[Coco] 3d printed EPROM cartridge housings

[Chad H]

I saw your page, impressive.  I also grabbed a copy of Mark Blair's design that he has been so gracious to share with the community recently, I'll be using yours and his as reference.  I'm still awaiting parts for my Kossel delta printer to arrive but I'm tinkering with different modeling softwares to see what might be best for me to work with.  So far I've tried Google Sketchup (which I've used for Eagle PCB 3D models too and it can export to .STL files with a plugin) and AutoDesk 123 3D.  Both are free.  So far I think I'm preferring the AutoDesk 123 3d over Google Sketchup, the tools/interface seem more intuitive IMO.  If I'm not mistaken Mark's boards were done in a commercial program, but you used 'OpenSCAD'.  It appears to rely on a bunch of code to do the models, or atleast from the screen shots it appears that way.  How easy is that to use?

Also, it would be nice to be able to import and edit .STL files.  Google Sketchup cannot do this it seems.  Fortunately AutoDesk 123 3D can.   My intention is to start with a good solid layout for standard EPROM type cartridge housings then do cutout modifications for my externally controlled EEPROM boards.  Also, in the future, I still intend to clone one of the FD-50x FDC controllers, with upgraded support for 16K ROM's and bank switch capability built right in.  I will probably do a custom 3D print enclosure for these as well.

- Chad H
http://sites.google.com/site/cbhlab101/

-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Joel Ewy
Sent: Saturday, November 07, 2015 9:39 PM
To: coco at maltedmedia.com
Subject: Re: [Coco] 3d printed EPROM cartridge housings

On 10/26/2015 12:55 PM, chadbh74 wrote:
>     I'm in the works of building a delta 3d printer that I plan on using to
>     Make, among other things, cases for EPROM boards.   I've been working
>     on the layout for each half of the cartridge in Google Sketch up 3d
>     modeler,  which I can export to the needed .STL format and convert to
>     .gcode from there.  I was wondering though if perhaps someone already
>     had a perfected layout in STL they might share for reference.  I intend
>     to make a version with a slot for my external controllers.  The jhead I
>     ordered is all metal and is supposed to be able to do many types of
>     materials, although I've only ordered PLA and ABS for the time being to
>     experiment with which would be best for different cases.  If anyone
>     could offer any insight Into this I would greatly appreciate it.
>     Thanks!
>
>     -Chad
>
>     https://sites.google.com/site/cbhlab101/
>
>     Sent from my Galaxy S4
>
I made a first stab at a CoCo case design to print on my old Thing-O-Matic using OpenSCAD.  I wasn't trying to exactly replicate the Tandy cartridge housings, and I never quite finished the design, though I got a good start and it wouldn't take much to complete. You can see a screenshot of the design on my blog: 
https://8littlebits.wordpress.com/2013/04/16/cartridge-housing-cad/ If you think it would do you any good, I could share my code, but you probably are farther along than where I left this project.  It might take me a day or so before I could dig up the files.

JCE


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