3D Printed Trixie in PLA
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StaCT13 Offline
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#1
3D Printed Trixie in PLA
Does "3DP" count as a valid acronym for the hardware category? Anyways, here's an update of sorts for the printed ponies I plan on offering as a prize for the folding competition.

So, I got around to printing a test Trixie in the black PLA I have, and I'm somewhat disappointed with the results. Actually printing it was a dream; PLA doesn't warp at all, so I didn't have to babysit the print for the first 4 hours. After I took it off the build plate, the support peeled away very easily, and the surface quality of the print was very high (for being completely enclosed in support material). However, I also realized how fragile PLA is. I accidentally broke off the left leg, and the tip of the cape is somewhat damaged. Ah well, at least I have some epoxy to fix those.

I think I'll try printing another Trixie with PLA, but I'll make it a point to shut off the fan I usually have running in the room. I think PLA is still a viable material for printing such a fragile and detailed model, but I'll need to adjust my methods to make the result usable.

Anyways, here's a pic I took (the lighting really highlights the flaws):
[Image: bTgtKr6.jpg?1]
and here's the rest of the gallery: http://imgur.com/a/cMBjy#0
Retired from folding

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(This post was last modified: 2013-07-28, 11:27:09 AM by StaCT13.)
2013-07-28, 11:24:24 AM
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hiigaran Offline
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#2
RE: 3D Printed Trixie in PLA
How is the support material removed? Manually?
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2013-07-28, 11:55:01 AM
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Spazturtle Offline
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#3
RE: 3D Printed Trixie in PLA
(2013-07-28, 11:55:01 AM)hiigaran Wrote: How is the support material removed? Manually?

You just pull it off, it is only strong vertically which is what it needs to support the model. Horizontally it is very weak.
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2013-07-28, 12:20:41 PM
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RoBorg Offline
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#4
RE: 3D Printed Trixie in PLA
Looks really cool! Could you used the 3DP model to create a mould & fill that with something a bit stronger?
2013-07-28, 06:26:12 PM
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hiigaran Offline
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#5
RE: 3D Printed Trixie in PLA
(2013-07-28, 12:20:41 PM)Spazturtle Wrote:
(2013-07-28, 11:55:01 AM)hiigaran Wrote: How is the support material removed? Manually?

You just pull it off, it is only strong vertically which is what it needs to support the model. Horizontally it is very weak.

Makes sense, but aren't there little stubs left over on the actual object being printed? You have to sand it or something, don't you?
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2013-07-28, 09:41:27 PM
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StaCT13 Offline
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#6
RE: 3D Printed Trixie in PLA
(2013-07-28, 11:55:01 AM)hiigaran Wrote: How is the support material removed? Manually?

The support is made of ribbons of material that are never supposed to touch the object horizontally. They're made with less plastic than the object, so they're also much more fragile. Ideally, removing them would involve pulling one end of the ribbon and watching all the support come out cleanly, but there's almost always little bumps left over from nozzle ooze and calculation errors from the software that connect the ribbon to the object. I can usually remove most of the support by hand, but sometimes need pliers to wiggle out stubborn pieces. I then go back with a tiny flat blade screwdriver and chisel off the bumps. I find sanding doesn't work very well, since the sandpaper I tried to use embeds little pieces of bright red sand in the plastic.

(2013-07-28, 06:26:12 PM)RoBorg Wrote: Looks really cool! Could you used the 3DP model to create a mould & fill that with something a bit stronger?

I suppose I could, but I think most of the fun of printing is being able to take the object off the bed, peel away the support, and be done with it. You could potentially do that to make multiple parts from one print, though.
Retired from folding

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2013-07-28, 11:08:46 PM
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hiigaran Offline
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#7
RE: 3D Printed Trixie in PLA
By sanding, I meant more like using a fine grindstone attachment on a rotary tool, like these:

[Image: %24%28KGrHqJ,!p!F!QSW%28DJbBQJJEQGoo!~~60_35.JPG]
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2013-07-28, 11:40:09 PM
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tiwake Offline
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#8
RE: 3D Printed Trixie in PLA
And this lies the difference between a 3D printer and a rapid prototyping machine.
IRC channel Yay for brony@home (irc.canternet.org #foldingismagic)
http://derpy.me/gLbV2
2013-07-29, 05:30:59 PM
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