"Bryan doesn't drive a 1M" (bryantakespictures)
12/15/2015 at 12:48 • Filed to: None
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"Bryan doesn't drive a 1M" (bryantakespictures)
12/15/2015 at 12:48 • Filed to: None | 2
| 11 |
Since these exist:
!!! UNKNOWN CONTENT TYPE !!!
Why am I not driving around with a 3D replica of my face on my shift knob?
I know exactly what you’re thinking, so try to keep any other knob-related discussion classy, please.
Satoshi "Zipang" Katsura
> Bryan doesn't drive a 1M
12/15/2015 at 12:55 |
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Better than grabbing on a billet shift knob, I guess.
Nibby
> Satoshi "Zipang" Katsura
12/15/2015 at 13:00 |
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bite the billet or swallow it whole
uofime-2
> Bryan doesn't drive a 1M
12/15/2015 at 13:16 |
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they seem to have left out how you are supposed to thread the knob so it can be attached.
the best option is probably a heat pressed insert, but that may be tricky to get a hold especially since you probably want a blind one
BigBlock440
> uofime-2
12/15/2015 at 15:49 |
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If it’s 3d-printed, the threads could be printed into it.
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uofime-2
> BigBlock440
12/15/2015 at 16:19 |
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Haha!
You’re joking right?
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BigBlock440
> uofime-2
12/15/2015 at 16:27 |
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I didn’t read the article, but no. Why couldn’t they? Assuming they’re using some type of ABS, it may not last forever, but it should hold up ok. I don’t think a shift knob is put under that much stress.
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uofime-2
> BigBlock440
12/15/2015 at 17:24 |
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You can’t do overhanging features with FDM/PLA machines, and I’m confident that the threads wouldn’t be strong enough if you could especially with PLA, where the layer to layer bonds tend to be very weak.
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BigBlock440
> uofime-2
12/15/2015 at 21:57 |
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The machine I used we made an adjustable wrench. Sure, it was just as useless as an adjustable made of metal, but there was no trouble printing the threads or screw pieces. Pretty sure it was PLA, it was white and somewhat brittle, and I wouldn’t trust that particular material to last long, but it’s still do-able.
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uofime-2
> BigBlock440
12/16/2015 at 09:46 |
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was it an Objet, something like an Eden350 (I’m guessing this because that is a standard demo part they do)? Those have 2 print heads, one with a soluble support matrix. Those can do overhanging features, but the machines run about 50k and the material itself is a lot more expensive too. The PLA machine they are showing parts from here cannot do that, though I’ve seen concepts that were trying to add a second head to do that.
Either way if you try to make the fine sort of thread usually used for shift knobs the threads will be very prone to stripping.
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BigBlock440
> uofime-2
12/16/2015 at 10:14 |
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I think it was an Objet, it’s been a few years since I used it. I though it was standard to have a support material with 3d printing, I didn’t realize there were ones that didn’t. And here I thought it was a TA or lab assistant’s idea to make the wrench, but I guess they weren’t that creative.
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uofime-2
> BigBlock440
12/16/2015 at 10:34 |
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Many software packages can do suport material, the problem is that some types of RP machines only can lay down one type of material.
Objets are pretty unique machines, they use a UV cure resin system, they have the capablility to use 2 materials simultaneously, but the material selection is limited. They use a support material that can be washed away.
most consumer machines <10k are all PLA type which melts a thread of material and lays it down. I’ve seen some fancy ones that have two extruder heads, but I’ve never seen one that used that to have a soluble support material.