15 Jun
2015
15 Jun
'15
9:11 a.m.
From: Pontus Pihlgren
> Seeing the one with the one with the missing
toggle switches reminds
> me that I have an enquiry out re getting some made.
I believe many would appreciate that.
We probably ought to standardize our terminology to be slightly less
confusing. As we've determined, the actual switch is a slide switch, not a
toggle. I'm not sure what the official DEC name is for the plastic lever which
actuates the slide switch - anyone know?
Noel
PS: If a way is developed to make the plastic levers, the 11/20 uses the
exact same part, just in PDP-11 colours.
15 Jun
15 Jun
9:17 a.m.
On Jun 15, 2015 9:11 AM, "Noel Chiappa" <jnc at mercury.lcs.mit.edu>
wrote:
I'm not sure what the official DEC name is for the plastic lever which
actuates the slide switch - anyone know?
I hear them referred to as handles.
PS: If a way is developed to make the plastic levers, the 11/20 uses the
exact same part, just in PDP-11 colours.
They've been 3D printed with the sintered nylon process, dyed and polished
with good results thanks to the efforts of Vince Slyngstad. I'm not sure if
Vince also did the model of it or had some help, but I'm quite satisfied
with mine mechanically speaking, though the yellow is a little light for my
8/E. Maybe some of the 11/20 colors would turn out better.
Kyle
10 a.m.
From: Kyle Owen: Monday, June 15, 2015 6:17 AM
I tried spraying a white Nova 3 handle that I had printed with the same
process with Krylon Fusion yellow. That gave a slightly less "bright"
yellow with a good satin finish, and the handle hasn't melted down
into a smelly mess, as I gather can happen with some paints. (And
is also why I did this with the Nova 3 prototype handle that didn't
fit well anyway.)
It was actually even quicker and easier than sealing the yellow or
orange porous sintered nylon with urethane floor polish.
PS: If a way
is developed to make the plastic levers, the 11/20 uses the
exact same part, just in PDP-11 colours.
They've been 3D printed with the sintered nylon process, dyed and polished
with good results thanks to the efforts of Vince Slyngstad. I'm not sure if
Vince also did the model of it or had some help, but I'm quite satisfied
with mine mechanically speaking, though the yellow is a little light for my
8/E. Maybe some of the 11/20 colors would turn out better.
I don't like the Shapeways dye colors for the -11 colors, though
I suppose if you did the whole panel it would look OK.
(The "pink" is sort of the right magenta, but much too bright.)
I'd probably just print them in white (slightly cheaper too),
then look for a suitable spray paint. Since the surface is so
porous, I don't think there'll be the problems with the
paint failing to bond that a non-porous plastic would have.
Designs can be found here:
http://www.so-much-stuff.com/pdp8/cad/3d.php
though the commentary is slightly out of date, as usual.
Vince
10:31 a.m.
I can tell you what they were called internally at DEC.
Mainly due to the fact I was there at the time.
They were called Toggles or Toggle switches and their use was called
'Toggling' hence 'To toggle in the bootstrap'
Any DEC field engineer of that time knew by heart the sequence of octal
numbers you entered to bring the system up.
Rod Smallwood
On 15/06/2015 14:11, Noel Chiappa wrote:
From: Pontus
Pihlgren
> Seeing the one with the one with the missing
toggle switches reminds
> me that I have an enquiry out re getting some made.
I believe many would appreciate that.
We probably ought to standardize our terminology to be slightly less
confusing. As we've determined, the actual switch is a slide switch, not a
toggle. I'm not sure what the official DEC name is for the plastic lever which
actuates the slide switch - anyone know?
Noel
PS: If a way is developed to make the plastic levers, the 11/20 uses the
exact same part, just in PDP-11 colours.
3326
days inactive
3326
days old
3 comments
4 participants
participants (4)
-
jnc＠mercury.lcs.mit.edu -
kylevowen＠gmail.com -
rodsmallwood52＠btinternet.com -
v.slyngstad＠frontier.com