11 Mar
2008
11 Mar
'08
3:24 p.m.
I'm looking for D-shell hole punches, for DB and DE shells, and
possibly DA as well - Greenlee is the name I know, but I daresay others
make them too. The major constraints: (a) the seller must ship to
Canada; (b) the seller must take phone or fax orders - I can tolerate
looking for things on the Web, but I will _not_ pay over the Web; (c)
they must be decent quality - no cheap knockoffs that break along about
the fifth time you use them (as Tony, I think, put it, I'm not rich
enough to buy cheap tools). There is no need to be especially fast to
use; if it takes a minute or two to position the pieces and crank a
bolt down with a wrench or something, that's OK.
Of course, I'd like them to be inexpensive too, but "inexpensive and
not cheap" is a combination I don't really expect to find. If I'm
asking for a pony, I'd also want the vendor to be in Montreal or
Ottawa, but that's, well, asking for a pony. :)
Any suggestions?
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11 Mar
11 Mar
4:10 p.m.
On Tue, 11 Mar 2008, der Mouse wrote:
I'm looking for D-shell hole punches, for DB and
DE shells, and
possibly DA as well - Greenlee is the name I know, but I daresay others
make them too. The major constraints: (a) the seller must ship to
Canada; (b) the seller must take phone or fax orders - I can tolerate
looking for things on the Web, but I will _not_ pay over the Web; (c)
they must be decent quality - no cheap knockoffs that break along about
the fifth time you use them (as Tony, I think, put it, I'm not rich
enough to buy cheap tools). There is no need to be especially fast to
use; if it takes a minute or two to position the pieces and crank a
bolt down with a wrench or something, that's OK.
Of course, I'd like them to be inexpensive too, but "inexpensive and
not cheap" is a combination I don't really expect to find. If I'm
asking for a pony, I'd also want the vendor to be in Montreal or
Ottawa, but that's, well, asking for a pony. :)
Any suggestions?
What's your budget? Mouser has Greenlee, but they're $230 or so apiece.
If you come across what you want on Ebay, I'll broker it for you.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
5:23 p.m.
I'm looking for D-shell hole punches, for DB and DE shells, and
possibly DA as well - Greenlee is the name I know, but I daresay others
make them too. The major constraints: (a) the seller must ship to
Canada; (b) the seller must take phone or fax orders - I can tolerate
looking for things on the Web, but I will _not_ pay over the Web; (c)
they must be decent quality - no cheap knockoffs that break along about
RS components (that's not Radio Shack) certainly used to sell them, and
probably stil ldo. However, unless you have a trade account, you _have_
to pay by credit card ontheir web site. But snce RS are one of the large
trade component suppliers in the UK, since they've been around for _many_
years, I have no qualms at all about doing that.
Be warned these punches are not cheap. I have the DB size one, and it
cost me over \pounds 100.00. On the other hand they work well, and I've
used it many times without problems.
the fifth time you use them (as Tony, I think, put it,
I'm not rich
enough to buy cheap tools). There is no need to be especially fast to
use; if it takes a minute or two to position the pieces and crank a
bolt down with a wrench or something, that's OK.
With the RS one, you first drill a hole in the middle of the place you
want to put the connector. Bolt down a template supplied with the punch
(the instructions suggest using the punch and its bolt for this, I found
it a lot better to provide a separate nut and bolt), then drill 2 holes
throug hthe template and panel (these will eventially be the mounting
holes for the connector). Remove the template, assemble the die to the
pnel (locating pins throuhg the holes you've just drilled), fit the punch
(olt through the hole you drilled first), fit the ball thrust bearing and
the nut. Tighten the nut, and you've made the hole.
It's not as fast as a punch tool in a press, of course, but it sure
beats filing it out by hand.
-tony
9:11 p.m.
I'm
looking for D-shell hole punches, [...]; (b) the seller must
take phone or fax orders - I can tolerate looking for things on the
Web, but I will _not_ pay over the Web; [...]
RS components (that's not Radio
Shack) certainly used to sell them,
and probably stil ldo. However, unless you have a trade account, you
_have_ to pay by credit card ontheir web site. But snce RS are one of the large trade component
suppliers in the UK,
since they've been around for _many_ years, I have no qualms at all
about doing that.
Distrust of the merchant is a comparatively small part of the reason I
refuse to pay "online". A larger part is that I have no SSL support;
an even larger part is that I know too much about the technology and
don't trust it. The CA chain is insanely weak and nobody publishes
their server key via anything even vaguely out-of-band. Web hosts are
routinely pwn3d, and there is comparatively little case law on who's
responsible for any resulting losses (I'm sure there is some by now,
but the technology is very new compared to phone orders; there simply
hasn't been time to accumulate enough case law to keep me happy). And
while I recognize that many vendors will simply have the phone clerk
type the card number into their webform, (a) if that goes wrong *they*,
not *I*, are at fault, if fault there is found to be, and (b) there is
an at least moderately good chance that the phone clerk does so on
their intranet rather than on their world-facing webserver, rendering
it at least somewhat more secure. (I suppose some of this comes down
to distrust, but it's distrust in the sense of my not trusting them to
use the technology right rather than my not trusting them to be
non-malicious.)
Perhaps it's another aspect of some of the personality traits that make
me a classiccmper - a liking for "too simple to break", a liking for
"been around long enough to be comparatively well known"....
Be warned these punches are not cheap. I have the DB
size one, and
it cost me over \pounds 100.00.
I'm not surprised. I would be suspicious of anything under $100, and I
expect to pay more like $200-$300. (If I go ahead and buy, that is.)
With the RS one, you [...]
I'd be slightly concerned about repeated drilling through the template
enlarging its holes slightly each time the drill bit brushes the side
of the template hole; I might make my own duplicate template....
It's not as fast as a punch tool in a press, of
course, but it sure
beats filing it out by hand.
Or even dremelling it...I just did that (dremel, with file touchup),
and it makes me tend towards the position that, even if it makes no
_economic_ sense for someone who wouldn't use it every day to buy a
multi-hundred-dollar punch, the hassle it'll save me, over all the
holes I make with it in the future, makes it worth it.
Incidentally, is anyone familiar with a treatment for aluminum that
renders the surface nonconductive? The housing I made this hole in is
made of aluminum - but I got a surprise when I was working with it and
checked resistance to the housing and got infinity (which means more
than about 40 megohms, for that meter). For a while I thought it might
be plastic, but it dremels like aluminum, and it turns out that if I
stick the ohmmeter leads on the cut surfaces it conducts fine - the
insulation must be a surface treatment of some sort, and, indeed, I
note that where I hit the surface accidentally while dremelling, it
looks visibly different (lighter and shinier). It doesn't seem to peel
like a plastic film (doesn't feel like it, either), though it did smell
a bit like a plastic while I was dremelling it.
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12 Mar
12 Mar
3:59 a.m.
On 12/03/2008 01:11, der Mouse wrote:
Someone else will get my business, then; they've
just opted themselves
completely out of consideration for me.
You could try Newark (www.newark.com). They're part of the Farnell
group (www.farnell.com). Farnell sell Greenlee and a couple of other
good makes (search for "connector punch"), but in North America they
sell through Newark. Newark tends to be a bit expensive, but they will
take phone orders and do ship to Canada.
> Be warned these punches are not cheap. I have the
DB size one, and
> it cost me over \pounds 100.00.
About double that now.
I'm not surprised. I would be suspicious of
anything under $100, and I
expect to pay more like $200-$300. (If I go ahead and buy, that is.)
I'd be slightly concerned about repeated drilling
through the template
enlarging its holes slightly each time the drill bit brushes the side
of the template hole; I might make my own duplicate template....
You can buy spare templates for a few $$ each.
Incidentally, is anyone familiar with a treatment for
aluminum that
renders the surface nonconductive? The housing I made this hole in is
made of aluminum - but I got a surprise when I was working with it and
checked resistance to the housing and got infinity (which means more
than about 40 megohms, for that meter).
Anodizing will do that. Aluminium oxide (alumina) is a good insulator.
The oxide will form naturally on the surface, but anodizing gives a
more even layer and is a common treatment.
--
Pete Peter Turnbull
Network Manager
University of York
6:01 a.m.
New subject: [personal] Re: D-shell hole punches?
----- Original Message -----
From: "Tony Duell" <ard at p850ug1.demon.co.uk>
To: <cctalk at classiccmp.org>
Sent: Tuesday, March 11, 2008 9:23 PM
Subject: [personal] Re: D-shell hole punches?
The RS Website gives http://www.alliedelec.com/ as their rep for Canada.
They (RS) still sell D hole punches in several forms including an hydraulic
hand tool.
The panel mount D shells do not have to be fitted to a D shaped hole.
As a manufacturer of many styles of panels with D connectors we never fit
them into D shaped holes.
If you have only a couple of holes to do, rectangular is much easier to cut
and file, we have cutout drawings if you want them.
I'm
looking for D-shell hole punches, for DB and DE shells, and
possibly DA as well - Greenlee is the name I know, but I daresay others
make them too. The major constraints: (a) the seller must ship to
Canada; (b) the seller must take phone or fax orders - I can tolerate
looking for things on the Web, but I will _not_ pay over the Web; (c)
they must be decent quality - no cheap knockoffs that break along about
11 Mar
11 Mar
7:13 p.m.
--- der Mouse <mouse at rodents.montreal.qc.ca> wrote:
I'm looking for D-shell hole punches, for DB and
DE
shells, and
possibly DA as well - Greenlee is the name I know,
but I daresay others
make them too.
You mean they actually made a _tool_ for that? I
always used a 1/4" drill bit and one of those Radio
Shack nibbler tools. <grin>
-Ian
12 Mar
12 Mar
7:11 p.m.
You mean they actually made a _tool_ for that? I
Oh yes. And for many other non-circular components (IEC mains connectors,
rocker switches, etc). The only problems are (a) the price and (b) they
don't work on thick metal panels (or most plastics).
always used a 1/4" drill bit and one of those
Radio
Shack nibbler tools. <grin>
Given 'normal' tools, I found the easiest way was to use a drill bit the
same diameter as the width of the D-connector (it's not that large).
Drile a line of holes along the centre line of the connector position,
then cut between them and file to shape.
I've been known to use a 118" slot drill in a milling machine [1] to cut
rectangular holes in diecast boxes... Takes time, but it makes a lovely
job of it.
[1] Actually a small lathe with a vertical slide.
-tony
5950
days inactive
5951
days old
7 comments
6 participants
participants (6)
-
ard＠p850ug1.demon.co.uk -
dgriffi＠cs.csubak.edu -
ian_primus＠yahoo.com -
mike＠brickfieldspark.org -
mouse＠Rodents.Montreal.QC.CA -
pete＠dunnington.plus.com