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3D Metal Printing at Home

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Jayna Sheats
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Manager
Metal printing
Jayna Sheats   11/18/2013 12:17:50 PM
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Pardon me if I remain in the skeptical corner.  Once again, a potentially valuable tool or process is being buried in hype.  What kind of metal properties will these sintered particulates (with some residual binder) have?  How much will the kiln (mentioned so casually in the article, and not at all in the video) cost?  (For anything other than solder it has to reach a whole lot higher temperature than your kitchen oven!)  If you want two different metals in the same piece, what will the interface look like?


The problem with the hype about 3D printing is that it ignores all these and many other fundamental subtlties of materials processing (thermal history, mechanical working, etc. etc.).  There are some applications for which these won't matter: most items of art don't depend on a precise annealing schedule, for example, nor do they need high purity or strength.  But 3D technologies are being sold (hyped) as if these issues didn't exist.  WHy would one make a motor (which uses several different metals and insulators) this way instead of buying one with optimized properties for a small fraction of the cost?

krisi
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CEO
Re: Metal printing
krisi   11/18/2013 2:17:58 PM
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I agree with Jayna...this 3D printing PR is getting really annoying...do you really expect me to design my own chair and print it at home for few thousands dollars??? and even at that price it would be very lousy chair made out of metal or plastic and no movable parts not to mention sophisticated functions like massage or heating...Kris

Max The Magnificent
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Re: Metal printing
Max The Magnificent   11/18/2013 3:52:04 PM
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@Jayna: How much will the kiln (mentioned so casually in the article, and not at all in the video) cost?

Well, I have a ceramic kiln sitting on my back deck that reaches liquid glass temperatures, so I guess I could use that :-)

 

 

Max The Magnificent
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Re: Metal printing
Max The Magnificent   11/18/2013 3:58:29 PM
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@krisi: ...do you really expect me to design my own chair and print it at home for few thousands dollars?

Who have you been talking to? No one expects you to design your own chair. Settle down. Take a "Chill Pill" and relax in your store-bought massage chair (LOL)

David Ashton
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Re: Metal printing
David Ashton   11/19/2013 4:37:31 AM
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@Max... "Well, I have a ceramic kiln sitting on my back deck..."  so how much did THAT cost?

To be honest the things he produced looked fairly crude...those gears have a LOT of play....but one of his stated objectives is to refine the process.

I think for the money involved I'd rather get a small metal lathe and some other tools....

 

David Ashton
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Firing the "clay"
David Ashton   11/19/2013 4:39:57 AM
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I wonder if inductive heating could be used rather than a kiln?  It would depend on how conductive his "clay" is ??

Max The Magnificent
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Re: Metal printing
Max The Magnificent   11/19/2013 11:37:31 AM
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@David: ...so how much did THAT cost?

Since it keeps me out if trouble, my wife thinks it's worth every penny :-)

Max The Magnificent
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Blogger
Re: Metal printing
Max The Magnificent   11/19/2013 11:38:34 AM
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@David: I think for the money involved I'd rather get a small metal lathe and some other tools....

I must admit that I'm becoming more and more tempted by the idea of a small lathe and a small milling machine...

David Ashton
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Re: Metal printing
David Ashton   11/19/2013 3:09:18 PM
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@Max...re lathes...a friend of mine had a Myford ML7 (3.5" swing, 20" bed) which I spent many happy hours playing on (and did some useful stuff!)    For really small stuff (less than 2'' x about 5" or 6") there was a thing called the Emco Unimat.  But both are expensive - I saw a Myford for $1250 on Ebay and a Unimat for $500+.  I guess there are other things these days, with CNC no doubt.    I so need to win the lotto......

Max The Magnificent
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Re: Metal printing
Max The Magnificent   11/19/2013 3:13:19 PM
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@David: I so need to win the lotto......

That's certainly the only way I'm going to be able to afford all the cool things I want to play with :-)

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