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Old 05-01-2012, 05:55 AM   #1
SBWHART
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Default Example of 3D Printing

A ex work friend bought himself a 3D printer and asked me if I had anything that would be suitable that he could use that showed the off the printers capability to produce molding paterns, well i didn't so I contacted Rob Willson and he kindly provided a 3D drawing of a cylinder patern.

This is the result



Aparently the printer is not unlike a CNC router but instead of a cutter it has a plastic injecting nozle, you first have to convert the 3D drawing into G code as used for CNC, this is used to drive the printer that builds up a matrix of plastic to form the patern.

Neat hey

Stew



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Old 05-01-2012, 12:06 PM   #2
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Default Re: Example of 3D Printing

Totally awesome



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Old 05-01-2012, 02:57 PM   #3
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Default Re: Example of 3D Printing

Hey Stew,

Do you have that file in .stl format?
If you do could you upload a copy of it?
I can print off a copy here and show the results using our rapid prototyping printer.

Andrew

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Old 05-01-2012, 03:23 PM   #4
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Default Re: Example of 3D Printing

Spooky. Just yesterday I sent some files for a pattern to cast an Elmer's #29 cylinder to the guy who runs our 3D printer. I'll post some pics when I get them.

Our machine is not and FDM (Fusion Deposition Modeling) machine like the original post, but uses an UV cured acrylic. the resulting parts are not as strong as the ABS parts from an FDM machine, but have a better surface finish.

We also send a lot of parts out to be made on a sterolithography (SLA) machine. Those parts have a very good finish, good tolerances, and there is a wide variety of material options.

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Old 05-01-2012, 03:48 PM   #5
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Default Re: Example of 3D Printing

LOL!!
We have two Projet DP 3000 printers here.
Also using a light cured acrylic material with a paraffin wax used for support.

Great surface finish and extremely accurate.

We use them to print all of out metal denture frameworks which are then cast in an induction machine.

Andrew

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Old 05-01-2012, 04:15 PM   #6
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Default Re: Example of 3D Printing

That is funny, we have the SD3000 form the same company

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Old 05-01-2012, 04:54 PM   #7
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Default Re: Example of 3D Printing

You can get a DIY version of the commercial printers for around $500-1500 they work pretty well. The detail and tolerances isn't as good and you cant have big overhangs...

lots of users post stuff they made on this site
http://www.thingiverse.com/thing:9166
this is one of the items I designed and printed for a friend of mine. Made out of ABS plastic

I recommended checking out the makergear printers they are pretty much the best of the best when it comes to home printers.

http://www.makergear.com/products/m-series-3d-printers

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Old 05-01-2012, 05:06 PM   #8
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Default Re: Example of 3D Printing

The inexpensive 3D printers don't seem to be very reliable, can be extremely slow, may not have very good software, and the parts generally have rough surfaces.

The expensive 3D printers work well, but the equipment and material costs are astronomical to say the least.

Below is a 3D print from a $25,000 machine.
Sometimes you can farm out the 3D printing if you can get a cheap enough quote.

The inexpensive 3D printers don't seem ready for prime time yet.

Also, be aware that a raw 3D model is usless as a pattern.
You have to consider such things as shrinkage, parting surfaces, core prints, machining tolerances, draft angle, etc., etc.

Pattern making is an entirely different thing above and beyond making a 3D model.
Casting is yet another art, with gates, risers, flasks, green sand, etc.

Attached Thumbnails
3D-Printer-01.jpg   3D-Printer-02.jpg   3D-Printer-03.jpg  
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Old 05-06-2012, 07:41 PM   #9
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Default Re: Example of 3D Printing


There is a kid from the NEMMES group that has a rapman. the kit is currently 1495
he has had it on display at caben fever and the NEES shows.

site to ponder
http://reprap.org/wiki/RepRap
tin
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Old 05-06-2012, 11:33 PM   #10
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Default Re: Example of 3D Printing

Anyone had any dealings with this model 3d printer? For $550 bucks would be a good start to learn on.

http://store.solidoodle.com/index.ph...&product_id=56



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