Coming soon...

discussion of games, software, hardware & emulators relating to the Acorn Atom and Acorn System machines.
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danielj
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Coming soon...

Post by danielj » Tue Oct 30, 2012 9:56 pm

To a 3D printer near you. Atom related gubbins, definitely well and truly in the prototype stage but pretty much ready to go.

Actual difficulty is in getting the speed settings on the printer right to successfully print large thin flat things.

Lid not shown...

d.
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1024MAK
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Re: Coming soon...

Post by 1024MAK » Wed Oct 31, 2012 12:08 am

:-s :o :?

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Re: Coming soon...

Post by daveejhitchins » Wed Oct 31, 2012 7:54 am

:mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen:

Dave H :D
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Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

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oss003
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Re: Coming soon...

Post by oss003 » Wed Oct 31, 2012 9:04 am

Wow ....... looks impressive =D>
Is the material wax or plastic or something else?
Are the prototypes solid enough to be used in the real world?

Kees

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Re: Coming soon...

Post by PhilYoung » Wed Oct 31, 2012 9:32 am

At the risk of appearing thick, what is it ???

At a guess, the slot might be for a memory card, so is it an external enclosure for an AtoMMC ?

Cheers,

Phil Young

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Re: Coming soon...

Post by danielj » Wed Oct 31, 2012 10:41 am

It's a box for the AtomMMC memory card holder, yes. Kees, it's completely solid enough for real world use - it's PLA plastic. That print was just the 1st centimeter, checking I'd got most of my measurements correct (pcb thickness/slot height etc).

It's a parametric design in openscad. Once it's all fixed I'll get it up on thingiverse.

Just need to find a nice dxf acorn motif from the appropriate era...

d.

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Re: Coming soon...

Post by oss003 » Wed Oct 31, 2012 11:13 am

danielj wrote:Just need to find a nice dxf acorn motif from the appropriate era...
AutoCAD works with 3D-DXF files and I know how to use AutoCAD.
I'll have a look if I can make a usable example file.

Greetings
Kees

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Re: Coming soon...

Post by oss003 » Thu Nov 01, 2012 6:46 pm

Hi Daniel,

I've attached an AutoCAD DXF file with the Acorn logo for testing.
It's an AutoCAD 2007 drawing.

Greetings
Kees
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danielj
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Re: Coming soon...

Post by danielj » Thu Nov 01, 2012 8:55 pm

oss003 wrote:Hi Daniel,

I've attached an AutoCAD DXF file with the Acorn logo for testing.
It's an AutoCAD 2007 drawing.
Hi Kees,

Brilliant... I can't wrangle a 3d dxf it seems. Can you export it as an STL?

d.

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Re: Coming soon...

Post by oss003 » Thu Nov 01, 2012 9:18 pm

danielj wrote:Brilliant... I can't wrangle a 3d dxf it seems. Can you export it as an STL?
No, that's not possible with AutoCAD but ....... do you know how to handle Python scripts?

http://code.google.com/p/meshmagick/sou ... dxf2stl.py

If not, David Boddie surely can.

Greetings
Kees

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Re: Coming soon...

Post by davidb » Thu Nov 01, 2012 11:56 pm

oss003 wrote:No, that's not possible with AutoCAD but ....... do you know how to handle Python scripts?

http://code.google.com/p/meshmagick/sou ... dxf2stl.py

If not, David Boddie surely can.
:) I'm sure Daniel can figure it out, but if it causes trouble, just send it my way and I'll take a look at it.

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danielj
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Re: Coming soon...

Post by danielj » Fri Nov 02, 2012 7:48 am

oss003 wrote:
danielj wrote:Brilliant... I can't wrangle a 3d dxf it seems. Can you export it as an STL?
No, that's not possible with AutoCAD but ....... do you know how to handle Python scripts?

http://code.google.com/p/meshmagick/sou ... dxf2stl.py

If not, David Boddie surely can.
Okeycokey, let's give it a go...

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danielj
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Re: Coming soon...

Post by danielj » Fri Nov 02, 2012 8:11 am

Right, no dice. There's no meat in that script, it's just some sort of outline. I tried to import it into Blender but that didn't get on with it either. If there's a 2d autocad outline I can take that and "pull" it into 3d.

Alternatively does this make any sense to you?

http://www.3deefab.com/en/faq/stl#autocad

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Re: Coming soon...

Post by oss003 » Fri Nov 02, 2012 8:59 am

Ok, I'll give it a try this evening.

Maybe Google SketchUp is an option, it seems there's a plugin to convert DXF to STL.

http://www.guitar-list.com/download-sof ... dxf-or-stl

Greetings
Kees

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Re: Coming soon...

Post by danielj » Fri Nov 02, 2012 9:31 am

oss003 wrote:Ok, I'll give it a try this evening.

Maybe Google SketchUp is an option, it seems there's a plugin to convert DXF to STL.

http://www.guitar-list.com/download-sof ... dxf-or-stl

Greetings
Kees
Sketchup is perfect, I generally use that for things I don't do with openscad and it can output stls with that plugin. The problem is that the free version won't load dxfs...

:D

d.

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Re: Coming soon...

Post by oss003 » Fri Nov 02, 2012 5:14 pm

Hi Daniel,

indeed .... there is an option in AutoCAD to output STL files :D
I did choose for binary output.

Greetings
Kees
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Re: Coming soon...

Post by oss003 » Fri Nov 02, 2012 6:01 pm

And another one for testing.

Greetings
Kees
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danielj
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Re: Coming soon...

Post by danielj » Fri Nov 02, 2012 8:11 pm

oss003 wrote:Hi Daniel,

indeed .... there is an option in AutoCAD to output STL files :D
I did choose for binary output.
Plasticorns.
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Re: Coming soon...

Post by oss003 » Fri Nov 02, 2012 9:48 pm

WOOWWW ....... Great job!!!

You invented a teleporter machine. =D> =D>
This evening the plasticorns were on my PC and now there are at your place.

Greetings
Kees

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Re: Coming soon...

Post by GroovyBee » Sat Nov 03, 2012 11:04 am

danielj wrote:Plasticorns.
Fantastic! Just out of interest which 'bot did you make them with and where did you get it from in the UK?

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Re: Coming soon...

Post by danielj » Sat Nov 03, 2012 12:32 pm

GroovyBee wrote:
danielj wrote:Plasticorns.
Fantastic! Just out of interest which 'bot did you make them with and where did you get it from in the UK?
It's a reprappro huxley from http://reprappro.com - Small footprint. You can source the bits yourself but it's generally easier (time=money) to get a kit with everything in it.

Build instructions here: http://www.reprap.org/wiki/RepRapPro_Huxley

As with all of them it takes some tweaking but I'm generally really pleased with its output. It's a pretty robust little machine.
d.

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Re: Coming soon...

Post by oss003 » Sat Nov 03, 2012 2:30 pm

Hi Daniel,

if you give me the measurements of the AtoMMC box cover (Length x Width x Thikness) then I can make a STL file for this (or another design)

Greetings
Kees
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danielj
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Re: Coming soon...

Post by danielj » Sat Nov 03, 2012 3:41 pm

oss003 wrote:Hi Daniel,
if you give me the measurements of the AtoMMC box cover (Length x Width x Thikness) then I can make a STL file for this (or another design)
Heheh. That looks quite funky. I'm actually compositing everything in openscad is it needs some screw-holes and the like and there are some ridges that need to line up. If you can chuck me the "ACORN ATOM" text as a 2D object (svg) I can incorporate it roughly as you've laid it out. The version you've posted above doesn't have relief to print successfully, with just the outline I can size it so it's a reasonable number of layers for the printer (it has a 0.3mm layer thickness).

d.

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Re: Coming soon...

Post by GroovyBee » Sat Nov 03, 2012 4:38 pm

danielj wrote:It's a reprappro huxley from http://reprappro.com - Small footprint. You can source the bits yourself but it's generally easier (time=money) to get a kit with everything in it.
8) Thanks for the info. Are the raw materials cheap? I know cheap is a relative term ;). What other custom things have you made with it?

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Re: Coming soon...

Post by oss003 » Sat Nov 03, 2012 5:48 pm

Daniel,

data in AutoCAD can be saved as DWG, DWS, DWT, DXF, DWF, WMF, SAT, STL, EPS, DXX or BMP file.

I've attached a new Acorn Atom logo with more relief (1mm) and a 2D DXF file.

Greetings
Kees
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danielj
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Re: Coming soon...

Post by danielj » Sat Nov 03, 2012 6:13 pm

GroovyBee wrote: 8) Thanks for the info. Are the raw materials cheap? I know cheap is a relative term ;). What other custom things have you made with it?
1kg of plastic is roughly £35. That's about 330m or 800cm^3 - you can do quite a lot with that. I've designed some little washers and a fan-mount (both on thingiverse), printed a couple of whistles, a whole bunch of calibration squares and currently doing the ATOMMMC box. Just getting to grips with the different design routes really (blender/sketchup/openscad/inkscape) and tweaking the printing to get it working nicely. Happy to discuss further out of the thread if you want to know more! :)

d.

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Re: Coming soon...

Post by danielj » Sat Nov 03, 2012 6:16 pm

oss003 wrote:Daniel,

data in AutoCAD can be saved as DWG, DWS, DWT, DXF, DWF, WMF, SAT, STL, EPS, DXX or BMP file.

I've attached a new Acorn Atom logo with more relief (1mm) and a 2D DXF file.

Greetings
Kees
Cheers Kees, I'll see what I can do with those. If you PM me your address I'll post you the very first plasticorn.

d.

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Re: Coming soon...

Post by davidb » Wed Nov 14, 2012 4:04 pm

Thinking about CAD tools, I just found this application, which apparently supports DXF format files:

http://sourceforge.net/apps/mediawiki/f ... =Main_Page

I found it via its page on the Open Source Ecology project, which is itself a very interesting project:

http://opensourceecology.org/wiki/FreeCAD

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