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The Mac Conversion

·580 words·3 mins
Macintosh Technology

I’m in the middle of a project to convert an old ‘Toaster’ Mac into something a bit more modern. It took a while to get the donor machine, get the tools to crack it open, and still need to do some clean-out while I wait for the first ‘new’ parts, an LCD that *should* hopefully fill the screen space reasonably well. Here’s some pics of the first part of the process.

I’ve got a box of components now, so I’m figuring out layout and what will need to be modified. I’ve started cutting acrylic for structural use.

Some more pics of my Mac conversion project. Got the monitor mostly set up today!

Due to some mistakes and learning opportunities, I’m taking a second swing at this project. Here’s some pics of the new ‘donor’ a Mac Plus in great condition.

Some work is being done on the front bezel. I may have to cut the case a bit more (which will suck!) to accommodate the cables for the display (which I can’t run internally), but it does work!

An old Mac Plus on a counter.
Mac Plus before being modified. (As far as I can tell it was dead. The later pics show the mother board was pretty corroded, probably due to a battery leak.)
Rear view of the back of the Mac shell.
Back of the case. Again, before the cutting began.
Interior of a Mac case showing damage from leaking components.
Damage from a leaking battery and/or capacitors.
The Mac's front bezel on the workbench showing a metal 'cage' containing the motherboard.
These machines were designed so all the internals attached to the front bezel.
The motherboard of the Mac SE from below.
Bottom view of the motherboard. Also, unlike the earlier ‘Compact Macs’ there’s a fan! Note the corrosion on the side of the ‘frame.’
A CRT Monitor and conencted analog baord carefully removed.
CRT monitor. I’ve heard these can maintain voltage for a surprisingly long time. Don’t mess with these.
The Mac case with PC components stacked internally.
Test fitting. My initial thought was to build up the insides in ’layers’ but this did not prove practical. Instead I ended up mounting the motherboard sideways.on a piece of vertical acrylic.
The Mac shell with a PC power supply sitting on the frame.
More test fitting.
A special piece of plastic which would have been in the original case to act as a button that can press reset and break buttons on the computer's motherboard.
I wasn’t able to re-use the programmer button unfortunately.
The Mac case or shell had a silver-colored interior. The mold was made to have signatures of much of the team that worked on it.
The infamous case signatures! This continued through much of the classic Compact Mac form factor’s life: I think my Classic II had them. Also of note is the silver appearance, which probably helps prevent RF interference.
The Mac case with a paper template taped on the side showing where vent holes would be drilled.
I decided the power supply needed to breath and planned to drill a series of vent holes. ‘Plan B’ was trying to cut to a larger size and installing a fan grate, but this was my more appealing option.
Drilling the mac case with an electric drill.
Drilling holes. This part was nerve wracking.
The result of drilling: The Mac case with holes in it, and little plastic waste pieces.
Drill Waste. The plastic actually drilled surprisingly well, producing long ‘worms’ like these.
The case mid-drilling.
I had to take breaks. This was stressful.
The case and a piece of scrap wood used to practice and prepare to drill.
Preparing to drill break.
Drilling complete showing a sort of swirly pattern of holes.
Drilling complete!
Interior of the Mac case showing the poers supply on the lower right, the mother board on an acrylic plate on the left side with the video card loosely in place. A drive mount is on the right wall.
The interior of the case which was essentially the ‘finished’ layout.
Front bezel of a Mac case with several laser-cut acrylic pieces installed to hold an LCD screen in place.
The front bezel gets interesting as it holds several components. The newest versions hold laser-cut acrylic pieces to helm frame and support the LCD display, the LCD itself (with adjustable widgets to help set the height) and the LCD driver board and control board.
A Macintosh Classic... but with a color LCD replacing the monitor showing the website Ars Technica.
It’s alive!
The mostly-complete system showing an error loading a web page.
Some errors and odd behavior remains.
Another Mac Shell with a power supply sitting on the bottom.
Early layout. I think this might have been on the original Mac SE I tried to convert but failed.
Testing the internal LCD display.
Front view of the internal display test.
A component made by gluing small pieces of acrylic together on a cutting matte.
In a perfect world I’d have buttons where buttons go, but trying to fit a CD-ROM drive or similar in the floppy slot seemed way too difficult. So I used it for controls for the built-in LCD, making a working control panel by using a thin strip of acrylic with stiffeners between buttons.
More testing mid-assembly.
Internal display testing.
A button soldered for this system.
Button testing!.
A button soldered for this system.
Soldering and shrink-wrapping.
Brett Dixon
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Brett Dixon
I need to write something.