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3D Print Replica HD 20 SC Enclosure?

Trash80toHP_Mini

NIGHT STALKER
This view posted above would have side clips outboard of the sides and top where I put the bottom side in this view, grooves re-positioned to match.

View attachment 27752

Oblique view of ski ramp SCSI2SD installation. Chassis/bottom of case and clips for bezel/backplane and grooved mating surface for clips on the bent top would be one fairly complicated module with a higher profile than the other "three" sections for things like inverted ski ramp SCSI2SD supports. Cips for the 3.5" single drive PSU and 3.5" drives would be molded into the base module. That would be held in place for the standard power plug positioned at the rear for use with standard power cord. Front and back modules would be overlapped by the clip-side-top-side-clip assembly. Bottom chassis module/front bezel module/backplane module assembly would act as jig for hair dryer bending processes. 

HDSC-70pct-SCSI2SD-EscapeHatch-00.JPG

That's it for info specific to your project, I'll head back to my own sandbox now. [;)]

 
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PotatoFi

Well-known member
Ok, I've finally had some time to sit down and work on this project! Here's where the model is at right now:

Screen Shot 2019-05-19 at 8.12.52 PM.png

So far, it's basically just a shell, but it is dimensionally accurate. What's not done is all interior drawing, the back, and rounded corners. So there's quite a bit left, but the basic shape is there.

One thing I realized immediately on getting the hard drive is that it's deeper than the base of a Macintosh. That was a pretty fatal blow to printing it on my printer... I knew it was going to be tight, but not this tight. Here's a view in my slicer application, from the bottom so you can see the size of the print bed.

Screen Shot 2019-05-19 at 8.14.23 PM.png

Still, doing a "shallower" version on my printer is still a possibility, as we're good on width - just not depth. I'll keep working on things. 1/4 scale version printing now, will post an update tonight or tomorrow morning.

 

PotatoFi

Well-known member
Animated GIF showing some details:

Case GIF.gif

Tiny scale model that I knocked out on the printer last night!

IMG_0320.JPG

 

PotatoFi

Well-known member
Nice! Will SCSI2SD fit into that scale model or is it a tad too small?
Haha, too small for sure! But don't worry... I think a SCSI2SD version sounds like a great idea, and wouldn't be hard to do. I really like your ideas around a "modular" approach that could allow a lot of different configurations. 3D printing is perfect for "one-off" parts, after all.

 

PotatoFi

Well-known member
Hey guys, just wanted to update you to say that I REALLY REALLY WANT TO WORK ON THIS. But... I've had a million things pop up. Surprise business trips, cooling system died in my car (about to go tear into that right now), and maintenance issues on the house. So keep an eye on the thread... but it might be 3 weeks or so before I can touch this again. Soon!

 

superjer2000

Well-known member
@PotatoFi  What 3d printer do you have?  I've got a monoprice mini select v2 which works great but is only 12 x 12 x 10 build area.  I've been looking at the new Prusa or Creality but those are around 21 cm sq x z axis which is normally enough.  Your printer seems to have a bigger build area than that. 

Thanks!

 

Crutch

Well-known member
@PotatoFi looking great so far!  FWIW I’ve always thought the fact that the 20SC is deeper than a classic Mac to be a bug, not a feature.  I would be delighted with one that actually fits snugly, HD20-style!

 

PotatoFi

Well-known member
@PotatoFi  What 3d printer do you have?  I've got a monoprice mini select v2 which works great but is only 12 x 12 x 10 build area.  I've been looking at the new Prusa or Creality but those are around 21 cm sq x z axis which is normally enough.  Your printer seems to have a bigger build area than that. 
I have a Prusa i3 MK2S. I've had about a dozen 3D printers since building my first in 2011... if you want to upgrade, get a Prusa. It's so good that I just can't recommend anything else. Build volume is 25x21x21 cm, or 9.84x8.3x8.3 inches.

@PotatoFi looking great so far!  FWIW I’ve always thought the fact that the 20SC is deeper than a classic Mac to be a bug, not a feature.  I would be delighted with one that actually fits snugly, HD20-style!
Whoa, okay so the HD20 was the same depth as the Mac, and the 20SC is deeper?! That sounds like a bug to me as well! That solves the "my printer isn't deep enough" problem I guess!

Edit: Here's a photo of my printer, and basically all of my Macs, excluding laptops. :)

IMG_0351.JPG

 
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Crutch

Well-known member
Well ... The HD20 is actually deeper too, but only in the one area that sort of sticks out the back, on the right side where the fan is.  It’s a correctly-sized Mac riser with a lump stuck to it, basically.  (A 3D-printed replica HD20 case without the lump would be perfect for mounting a SCSI2SD inside!)

The 20SC is just too deep all the way across.  It always bothered me.  I guess it would look fine sitting atop a Mac II box.

 

maceffects

Well-known member
@PotatoFi what a great setup!  No worries, I have been all of the states lately on business and dealing with house issues as well.  We'll get there eventually :cool:

 

Trash80toHP_Mini

NIGHT STALKER
@PotatoFi looking great so far!  FWIW I’ve always thought the fact that the 20SC is deeper than a classic Mac to be a bug, not a feature.  I would be delighted with one that actually fits snugly, HD20-style!
It's neither actually. Every ZFP case I've ever had shares the same form factor (limitation) due to component specs involved. Remember there's a 5.25" SCSI drive with drive connector to cable to connector and passthru connector inhabiting that cubic. HD20 components/requirements were less constricting. In the day, ZFP form factor was an overriding function over form feature which really doesn't matter to this day considering overall cable cubic at the rear of any Mac

Modularity again rears its ugly head. Shorter top and bottom sections for a more aesthetically pleasing length using unitized stock backplane and front bezel poses no problem. Customized removable media drive front bezels would be coupled with standard 5.25" form factor parts. In every modular case setup, printer limitations become less problematic.

 

PotatoFi

Well-known member
If you wanted to go totally wild, you could model and build a replica of one of Apple's various 3.5" external drives.
Not sure why I just noticed this... but that is a FANTASTIC idea. Much more viable on a desktop 3D printer, too. If someone wants to send a 3.5" external drive my way, I'd be happy to model that. Might not be very fast (my track record so far is pretty bad).

@PotatoFi Ya got SC yet? When it comes in be sure to go by the ServiceSource and remove the lid VERY carefully.
I'm ready to take it apart. Can you point me towards this resource?

 

Trash80toHP_Mini

NIGHT STALKER
Ran across pics from this thread whilst searching something else in "my attachments." I hope things have settled down for you at home and at work. Have you had any time to play with this project yet?

 
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