of frontiers are being blasting open.

Martin
Ed Huntress
2014-11-14 03:29:15 UTC
Permalink
On Thu, 13 Nov 2014 15:47:22 -0600, F. George McDuffee
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Very interesting. Watch out for one thing in these discussions of EB
and laser production of 3D additive metal parts: a lot of the people
writing about it mix up the terms "sintering" and "melting."

This one gets it right, although there is a contradiction in the
description that I'd like to ask them about. How do you HIP a complex
part? The answer to that is the important part of the technology.
--
Ed Huntress
Tom Gardner
2014-11-15 15:42:59 UTC
Permalink
Post by Ed Huntress
On Thu, 13 Nov 2014 15:47:22 -0600, F. George McDuffee
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Very interesting. Watch out for one thing in these discussions of EB
and laser production of 3D additive metal parts: a lot of the people
writing about it mix up the terms "sintering" and "melting."
This one gets it right, although there is a contradiction in the
description that I'd like to ask them about. How do you HIP a complex
part? The answer to that is the important part of the technology.
Nanites!
Ed Huntress
2014-11-15 15:47:15 UTC
Permalink
Post by Tom Gardner
Post by Ed Huntress
On Thu, 13 Nov 2014 15:47:22 -0600, F. George McDuffee
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Very interesting. Watch out for one thing in these discussions of EB
and laser production of 3D additive metal parts: a lot of the people
writing about it mix up the terms "sintering" and "melting."
This one gets it right, although there is a contradiction in the
description that I'd like to ask them about. How do you HIP a complex
part? The answer to that is the important part of the technology.
Nanites!
Actually, the standard method is tin cans. No joke. It's used a lot on
aerospace parts and the advanced powder-metallurgy tool steels, like
CPM Rex 121.

But you can't get those tin cans around a complex part. So I'm
curious. Something new may have come about since I was last writing
about these materials.
--
Ed Huntress
Steve Walker
2014-12-11 00:50:52 UTC
Permalink
Post by F. George McDuffee
Interesting article on additive fabrication [3D printing] in
titanium using laser sintering. Zero tooling required. Just
the thing for the hobby/garage shop. :-)
http://tinyurl.com/qfojcvr
Sounds like a good market for the raw material suppliers, kinda the same
as the suppliers of plastic filament. Way overpriced for the material
being provided. Oversized fishing line, pretty much the same process to
make.

I imagine the meetings went kinda like, "Hey, let's promote a new
printer, and follow the inkjet model of low machine cost, high
consumable cost."

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