3D print Acorn Atom case

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paulv
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Re: 3D print Acorn Atom case

Postby paulv » Mon Jan 27, 2014 8:17 pm

leenew wrote:** it may even benefit from the top being a bit shallower?? **


I'm not sure about that. If you look closely at the end with the bumbs on, you'll see that there's a notch on the underside of the fascia which allows you to get a screwdriver under and lift the cover out of the socket again.

I guess you could make it thinner and lose the notch but then it'd be trickier to remove.

As we're virtually redesigning it though, a chamfered edge wouldn't go amiss...

Paul

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leenew
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Re: 3D print Acorn Atom case

Postby leenew » Mon Jan 27, 2014 8:32 pm

I see now Paul, and I agree with the chamfering too.
How many of these would be needed to be produced to make them pretty cheap.
I would have half a dozen or maybe 10.

I can do a reasonable job of cleaning up a case that has had the cover punched out, (a-la Mark RC's instructions) but I would much prefer the widget.....

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danielj
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Re: 3D print Acorn Atom case

Postby danielj » Mon Jan 27, 2014 9:59 pm

3d printed won't look very good. Injection moulded and you're looking at a thousand or more to start getting any economy of scale...

d.

iainjh
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Re: 3D print Acorn Atom case

Postby iainjh » Mon Jan 27, 2014 10:33 pm

imperfections would likely sand out wouldnt they? I 'd love to try one out. Cant be worse than it is with an open ashtray!
:)

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nOmArch
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Re: 3D print Acorn Atom case

Postby nOmArch » Mon Jan 27, 2014 10:42 pm

Just use ABS and then give it an acetone bath.
Alex

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danielj
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Re: 3D print Acorn Atom case

Postby danielj » Tue Jan 28, 2014 8:30 am

Mmm, noxious solvents ;)

Yes, that would be the way (although personally I'm not printing ABS or using acetone baths with a couple of small people in close proximity).

d.

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nOmArch
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Re: 3D print Acorn Atom case

Postby nOmArch » Thu Apr 10, 2014 9:37 pm

danielj wrote:3d printed won't look very good..


I dunno, my one seems to be working well

Image

These were all printed at 0.3mm and mine can do 0.1mm and some people have got down to 25 microns a layer.

Have a few mods to do til I can do that but should only take about £75. and £45 of that is a new all metal hotend.

The big one took about ten hours to print and would of been near perfect if I had increased the infill to 15-20%. As it is I used 5% and there wasn't enough internal structure to successfully hang the facial features off; hence the few defects in the cavaties.
Alex

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1024MAK
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Re: 3D print Acorn Atom case

Postby 1024MAK » Thu Apr 10, 2014 9:51 pm

Alex, your not 3D printing yourself a new foot are you :shock: :wink: :lol:

Mark
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nOmArch
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Re: 3D print Acorn Atom case

Postby nOmArch » Thu Apr 10, 2014 10:06 pm

I wish, although 3D printed limbs are now a possibility.

http://www.dailymail.co.uk/sciencetech/article-2599863/How-tech-revolutionising-prosthetics-industry-3D-printed-limbs-hands-controlled-apps-mainstream.html*

Actually very pleased with the skulls as they are pretty damn spot on for a home printer.

*Apologies for daily mail link
Alex

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richardtoohey
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Re: 3D print Acorn Atom case

Postby richardtoohey » Thu Apr 10, 2014 10:09 pm

:wink: I don't see how the Atom components fit into the skulls, though :wink:

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nOmArch
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Re: 3D print Acorn Atom case

Postby nOmArch » Thu Apr 10, 2014 10:18 pm

richardtoohey wrote::wink: I don't see how the Atom components fit into the skulls, though :wink:


I was mainly showing off the finish, Actually trying to fit any Atom components in there would be... interesting to say the least. :lol:
Alex

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danielj
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Re: 3D print Acorn Atom case

Postby danielj » Fri Apr 11, 2014 7:49 am

:D - I still don't think 3d printed computer cases would look particularly nice, the little ridges would grate on me. Good work on the skulls though, they've come out very nicely. Are you going to stick them on the end of sticks?

What are you using for slicing software?

d.

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nOmArch
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Re: 3D print Acorn Atom case

Postby nOmArch » Fri Apr 11, 2014 4:23 pm

100 micron layers are almost indistinguishable to the human eye, a 50 micron layer would probably do the trick or be good enough.

I was using Repetier-Host and Slic3r but a friend got me to try Cura and it flipping rocks. I'm not a big fan of the interface as you cant really do stuff on the fly like you can with Repetier but it seems to do a much better job slicing than Slic3r does. I had a quick look at skeinforge but decided almost immediately that it wasn't for me.

I will probably end up using Cura to slice and Repetier to print.

If you want smooth you either have to use ABS and an acetone bath or shell out considerably more than £450 and get something like the Form One which uses stereo lithography and lasers.

they cost about $3000.

Alternatively I have something called the Peachy Printer on order which uses the same idea as a Form One ie lasers and resin but only costs $99.

The beta test kits have just gone out to the backers and the finished version should be along in a few months.
Alex

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danielj
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Re: 3D print Acorn Atom case

Postby danielj » Fri Apr 11, 2014 6:04 pm

Skeinforge is a dark art - it took quite a bit of nudging to get it to do what I wanted... I've had good results with Slic3r, but interested to hear that Cura's good. I shall look into it!


d.

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nOmArch
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Re: 3D print Acorn Atom case

Postby nOmArch » Sun Apr 13, 2014 8:27 pm

Fully working monkey wrench. First ever 0.2mm print and it went very well.

Image
Alex

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