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!

Monday, August 4, 2014

3D Printing : These Are Maybe The Droids You're Looking For! (Stormtrooper Helmets)

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So as a birthday gift for someone who is into sci-fi, and loves Star Wars, I printed out a couple of the Stormtrooper helmets from thingiverse.  These are resculpts to better print on 3d printers.  http://www.thingiverse.com/thing:362947 

The helmets turned out pretty well at 200 microns layer height.  I printed them out using 3d2print's White filament.  I then decided to try and see what sharpies would do on the raw prints, and sadly through capillary action the ink was sucked out of the areas that I initially colored it, so I decided to "finish them off".  I then used a some automotive auto primer and filler and that worked pretty well to fill in the lines and needed a little sanding.

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Once sanded I put a few too many coats of gloss white on them, and either the weather or temp, or just too many coats ended up with not the best finish, and time being what it was as the birthday was fast approaching, I attempted to fix it the best I could and at the very last minute slapped on some model paint for details.  Certainly not my best paint job, and kind of embarrassing considering what level I used to paint to. (I used to paint minis all the time for my various RPG's and Battletech.)  But its the thought that counts right! :)  If I had more time and used my airbrush for some details I think i could have done a way better job!  Well next time!  If you have any questions feel free to contact me!

Hope you enjoyed this post and thanks for stopping by!

Wednesday, April 16, 2014

3D Printing : Filaments Filaments Filaments!

So today I wanted to share the latest round of filaments I've purchased over the last couple of months that I have printed a "sample chip" for.  This quick and dirty "test" is one I use to see how difficult it is to print with a filament, or even if its possible, and then gives me something to show off to anyone who wants something printed in a specific color or material.  Here is the sample chip I use which is taken directly from thingiverse:

So here are a few of the filaments that I've gathered in pic form below(you can click on all of the pics for the larger size):

showing off the tglase, qubd filaments, and transparent colors

Heat sensitive filament

goes from dark grey to a clear

Ultra Glow Filament

trying to show the ultra glow but phone camera is crap.

So as you can see I've been getting a lot of new samples lately.  Some of my initial observations are that the EcoFlexPLA and the 3d2 print (as seen in the video above) seem to be about the same in flexibility, that is to say they are more rigid than the NinjaFlex.  One flexible filament I haven't had a chance to test, as I have yet to order any, is the filaflex filaments from RECREUS.com.

One thing to notice in the last pic are the 5 sample chips with some writing on them in sharpie, those are all the same filament!  The 3d2prints clear rubber made those chips using varying temps and z resolutions.  Saddly I couldn't remember or reproduce the very clear one, top row middle, but that chip actually is about only 3 layers deep and didn't finish, so that could be the reason why its so clear.  The higher the temp it seems the more clear, but that could be also because I increased from 100 to 200 microns.  I should try out a 300 micron layer as I would expect even more clarity.

Now Ninjaflex is completely flexible, more akin to a silicone in my opinion, also comes basic colors as can be seen, but they just added new colors Sun(yellow), flamingo(hot pink), lava(orange), and water(a clearish rubber).

Also in the last pic you can  the very last two semi clear/white chips, those are UV sensitive materials which is why they have a redish/pinkish hue going across their middles.  I took my blue laser light and zapped em for a few seconds.  One is from maker geeks which supply for around $20 .25kg of the material where as if you go to zen toolworks on amazon, you get 1kg for 49.99. which I think is the better deal if you want a full spool.  

The last chip I want to talk about is the black one on the bottom row sitting all by itself.  Its also from zentoolworks and its black conductive filament!  Its rated at 10,000 ohms per cm and I haven't seen alot on this filament, one youtuber came up with a niffty wiper using copper tape and a design he made that changes the resistance and thus the readout on a 1 digit readout.

One thing I do want to say about the conductive filament is that holy crap is that stuff is a pain to clear our of your nozzle!  I imagine its because of the material they use as the chip feels like a graphite like material and seems a bit more brittle than normal ABS, but I ran some clear then red filament scraps about 5 m worth through the nozzle and there were still bits and pieces coming out, as can been seen in the first uv filament chip (which I printed right after I "thought" the nozzle was clean).  My suggestion is to use a seperate head if you plan on using the conductive material alot!

Hope you enjoyed this post and thanks for stopping by!