From: Charles Dickman: Tuesday, July 28, 2015 9:03 AM
> If the posts and balls are metal, the panel sockets are going to crack
> because there will not be any give in the shaft. If the ball and shaft
> is replaced with a solid pin, the panel sockets will get damaged
> because the socket will have t
I have a crufty old version of DesignSpark PCB. I'll have a look at
Mechanical.
It's basically SpaceClaim that's been tweaked to only output it's native
file format and STL files.
You should also do your design work in metric if you expect to be having
parts printed. Scaling isn't a practi
From: Pete Turnbull: Wednesday, July 29, 2015 7:05 AM
One concern that I had was that the new design might end up trying to
ovalize the (brittle) socket in the mating panel, since the new posts
are only really compressible in one axis.
I doubt that matters much either, because it's the posts th
From: geneb: Wednesday, July 29, 2015 7:16 AM
On Wed, 29 Jul 2015, Vincent Slyngstad wrote:
Are you referring to the junction of the post and the block? That would be
easy enough to do (though tedious in SketchUp).
...which is why SketchUp shouldn't be used for CAD work. If you're using
Win
On Wed, 29 Jul 2015, Vincent Slyngstad wrote:
From: Pete Turnbull: Wednesday, July 29, 2015 2:57 AM
On 29/07/2015 07:24, Vincent Slyngstad wrote:
I've placed a new design at:
http://svn.so-much-stuff.com/svn/trunk/3D/rack-bracket/bracket-new.jpg
That looks pretty good to me, and the only ref
On 29/07/2015 14:11, Vincent Slyngstad wrote:
From: Pete Turnbull: Wednesday, July 29, 2015 2:57 AM
Firstly, to add a small fillet to the junction of post and flat
Are you referring to the junction of the post and the block? That would
be easy enough to do (though tedious in SketchUp).
Ye
From: Pete Turnbull: Wednesday, July 29, 2015 2:57 AM
On 29/07/2015 07:24, Vincent Slyngstad wrote:
I've placed a new design at:
http://svn.so-much-stuff.com/svn/trunk/3D/rack-bracket/bracket-new.jpg
That looks pretty good to me, and the only refinements I'd suggest are
these:
Firstly, to a
On 29/07/2015 07:24, Vincent Slyngstad wrote:
I've placed a new design at:
http://svn.so-much-stuff.com/svn/trunk/3D/rack-bracket/bracket-new.jpg
I don't know if the design will work -- will the slit will provide
enough flexibility, will the post crack, etc.
That looks pretty good to me, an
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of quapla
> Sent: 29 July 2015 10:29
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: H960 blank panel clips
>
> On 2015-07-29 08:24, Vincent Slyngst
On 2015-07-29 08:24, Vincent Slyngstad wrote:
From: Pete Turnbull: Tuesday, July 28, 2015 10:58 AM
On 28/07/2015 18:22, Vincent Slyngstad wrote:
What do folks think of the idea of thickening the shaft, terminating
it
in a hemisphere, but then cutting half-way down the result with a Y
or X
shap
From: Pete Turnbull: Tuesday, July 28, 2015 10:58 AM
On 28/07/2015 18:22, Vincent Slyngstad wrote:
What do folks think of the idea of thickening the shaft, terminating it
in a hemisphere, but then cutting half-way down the result with a Y or X
shaped cut? The cut would hopefully allow the resul
-- Original Message ------------
Subject: Re: H960 blank panel clips
From: "Chuck Guzis"
Date: Wed, July 29, 2015 7:30 am
To: gene...@classiccmp.org
"On-Topic and Off-Topic Posts"
--
t works.
Steve.
Original Message --------
Subject: Re: H960 blank panel clips
From:"Chuck Guzis"
Date:Wed, July 29, 2015 7:30 am
To: gene...@classiccmp.org
&quo
> There are several kinds. ... I'll look and see if I have any of those,
> to take a photo of.
Alas, I don't.
I do have some of the third kind (which are intermediate between those two
previously discussed; they have the holes for bolting to the rack, but don't
have the captive nuts).
On 07/28/2015 01:01 PM, Noel Chiappa wrote:
> From: Chuck Guzis
> Does anyone have a photo or mechanical drawing of one of these things?
There are several kinds. These:
http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
The balls remind me of rod-end linkage s
On Tue, 28 Jul 2015, William Donzelli wrote:
There are several kinds. These:
http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
You know...that wouldn't be terribly difficult to print. The heat-set
inserts are easily obtainable too. (that little metal threaded bit)
Any
> There are several kinds. These:
>
> http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
I THINK YOU FORGOT SOMETHING...
--
toober
> From: Chuck Guzis
> Does anyone have a photo or mechanical drawing of one of these things?
There are several kinds. These:
http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/H960FrontPanelClips.jpg
are some of the better ones; they are connected to the rack via countersunk
screws (go in
Does anyone have a photo or mechanical drawing of one of these things?
You've got me curious now.
--Chuck
On 7/28/15 10:22 AM, Vincent Slyngstad wrote:
What do folks think of the idea of thickening the shaft, terminating it in a
hemisphere, but then cutting half-way down the result with a Y or X shaped cut?
The cut would hopefully allow the result
to flex and taper into the socket,
providing plen
On 28/07/2015 18:22, Vincent Slyngstad wrote:
What do folks think of the idea of thickening the shaft, terminating it
in a hemisphere, but then cutting half-way down the result with a Y or X
shaped cut? The cut would hopefully allow the result to flex and taper
into the socket,
providing plenty
From: Charles Dickman: Tuesday, July 28, 2015 9:03 AM
If the posts and balls are metal, the panel sockets are going to crack
because there will not be any give in the shaft. If the ball and shaft
is replaced with a solid pin, the panel sockets will get damaged
because the socket will have to flex
On 28/07/2015 17:52, Tothwolf wrote:
If they are made of ABS and the ball isn't critical, why not mill or
drill out a small bit of the broken stem and solvent weld in some round
ABS stock to make a new stem? Methylene chloride (dichloromethane) works
extremely well for ABS (methyl ethyl ketone i
On Tue, 28 Jul 2015, Pete Turnbull wrote:
On 27/07/2015 23:13, Tothwolf wrote:
On Mon, 27 Jul 2015, John Wilson wrote:
The only thing here is, it's a *terrible* design. Those damn nubs
snap off so easily (I'm sure decades of outgassing haven't helped),
even when you're expecting it and being
From: quapla: Tuesday, July 28, 2015 2:22 AM
@Vince
Can you make a '.stp' or '.igs' file of the bracket as shown
in the image 'bracket-screws.jpg' but with straight poles rather
than the 'ball on a stick' version?
I could widen the post to 1/4", so the result would be a post
with a hemispheric
On Tue, Jul 28, 2015 at 11:29 AM, Pete Turnbull
wrote:
>
> No, they're ABS - at least mine are, I just tested a few. I don't know what
> grade, though, and perhaps something more flexible and forgiving - a
> different grade of ABS, semi-rigid PVC, or nylon would be better.
>
> My suggestion, howe
On 28/07/2015 06:10, Arno Kletzander wrote:
metal ball heads with a hex base on threaded posts are available as spares
for R/C cars and similar
Those are ball joints for servo arms, we use them on helicopters too.
But ones I've seen are too small, and I don't think you'd get any with
long en
On 27/07/2015 23:13, Tothwolf wrote:
On Mon, 27 Jul 2015, John Wilson wrote:
The only thing here is, it's a *terrible* design. Those damn nubs
snap off so easily (I'm sure decades of outgassing haven't helped),
even when you're expecting it and being super careful.
Yes, even in the late 70s i
On 2015-07-27 18:51, Vincent Slyngstad wrote:
From: Noel Chiappa: Monday, July 27, 2015 8:58 AM
Time to find someone who can do injection molding... (I don't think
these
could be 3D printed, the necks of the bulb-heads are under a lot of
stress
when removing panels, they often snap off; will 3D
On Tue, Jul 28, 2015 at 07:10:51AM +0200, Arno Kletzander wrote:
>metal ball heads with a hex base on threaded posts are available as spares
>for R/C cars and similar, see e.g. ebay auction 161768309137 (10 for less than
>EUR 4,-- + S/H). You could probably just screw them into a suitably-sized hol
On Mon, Jul 27, 2015 at 11:58:36AM -0400, Noel Chiappa wrote:
>Saw this auction for a pair of H960 blank front panel clips:
>
> http://www.ebay.com/itm/391207099375
>
>and though I'd pick them up... until they went for $30 (including shipping),at
>which point I decided I'd go back to my previous p
On Mon, 27 Jul 2015, John Wilson wrote:
On Mon, Jul 27, 2015 at 11:58:36AM -0400, Noel Chiappa wrote:
Saw this auction for a pair of H960 blank front panel clips:
http://www.ebay.com/itm/391207099375
and though I'd pick them up... until they went for $30 (including
shipping),at which point
On 7/27/15 9:14 AM, quapla wrote:
Maybe a future possibility to have a (maybe Chinese) manufacturer make
a batch of 1000, 2000 or maybe 1 clips with a type of plastic which
is slightly more flexible so that they do not break off to quickly?
The current design is flawed. It should be fixed
On Mon, Jul 27, 2015 at 11:58:36AM -0400, Noel Chiappa wrote:
>Saw this auction for a pair of H960 blank front panel clips:
>
> http://www.ebay.com/itm/391207099375
>
>and though I'd pick them up... until they went for $30 (including shipping),at
>which point I decided I'd go back to my previous p
From: Noel Chiappa: Monday, July 27, 2015 8:58 AM
Time to find someone who can do injection molding... (I don't think these
could be 3D printed, the necks of the bulb-heads are under a lot of stress
when removing panels, they often snap off; will 3D printed parts be that
strong?)
They are actua
Maybe a future possibility to have a (maybe Chinese) manufacturer make a
batch of 1000, 2000 or maybe 1 clips with a type of plastic which is
slightly more flexible so that they do not break off to quickly?
I have no idea what current prices would be for this field of manufacturing
bu
On 2015-07-27 17:58, j...@mercury.lcs.mit.edu wrote:
Saw this auction for a pair of H960 blank front panel clips:
http://www.ebay.com/itm/391207099375
and though I'd pick them up... until they went for $30 (including
shipping),at
which point I decided I'd go back to my previous plan to fabri
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