Sheet metal knockout punches

It was simply me stating that my mistake was an easy one to make.

God damn... f*ck off already.

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

I've used the standard Greenlee's for 090 alum. The donuts arent that hard to popout. I can see their use on a steel box tho.

Cheers

In your day, a chassis was chiseled out of stone! ;-)

--
The movie \'Deliverance\' isn\'t a documentary!

Naaah! They really were _breadboards_ ;-) ...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

| 1962 | On Halloween, Frighten a Congressman Costume Yourself as a Voting Machine

With the optional bread mold...

--
The movie \'Deliverance\' isn\'t a documentary!

Come on, that was before bread had been invented.

as

I needed to mount a dozen Canon jacks and used the Harbor Freight step drills in your 3rd link. I used the 3 piece set. Harbor Freight is well known for selling junk, but these stepped drills work great.

Come on now! Check out the lava-preserved fossils they've dug up at Pompeii... isn't that where you're buried ?:-) ...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     |
             
               On Halloween, Frighten a Congressman
               Costume Yourself as a Voting Machine

They are working to improve quality. I've talked to a manager they move around from store to store to improve their retail stores, and was told they have had to drop a number of vendors because of quality problems. Some were replaced because another vendor offered better quality, and at a lower price. Some of the discussions we had resulted in changes in their website, as well. Most people don't use that grade of tool for profession work, but I've run into several guys who swear by their Pittsburgh Professional wrenches. One was putting two sets in his work truck and told me he had never had one break, but a lot had been stolen so he bought two sets at a time. Others told me they used them working on cars for a living, and had never had a problem. For their prices, they are hard to beat but you need to look at any tools you plan on using daily no matter who sells them. I know people who still swear by Craftsman hand tools because of the lifetime warranty. Then they brag about how many times Sears has replaced their broken tools.

I have been buying from Harbor Freight for almost 40 years and have only had one defective tool in that time. It was one of their 6 in 1 screwdrivers, and one piece wasn't properly punched. OTOH, I bought six that day for half price so I didn't bother to take back a $1.49 tool that I can fix on my drill press. When I started dealing with them, they only did mail order and I was buying factory second drill bits by the pound. Mostly 1/8", since I broke a lot of them drilling out rivets. A pound would last about 5 years for about $10.

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The movie \'Deliverance\' isn\'t a documentary!

Exactly! Dirt was new when you started out. ;-)

Buried? I'm not even buried at work.

That is easy when you have been working above your competency level for decades.

Consider a manual punch press. Newark and Farnell distribute the Deltron Lever Press and a range of punches. It used to go by the name Manupress. You'll need roughly US$1000 to get started.

-- Joe

I don't know why you're having difficulty getting the size you need from GreenLee. Maybe your supplier don't want to deal with it?

I have knock outs made by Green Lee that does nifty little things like taking out toggle switch holes and leaves behind the little tab notch for the key way in the switch all the way up to multi pin device knock outs in special shapes and sizes.

Maybe you are dealing with only an electrical supplier and not going to the horses mouth?

Go look at Green Lee online.

Of course, you could always use a uni-bit, tile cutter or hole saw! :))))

One must keep challenged. You with your mop, me (lately) with FPGAs. Microprocessor development was too boring.

You're *so* easy, AlwaysWrong!

Our FPGAs manage 10Gb / second streams. I think you lose again.

uit, as

s e

I got their IR thermometer when they had it on sale for $30. Seems to be OK, and for what I needed, I couldn't justify getting a Fluke. However, in general, I'm leery of getting stuff at HF since the crap factor is pretty high. Fine for tarp, rope, low tech stuff. I use their spring loaded punch to mark hole prior to drilling. But when it comes to something where I really care about how it works, I go elsewhere. That said, the stepped drills are excellent.

I must have half a dozen of those $3 DVMs. One stays in the car. A few are scattered in drawers around the house. I was doing some low tech work in the field where two digits would be enough, so I used the HF meters. When I had the meter on ohms and put it across a battery, it fried. No big deal, I had a spare with me. I also keep one or two tape measures in the car. You never know when you might need to measure something.

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.

--
Indeed.

The last time I used knockout punches was almost 40 years ago during the only time I ever worked under someone else. Tubes were still a more viable option than solid-state devices for many applications, especially in places like India. I remember having a mild argument with my boss when he asked me to design and construct a constant-current, high-voltage supply for electrophoretic work in a medical research lab.

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 and whaterver scraps of literature I could find. I wanted to use an EL84 at its "design maximum" ratings and he claimed that active devices should never be operated anywhere near their maximum ratings. I had my way, and the lab used the instrument for many years.

School teaches you the theory, but real world experience teaches you what is possible :-)...

Regards,

Chris