Proper Atari ST gray and 3D printing

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troed
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Proper Atari ST gray and 3D printing

Postby troed » Wed Feb 22, 2017 8:27 pm

"Hey Troed. You know that Mega ST of yours with Alan H's MonSTer? Without external switches for TOSSEL and FLASHSW you're not really making much use of its flash rom functionality"

"Oh, and don't cut any holes in the original casing. But make it look nice."

DSC_0143_small.JPG


DSC_0144_small.JPG


DSC_0145_small.JPG


DSC_0146_small.JPG


DSC_0147_small.JPG


DSC_0149_small.JPG


3d_model.png


Lessons learned:

FS 36307 does seem to be a perfect match for original Atari ST gray (I picked up this knowledge from a thread at Atari Age and hunted down a source for the color locally). However, most cases are quite yellowed - so compare with the tiny non-yellowed patch of the original part, or the top housing which is almost not yellowed at all. Also, I should probably invest in an airbrush to get an even paint layer.

Oh, and yes, a 3D printer does make it possible to keep the original housings intact in some cases ;)
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mpattonm
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Re: Proper Atari ST gray and 3D printing

Postby mpattonm » Wed Feb 22, 2017 9:09 pm

To my knowledge, these are matching color codes for ST line: 260/520ST is RAL 7044, anything higher is RAL 7038. I am not familiar with FS color coding system, but RAL should be recognised worldwide.
As regards to yellowing, why do not you give your ST nice slow peroxide bath? Just dip it fully in 15-20% liquid peroxide for one or two weeks, your plastics will be unrecognisable from new. Unlike different retrobright recepies, I suggest NOT to use any kind of UV light or even expose the bath to direct sunlight. UV light generally accelerates the whitening process, but if you go this direction you could realize in the end that surfaces under direct UV light were overbleached while rest might still be yellow. In any case you do not need it afterall. Indirect daylight is sufficient and safe.
Two more very important recommendations: Use just pure technical grade peroxide, do NOT mix it with anything else. And before you start with peroxide, thoroughly CLEAN and DEGREASE all the plastic. I am lazy person so I simply throw that plastic to dish wash mashine first (low temperature cycle), that is unless wife is watching, but then I at least properly brush it with Fairy anyway. If possible last cleaning round is alcohol one.

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troed
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Re: Proper Atari ST gray and 3D printing

Postby troed » Wed Feb 22, 2017 9:58 pm

RAL 7038 seems to be FS 36440
FS 36307 would then be RAL 7030

(according to http://www.brunelhobbies.com.au/lifecolor/comptable.pdf )

Regarding peroxide baths it's my understanding that the effect is only temporary.

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Re: Proper Atari ST gray and 3D printing

Postby mpattonm » Thu Feb 23, 2017 1:56 pm

Well you decide. The floppy drive is taken out from 1040STF, the chassis is from 520ST. They are both in pretty original condition, well preserved.
http://www.imagehosting.cz/?v=wp20170223.jpg
http://www.imagehosting.cz/?v=wp2017fmf.jpg
http://www.imagehosting.cz/?v=wp2017uiu.jpg

joska
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Re: Proper Atari ST gray and 3D printing

Postby joska » Thu Feb 23, 2017 2:21 pm

Nice :)

I found another solution to the "don't want to modify the case"-problem. I'm snooping on keyboard traffic using a microcontroller, so I can switch TOS with the keyboard.
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Firebee - Falcon060 - Milan060 - Falcon040 - MIST - Mega ST - STM - STE - Amiga 600 - Sharp MZ700 - MSX - Amstrad CPC - C64

crashman
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Re: Proper Atari ST gray and 3D printing

Postby crashman » Thu Feb 23, 2017 2:31 pm

Hi Troed,

could you share the 3D file?

Thanks.
260ST, 520ST, 520ST+, 520STFM, 1040STE, 4160STE, STACY 2, MEGA ST, MEGA ST2, MEGA ST4, MEGA STE, TT030, FALCON030, FALCON030 with Centurbo 2rB, Firebee
SH204, Megafile 30, Megafile 60, Megafile 44
SM124, SM146, SC1224, SC1435
Satandisk, Ultrasatan, HxC SD, Hxc SD Slim, NetUSBee, CosmosEX, Unicorn, Gotek HxC
2600VCS, LYNX, LYNX II, JAGUAR

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troed
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Re: Proper Atari ST gray and 3D printing

Postby troed » Thu Feb 23, 2017 4:31 pm

crashman wrote:Hi Troed,

could you share the 3D file?

Thanks.


https://troed.ddns.net/f/7608d54a17/

I print on an Ultimaker 2, front face down, with supports. The holes are made to spec for these slide switches:

https://www.elfa.se/en/slide-switch-on- ... simi=88.37

/Troed

crashman
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Re: Proper Atari ST gray and 3D printing

Postby crashman » Thu Feb 23, 2017 4:38 pm

Thanks!
260ST, 520ST, 520ST+, 520STFM, 1040STE, 4160STE, STACY 2, MEGA ST, MEGA ST2, MEGA ST4, MEGA STE, TT030, FALCON030, FALCON030 with Centurbo 2rB, Firebee
SH204, Megafile 30, Megafile 60, Megafile 44
SM124, SM146, SC1224, SC1435
Satandisk, Ultrasatan, HxC SD, Hxc SD Slim, NetUSBee, CosmosEX, Unicorn, Gotek HxC
2600VCS, LYNX, LYNX II, JAGUAR

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troed
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Re: Proper Atari ST gray and 3D printing

Postby troed » Thu Feb 23, 2017 4:40 pm

crashman wrote:Thanks!


Actually I just assumed the .STL was enough - let me know if you want another format more suitable for your own editing :) I CAD in Autodesk Fusion 360.

/Troed


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