> On Sep 16, 2017, at 4:10 PM, Paul Koning via cctalk <[email protected]>
> wrote:
>
>
>> On Sep 16, 2017, at 9:52 AM, Noel Chiappa via cctalk <[email protected]>
>> wrote:
>>
>>> does anyone have any spare "pivot bushings" for the DEC H9xx series
>>> cabinets (H950, H960, etc)? (These are the short pieces with a conical
>>> top which fit over the hinge pins, at the bottom.)
>>> ...
>>> I could also use some more of the pins (particularly the kind with the
>>> hole drilled through them to take a roll pin)
>>
>> Someone asked for an image of these; here:
>>
>> http://ana-3.lcs.mit.edu/~jnc/tech/jpg/H9xxPinBushing.jpg
>>
>> is one. The pin in the picture is the kind without the hole at one end, but
>> they are otherwise identical. (Ignore the retaining ring on the pin; those
>> are easy to get, my local hardware store has them.)
>
> If you have a lathe, this looks like a very nice beginner's project. Start
> with a rod of the right diameter; a simple way to get such a rod is to buy a
> long bolt, because those are mostly not threaded. Failing that, get a length
> of "drill rod" from a metal supply outlet. Then all you need is to grind a
> tool bit (high speed steel) to form a narrow screwdriver-like tip to cut
> those grooves. Hold the rod in the lathe, cut the grooves in the right
> spots, cut the thing to length, done.
Ok, I read that wrong. You were talking about the short thing. Still, that's
an easy project. Same idea. Start with a rod, grip in the chuck, drill, cut
bevel, cut the two diameters, then cut to length. Elementary lathe operation
books are easy to find; the South Bend Lathe manual that used to be reprinted
by Lindsay Publications is very good. It's probably still available even
though Lindsay unfortunately retired some years ago.
paul
