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tags
Posts: 3162
Joined: February 21st, 2010, 12:58 pm

3D printers

April 29th, 2012, 9:31 am

World's first chocolate printer
 
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skullx
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Joined: January 27th, 2012, 5:43 pm

3D printers

May 5th, 2012, 1:07 pm

QuoteOriginally posted by: quantmehi highly recommend this piece of fine Russian literature by great Russian novelist Turgenev Gerasim rocksmuhahahaha!!!Never heard of Gerasim in such words BTW, what are the main factors of 3D printing quality? Axes? Laser thickness and its power? Material granularity?
Last edited by skullx on May 4th, 2012, 10:00 pm, edited 1 time in total.
 
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Traden4Alpha
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Joined: September 20th, 2002, 8:30 pm

3D printers

May 5th, 2012, 1:57 pm

QuoteOriginally posted by: skullxBTW, what are the main factors of 3D printing quality? Axes? Laser thickness and its power? Material granularity?It's probably most readily defined by: 1) the precision of the motion axes (step size in X, Y, and Z) which defines the roughness of the stair-steps when approximating a curved object; 2) the minimum material voxel size which defines the lower bounds on wall thickness, corner radii, and the like; 3) accretion artifacts (e.g., partially-sintered powder or messy strings where the hot-resin orifice ended a set of movements); 4) inhomogeneities (variations in internal strength due to variations in how added materials bonds to pre-existing material); 5) overall warpage due to thermal stresses.
 
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DevonFangs
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3D printers

July 19th, 2012, 12:21 pm

Free hand laser cutters vs 3D printers?
 
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Traden4Alpha
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Joined: September 20th, 2002, 8:30 pm

3D printers

July 19th, 2012, 12:47 pm

QuoteOriginally posted by: DevonFangsFree hand laser cutters vs 3D printers?They are very different fabrication technologies with very different advantages and disadvantages.Laser cutting is a 2-D subtractive manufacturing technology that relies of folding/assembly/gluing to create limited curvature 3-D structure3-D printing is a 3-D additive manufacturing technology that directly creates arbitrary curvature.3-D printing can make anything that can be made with laser cutting, but not vice versa. (Laser cutters create compound curves or objects of varying wall thickness)Laser cutting is much faster if the desired object can be represented by a low facet count polyhedra that are structurally feasible with thin-walled materials.
 
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Traden4Alpha
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3D printers

July 27th, 2012, 11:19 am

Why "gun control" won't ever work: Man makes guns with a 3D printerThe result:
 
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farmer
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Joined: December 16th, 2002, 7:09 am

3D printers

July 27th, 2012, 11:29 am

I already have a 4D printer; it takes a protracted time to print a stack of pages.
 
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skullx
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3D printers

July 27th, 2012, 1:38 pm

That's how those T-100s were made!
 
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ppauper
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Joined: November 15th, 2001, 1:29 pm

3D printers

July 27th, 2012, 3:10 pm

QuoteOriginally posted by: Traden4AlphaWhy "gun control" won't ever work: Man makes guns with a 3D printerThe result:same story was on the huffington posthttp://www.huffingtonpost.co.uk/2012/07/26/gun ... 05523.html
 
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Polter
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Joined: April 29th, 2008, 4:55 pm

3D printers

July 30th, 2012, 8:40 pm

QuoteOriginally posted by: ppauperQuoteOriginally posted by: Traden4AlphaWhy "gun control" won't ever work: Man makes guns with a 3D printerThe result:same story was on the huffington posthttp://www.huffingtonpost.co.uk/2012/07/26/gun ... 23.htmlTwo more:Hobbyist builds working assault rifle using 3D printer Do 3D Printers Make Prohibitions Impossible?QuoteThink of it -- a world of plenty, with easy localized manufacture of almost anything you might need. It's a world in which "that should be illegal" becomes a punch line.
Last edited by Polter on July 30th, 2012, 10:00 pm, edited 1 time in total.
 
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tags
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Joined: February 21st, 2010, 12:58 pm

3D printers

September 26th, 2012, 7:53 pm

a nice post on the topic. nothing worth as reality!Guest post: Visualizing data using a 3D printer
 
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exneratunrisk
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3D printers

September 27th, 2012, 10:29 am

This Machine Will Change the World?
 
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skullx
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3D printers

October 29th, 2012, 11:54 am

I've foud a good site with models:http://www.thingiverse.comHere are some:R2D2:Watch-shell for iPod nano:NU-blast lamp:http://www.thingiverse.com/thing:19478B ... ge:185460A horn for iPhone:http://www.thingiverse.com/image:174643Fractal lamp:http://www.thingiverse.com/image:122433
Last edited by skullx on October 28th, 2012, 11:00 pm, edited 1 time in total.