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  1. rplacd

    Reverse Engineering the Macintosh Classic PCB for 1:1 reproduction

    Kai – glad you're taking this on! If you ever want another badly Maxell bombed Classic LB, I'd be happy to send you one via first class parcel, on my tab.
  2. rplacd

    New CPU Accelerator options for 68K Macs?

    I'd be interested in financially supporting a project but not because I intend to ever use one – I just think that the community would gain a lot from learning how to design and assemble an accelerator. Hell, if said person creates really good work logs, I'd love to learn something from the...
  3. rplacd

    Tunnel Vision On Monochrome Active Matrix Powerbooks

    I'm not too optimistic about using silica bags. I tried storing a PB180 screen with about 2 pounds' worth of calcium chloride dessicant pellets; after a month, the screen tunnels at the same rate.
  4. rplacd

    Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

    Same! This thread has inspired me to take a good crack at learning digital design. As an early Christmas gift I bought myself an FPGA trainer board and a textbook.
  5. rplacd

    SE/30 Restoration Fun

    Been there, done that :( Every collector's bound to do it at some point, sadly. I'm still keeping my busted CRT around, though – one day I'll find someone with an angle grinder to cut off the neck, so I can stick an LCD screen behind it.
  6. rplacd

    Not exactly a Mac, but I picked up a distant cousin: an HP PA-RISC 712/100 workstation!

    There's a slight historical irony here: IIRC, Dan Dobberpuhl, who led the Alpha design team and then the StrongARM team, eventually ended up founding PA Semi, which was in turn acquired by Apple – and the rest is history.
  7. rplacd

    3D-Printed Objects

    Update: oh god they have a screw pitch checker!!!!! Finally I can figure out which standoffs to get for my PowerBook...
  8. rplacd

    3D-Printed Objects

    Same! Instead of exhaustively measuring things, was just thinking of separately copying curved parts onto engineering paper, scaling it to the correct size, and compositing multiple images like that in Photoshop to get front views and profiles. (I don't have a scanner, so I sure hope that my...
  9. rplacd

    3D-Printed Objects

    I think I found the little mini curve duplicator tool you're looking for! A company named MicroMark makes small version of trades tools... https://www.micromark.com/6-Contour-Gauge
  10. rplacd

    PowerBook 1xx Wireless Modem

    Mazel tov! Thanks for keeping on posting your progress, sutekh – I want to do a hardware project this winter, and this thread is good inspiration.
  11. rplacd

    Tunnel Vision On Monochrome Active Matrix Powerbooks

    Ooh, that's a good idea! Maybe cover the whole thing in calcium chloride, like mummifying a corpse. Same process eh?
  12. rplacd

    Tunnel Vision On Monochrome Active Matrix Powerbooks

    Hmm, I'm thinking about alternatives as well: I live in a really humid climate, and I'm wary of using an oven. I wonder if simply putting the screen in an airtight container with a really good desiccant, like a molecular sieve, could work, leaving in the screen as long as possible, repeating as...
  13. rplacd

    PowerBook 180c, a very aggressive mold

    Thanks for the video, I have another PB180 coming along its merry way, in unknown condition... Would you be able to use a microfiber cloth, wet it with IPA/xylol/Goof-Off, and apply pressure onto the LCD screen to remove the adhesive traces? Other than that, I can really only think of soaking...
  14. rplacd

    3D-Printed Objects

    Forgive me if this is a simple question, but how do y'all measure the radius of curved edges/fillets for reproduction? I'm trying to figure out how feasible it would be for me to make a repro version of a PowerBook 1xx screen rear case, and with a good set of calipers seems like the toughest...
  15. rplacd

    Compatible PB180 case lid parts?

    Thanks for the tips, everyone. Gave the 3D printed insert a try – I did screw up, though, since now the inserts are rotating loose inside the case lid, even after JB Welding them down  :( Anyone know any good way to fix in a screw insert in some ABS?
  16. rplacd

    Mac OS 8 on a Classic II

    This is beautiful! Now if only there was a way of turning off Platinum...
  17. rplacd

    Compatible PB180 case lid parts?

    All – after coughing on my PowerBook 180, the dreaded hinge failure seems to have happened. I'd like to replace the lid of the PB180 (i.e. the top case which the screen hinges screw onto.) Would y'all happen to know whether other PowerBook models have compatible parts, and if so which? PowerBook...
  18. rplacd

    Macintosh Classic RAM not working

    Two things come to mind – first, what error messages do you get? A Sad Mac screen will have an error code that might tell us something. Second, I notice the shunt on the expansion card is on "SIMM NOT INSTALLED" – what happens when you move it to "SIMM INSTALLED", with the extra RAM in, and try...
  19. rplacd

    Very neat potential solution for our 30-pin Macs and wanting ALL THE MEMORY

    As someone who's learning, too, how did you remove the '020? I imagine you'd use hot air + lots of flux, but I'd be extremely worried about putting too much thermal stress on '020, I'd expect it to be the most fragile component.
  20. rplacd

    Modern DIN-8-to-USB adapters?

    All – any good recommendations for a DIN-8 to USB serial adapter that I can use to connect an eMate, or a Mac printer port to a modern Mac? I used to use a Keyspan 8-pin serial to USB adapter every time I needed to connect one of my old Macs to my rMBP. Unfortunately, I updated to Catalina, and...
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