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Friday, November 21, 2014

3D Printing Video : Printing With Ninjaflex and Rubber TPE

So with the holidays arriving soon, I again wanted to make some gifts this year for various relatives and friends who I'll be spending the holidays with.  While searching thingiverse i found this pretty cool Bear model in the Voronoi style.

So after printing it in a transparently blue PLA filament from polymakr, I decided to try out some of the flexible filaments I've had on hand for awhile but have done nothing more than print a sample chip out .


(if you're a filament manufacturer and want me to test a sample of a filament you're developing feel free to contact me)
I tried printing out with this type of filament before, and failed, mostly because either the extruder that I was using caused the filament to buckle and just wrap itself around the stepper motor, or after extruding a bit for the first few layers would just stop extruding as the gripper gear would just lose its grip and not push the filament along ending up in "air prints".  

Being that I have about 15 rolls of various flex materials I figured I better start using these filament and decided to try various methods of getting these filament to print correctly. (read and see more after the jump!)

Friday, August 22, 2014

3D Printing : Burning Man 2014 Edition!

Design by Larry Harvey and Don Clarke, illustration by Andrew Johnstone and Jim Pire
So last year a friend of mine / co-worker, who is a die hard Burning Man attendee, decided he wanted to give out something at burning man to individuals whom he either wanted to "barter with" or just thought that they were some cool people.  

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My friend knew of my purchase of a 3d printer and he inquired about the ability to possibly develop some pendants to wear with minimal cost  to mass produce.  So I indicated we could use the 3d printer to produce a small run of objects then he could go about casting them in silicone and then in resin.  So we did exactly just that.  With the help of Taps Plastics (a local store where you can pic up the silcone casting materials and casting resin)  Well I printed out about 20 or so "master copies" of a necklace or pendant.   We then used some platinum silicone, mainly for its speed in curing, and then he spent the weeks leading up to burning man casting copies of the masters in a white resin.  After my friend then went about painting them in various colors and placing them on lanyards of various colors and materials.  From what was told to me was that He had cast about 100 or so, and ended up  handing out about 60 or so. 

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So this year with burning man approaching, he then again asked me if we could develop a new pendant.  However this time around he didn't want to spend the time casting and painting and asked if we could do everything on the 3d printer, which I replied sure we can do that if you'd like, but the cost would likely be more for less product.  He was ok with this, since he didn't have to do any real work except for final assembly. (prototypes to the left)

So over the last week I've spent my free time printing out the new pendant, its fairly simple and I only used one print head and use the z-axis stop on the makerbot to change out colors.  the initial design was just a flat .jpg/.png and I used my 3d application, cinema4d( version 7 that I had purchased years ago) to add some depth for each "layer" then extruded those layers to match 1mm increments to make color changing easier because that is what the makerbot uses, mm instead of actual layers to pause at the z-axis.  

final result and color scheme
(click to embiggen)
So The base layer was 2mm, the flames were 1mm, the burning man was 2 mm, and the final black was 1 mm for a total of 6mm in height or depth however you want to look at it.  

So if you're at burning man and see a guy giving out these pendants/necklaces say "HI" or if you see someone wearing them tell them you know of the pendants origin story, of a lazy friend with a 3d printer! ;)  

Hope you enjoyed this post and thanks for stopping by!

Monday, August 11, 2014

3D Printing : The NINTASTIC - A Fantastic Case For Your Raspberry Pi!

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This was a commissioned piece from a friend/coworker for his roommate's birthday present. They're using their Raspberry Pi as a nintendo NES emulator, so naturally the Nintastic was required as a case for the Pi.

I used the "longer model" than the "original model" since it was mentioned that if a sd card was installed into the pi the door wouldn't close on the original.
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I decided to print these out at 100microns (which looking back should have gone with 200µm, maybe even 300µm to cut the time down, as the bottom took about 15 hrs, and the top took around 9 hrs, at 30mm extruder head speeds. 
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I again used 3d2print "Grey" Filament for all the pieces involved.  Now you might ask wait a second I see a few different colors on that finished model.  Well, the black portions are model paint, as well as the red in the lettering and button highlights.   The bottom, however was entirely colored using four basic black sharpies and a 3d printed addon here to hold four of the sharpies. The over all process is explained more in detail here.  Essentially I "tinted" the filament before it went into the hot end and the outcome was a considerably darker color of grey.  It certainly very interesting to see how much of a color shift you can get. 
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Hope you enjoyed this post and thanks for stopping by!