>"Jim Thompson" <To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote in >message news:stmoe5prvg2m1hn35ds7qmpj1f8bbtg1ll@4ax.com... >> On Sat, 31 Oct 2009 07:39:26 -0500, John Fields >> <jfie...@austininstruments.com> wrote:
>>>On Sat, 31 Oct 2009 12:29:20 +0530, "pimpom" <pim...@invalid.com> >>>wrote:
>>>>I'm having a hard time finding knockout punches for making 1/2 - >>>>1" (say ~12 to 25mm) holes in sheet metal . The smallest size by >>>>Greenlee is for 1/2-inch conduits with an actual hole diameter of >>>>22.4 mm, and all other sizes are much too big.
>>>>I'm in India where importing anything involves too much hassle, >>>>especially from a remote part of the country. I have a friend in >>>>the US who's coming for a visit in a few weeks and I want to ask >>>>him to bring the punches for me.
>>>>Someone in another newsgroup pointed out Q.Max punches and they >>>>have the size range I need, but they seem to be sold only in the >>>>UK. I have not been able to find out the identity of the >>>>manufacturers. So, could you please answer these questions -
>>>>1. Who makes Q.Max punches? >>>>2. What kind of hassle and customs duty are involved in ordering >>>>such items from the UK to the US? >>>>3. Are there any sources in the US for the sizes I need? They >>>>don't even have to be quite up to Greenlee standard as the >>>>material I work with is mostly 1-2 mm aluminium, with an >>>>occasional 1mm mild steel. >>>>4. Any other suggestions will be appreciated. >>>--- >>>Greenlee makes what you need; they call them 'standard round knockout >>>punches' and you can see them on page 53 of their catalog:
>>>They have lots of distributors here in the US (WW Grainger comes to >>>mind) so your friend should have no trouble finding them.
>>>You may also want to try a step-bit drill; they're pretty handy and >>>less >>>expensive than an array of punches.
>>>JF
>> "Slug-Splitter", eh? That sure would have been nice in my days of >> punching holes for toob sockets ;-)
>> ...Jim Thompson
>Their also almost twice the price of a standard knockout.
>Cheers
The Greenlee products i used worked better, and lasted many times longer than the competitors. Less labor time and lower capital long term tool costs, try that idea. That is why Greenlee is still in business.
"JosephKK"<quiettechb...@yahoo.com> wrote: >On Sat, 31 Oct 2009 14:19:44 -0700, Jim Thompson ><To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote:
>>On Sat, 31 Oct 2009 17:05:17 -0400, "Michael A. Terrell" >><mike.terr...@earthlink.net> wrote:
>>>Jim Thompson wrote:
>>>> "Slug-Splitter", eh? That sure would have been nice in my days of >>>> punching holes for toob sockets ;-)
>>> In your day, a chassis was chiseled out of stone! ;-)
>>Naaah! They really were _breadboards_ ;-)
>> ...Jim Thompson
>And the enclosures were breadboxes. 8:-))
Not much of a stretch. In my youth, chasses were hard to come by, and expensive. You young guys have probably never seen them, but I built many a circuit in tobacco or candy tins.
...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 |
Obama says, "I AM NOT a cry baby, Fox REALLY IS out to get me!"
>Jim Thompson wrote: >> On Sun, 1 Nov 2009 17:19:35 +0530, "pimpom" >> <pim...@invalid.com> >> wrote:
>>> He was a New Zealander who'd received his Ph.D in the US and >>> was >>> more at home with solid-state devices than with tubes. I was >>> 19, >>> entirely self-taught from the likes of Radiotron Designers's >>> Handbook
>> Mine is 4th Edition, 1953 ;-)
>Same here. I got my own copy in the late 70s through a friend in >the US. It says that it's the 4th edition, 1952 - reproduced >under direction of RCA in April 1953. I had it rebound later and >it's still in very good shape. Still comes in useful for some >things.
How well does it cover the then newest microwave devices like BWOs and TWTs?
<To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote: >Not much of a stretch. In my youth, chasses were hard to come by, and >expensive. You young guys have probably never seen them, but I built >many a circuit in tobacco or candy tins.
On Sun, 1 Nov 2009 00:07:34 +0530, "pimpom" <pim...@invalid.com> wrote:
>ChrisQ wrote: >> pimpom wrote:
<snip> >Now that you've brought up their name, I looked at their prices >for Q-Max punches and they are much more reasonable. Roughly 50% >more than in the UK, but I guess that's to be expected. I may not >have to impose on my friend in the US after all.
>(Strange though that even when I selected the US, prices are >still given in UKP. Prices for India are given in Indian rupee).
That is straight forward enough, localization can easily be provided by decoding your IP address or what it resolves to with ARP and RARP.
Archimedes' Lever wrote: > On Sat, 07 Nov 2009 08:10:12 -0700, Jim Thompson > <To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote:
>> Not much of a stretch. In my youth, chasses were hard to come by, and >> expensive. You young guys have probably never seen them, but I built >> many a circuit in tobacco or candy tins.
>Archimedes' Lever wrote: >> On Sat, 07 Nov 2009 08:10:12 -0700, Jim Thompson >> <To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote:
>>> Not much of a stretch. In my youth, chasses were hard to come by, and >>> expensive. You young guys have probably never seen them, but I built >>> many a circuit in tobacco or candy tins.
Archimedes' Lever wrote: > On Sun, 08 Nov 2009 13:33:01 +0000, Ian Bell <ruffreco...@yahoo.com> > wrote:
>> Archimedes' Lever wrote: >>> On Sat, 07 Nov 2009 08:10:12 -0700, Jim Thompson >>> <To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote:
>>>> Not much of a stretch. In my youth, chasses were hard to come by, and >>>> expensive. You young guys have probably never seen them, but I built >>>> many a circuit in tobacco or candy tins.
>Archimedes' Lever wrote: >> On Sun, 08 Nov 2009 13:33:01 +0000, Ian Bell <ruffreco...@yahoo.com> >> wrote:
>>> Archimedes' Lever wrote: >>>> On Sat, 07 Nov 2009 08:10:12 -0700, Jim Thompson >>>> <To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote:
>>>>> Not much of a stretch. In my youth, chasses were hard to come by, and >>>>> expensive. You young guys have probably never seen them, but I built >>>>> many a circuit in tobacco or candy tins.
> Their LED flashlights are crap. Crap squared. No, make that crap > cubed. I got one of those two packs for $4. Both seemed to flicker, > and it was not related to the pressure on the battery terminals. > Anyway, I've got another source for good cheap LED flashlights.
The red & blue ones? The threads oxidize. Clean them up and put a drop of light oil on them, like any other flashlight and they work fine. I have two sets of them that I have used for over a year now. I bought some with clear anodize for $1 each at a flea market that work well, too. I have them scattered all over the place so I don't have far to go when i need to look inside something. :)
> On Mon, 02 Nov 2009 14:01:39 -0500, "Michael A. Terrell" > <mike.terr...@earthlink.net> wrote:
> >ChrisQ wrote:
> >> Michael A. Terrell wrote:
> >> > That is one of the cheaper models. That is the same price as each of > >> > the drills I bought, without the toy light or molded case. The absolute > >> > worst cordless drills I've seen was my first one, a yellow plastic piece > >> > of crap from Rockwell, and some 'Coleman Powermate' drills that were > >> > given to me. They were store returns, and I've wonder if they were > >> > actually returned, or thrown through the store windows. One had a > >> > broken output shaft from the gearbox. The other had some wires that were > >> > never connected. I 'fixed' that one and have seven batteries, but but > >> > it makes anything else look good.
> >> I know we would all like to buy kit made locally, but the very best > >> power tools you can buy, imho, are Makita. I have bought both new and > >> s/hand from machinery auctions and boot sales. The secondhand ones > >> always get stripped, cleaned and relubed before use and you should see > >> the internals. Invariably ball or roller bearings on all shafts and > >> generously proportioned motors, which never seem to have any wear on the > >> commutators, irrespective of age. You can look at it with an engineers > >> critical eye and find little to find fault with. Some of the Bosch kit > >> is not bad as well and even some of the Black & Decker stuff, so long as > >> it's been made at the Scintilla subsiduary in Switzerland, but much of > >> the B&D stuff is rubbish.
> >> It's the old story - buy cheap, buy twice :-)...
> > I still have a B&D drill I bought in 1970. I have four or five of > >them, all from the 60s though the early '80s that have seen a lot of > >rough service I wore out one chuck, and several power cords. All US > >made.
> > I thought that Makita is chinese made these days? Or is it Ryobi?
> Makita is a Japanese company, but of course they make tools in China.
> Ryobi is a bit more of a story.. they used to be Japanese, but they > now are owned by a company called TTI, which makes such brand-name > "stuff" as Homelite, Milwaukee, Rigid (for Home Depot) etc... all in > South China. Founded by a European and a Chinese fellow about 25 years > ago.
> On Fri, 06 Nov 2009 22:57:09 -0800, > "JosephKK"<quiettechb...@yahoo.com> wrote:
> >On Sat, 31 Oct 2009 14:19:44 -0700, Jim Thompson > ><To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote:
> >>On Sat, 31 Oct 2009 17:05:17 -0400, "Michael A. Terrell" > >><mike.terr...@earthlink.net> wrote:
> >>>Jim Thompson wrote:
> >>>> "Slug-Splitter", eh? That sure would have been nice in my days of > >>>> punching holes for toob sockets ;-)
> >>> In your day, a chassis was chiseled out of stone! ;-)
> >>Naaah! They really were _breadboards_ ;-)
> >> ...Jim Thompson
> >And the enclosures were breadboxes. 8:-))
> Not much of a stretch. In my youth, chasses were hard to come by, and > expensive. You young guys have probably never seen them, but I built > many a circuit in tobacco or candy tins.
I made some wood cabinets out of wood I salvaged from grape crates.
>> On Fri, 06 Nov 2009 22:57:09 -0800, >> "JosephKK"<quiettechb...@yahoo.com> wrote:
>> >On Sat, 31 Oct 2009 14:19:44 -0700, Jim Thompson >> ><To-Email-Use-The-Envelope-I...@My-Web-Site.com> wrote:
>> >>On Sat, 31 Oct 2009 17:05:17 -0400, "Michael A. Terrell" >> >><mike.terr...@earthlink.net> wrote:
>> >>>Jim Thompson wrote:
>> >>>> "Slug-Splitter", eh? That sure would have been nice in my days of >> >>>> punching holes for toob sockets ;-)
>> >>> In your day, a chassis was chiseled out of stone! ;-)
>> >>Naaah! They really were _breadboards_ ;-)
>> >> ...Jim Thompson
>> >And the enclosures were breadboxes. 8:-))
>> Not much of a stretch. In my youth, chasses were hard to come by, and >> expensive. You young guys have probably never seen them, but I built >> many a circuit in tobacco or candy tins.
> I made some wood cabinets out of wood I salvaged from grape crates.
Yep, kids these days are depraved on account of how they are deprived (of having to learn some of the many ways of how to make do with what is available, to get what is wanted).
> > I made some wood cabinets out of wood I salvaged from grape crates.
> Yep, kids these days are depraved on account of how they are deprived > (of having to learn some of the many ways of how to make do with what > is available, to get what is wanted).
Someone gave me a tube AM/FM Panasonic radio in a plastic cabinet that was cracking from the heat, when I was about 13. I dismantled it, and carefully sawed the front off the damaged cabinet. Then I built a wood cabinet that held the salvaged faceplate. My family had just used some of that dark green 'antiquing' finish on an unfinished dry sink kit so I used what was left on the cabinet. I used a scrap of pegboard to make a back and ended up with a working clock radio for my bedroom. A few weeks later my mother was bragging about it to one of her friends, who decided that she wanted to buy it. I didn't want to sell it, and the $40 wasn't worth the time I spent building a custom radio but I ended up letting her take it.
