With the sudden appearance of what seems to be a TwiggyMac composed of mostly original prototype parts, I figured it's time to bring these pics out of their hidey hole in my War Room Hack/Post/Project Compilation threads.ClearShugartProtoMacHack™
was the name I chose for this design study, back when I was convinced that the Mac was originally intended to use the Shugart FDD Mechanism due to the abysmal productions yields and field performance of the Twiggy Drives. I was corrected re: that faulty assumption by a few members here. Since I posted my hypothesis on 'fritter way back when, some of the original Mac team have been documenting those crazy days of development. It's clear now that this sketch was more likely intended for the 5.25"Apple II FDD, not the 5.25" Shugart FDD . . .
. . . whatever, when I can get a vacuum forming rig set up, I'll be doing some CRT Tube Replacements right after doing the clear internal bezels to support the LCD's I've Chosen for several hacks using the aforementioned pair of CRT Sizes.
When those are complete, I'll move on to fabricating the forming bucks I'll need for creating the 5.25" FDD Design Study ClearProtoHoaxMackHack™
Notice the sharper lines of this design study, that's why it's third in my vacuum forming workups, I'm planning Simple -> Complex Project Development.ClearTwiggyDVDRWProtoMacHack™
Reference materials:Notes on the new TwiggyMac:TwiggyMac Pics Link
With the appearance of this latest TwiggyMac example, it's clear to see the development process of the 128k's Bucket. I'll post pics of the new arrival for comparison.
All three examples have the short run prototype front bezel for the ethereal TwiggyMac, which appears never to have been close enough to going into production for the Injection Mold Tooling to have had any texturizing done.
Notice the hand drilled cooling holes on the 3.5" Sony MicroFloppy Drive testing unit's top, that'd be the Rev. 0 ProtoBucket.-, as I see it.
Notice the cooling vanes and smooth, untexturized surfaces of what I'll call the "Arctic Camo" Rev. 1 ProtoBucket.
Note: with no available "back edge" or "top" pics of one or the other available for inspection, I can only assume that Rev. 0 has no cooling vanes on the back edge and that Rev. 1 has them on top. This makes perfect sense to me from a tooling development standpoint. Tooling was hideously expensive back in the day, and it's still very expensive to this day.
Notice the texturized, final tooling injection molded plastics on the new "Rev. 3 ProtoBucket." I use quotes because I don't really think the new "TwiggyMac" was originally a complete unit at all. I'm theorizing that it was likely remaindered ProtoMac Parts and received, at best, an early pre-release 128k Production Bucket well after the 3.5" Sony FDDs had become the main line of development.
I'm not entirely certain that the Twiggy Drive in the TwiggyMac is operable. Take a look at the pics of the Lisa"s Twiggy Drives. None of the three Prototype bezels show any sign of the "release" button (?) having ever been installed for Twiggy Drive Testing. That's a mere hunch, it's possible that the MacTwiggys may have had other means of doing what the buttons/whatevers on the front bezel of the Lisa did.
Gotta run, I'll edit in more soon.