one more for the quintessential workshop - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 5th March 2006, 11:20 PM   #1
diyAudio Member
 
Join Date: Nov 2004
Default one more for the quintessential workshop

About a month ago I picked up a twelve piece set of hole punches at the "made in china" tool supply on the industrial side of town. It was less than ten bucks I think. Hmm - I'm thinking - might come in useful.

One month later. My god, how did l work without these all these years? Perfect holes in gaskets, shims, rubber/fibre washers, thin metal, etc. Use a flat block of hardwood under em. Any tinkerers out there without a set, run out and get some. Don't have to be expensive - cheap ones are easy enough to sharpen.
  Reply With Quote
Old 5th March 2006, 11:26 PM   #2
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On

All I can find are Greenlee. I had a set once.

-Chris
  Reply With Quote
Old 5th March 2006, 11:29 PM   #3
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Different kind of hole punch, I think. These would be the kind with a sharp-edged circular front end and a rear that resembles the rear of a chisel. You make the hole by whacking it with a hammer. No good for chassis work, but great for flexible and thin materials.
__________________
And while they may not be as strong as apes, don't lock eyes with 'em, don't do it. Puts 'em on edge. They might go into berzerker mode; come at you like a whirling dervish, all fists and elbows.
  Reply With Quote
Old 5th March 2006, 11:32 PM   #4
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi SY,
Mine used a mandrel and bolt. You could use a nut driver, then a wrench. Still only good for thin chassis metal.

They were darn expensive back in 1978, no way I can afford another set. I even had a square one.

-Chris
  Reply With Quote
Old 5th March 2006, 11:51 PM   #5
diyAudio Member
 
Join Date: Nov 2003
Location: Tempe, AZ
in the realm of "made in China, but barely good enough", US residents might be interested in Harbor Freight's Greenlee-clone set of punches:

http://www.harborfreight.com/cpi/cta...emnumber=91201
  Reply With Quote
Old 6th March 2006, 12:19 AM   #6
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Hooray for Harbor Freight!
Sure,the stuff may be 'cheap',but who cares..
If something breaks in 6 months,you can go get a new set for $20!
  Reply With Quote
Old 6th March 2006, 12:21 AM   #7
diyAudio Member
 
Join Date: Nov 2004
Yeah, I was referring to the "chisel" type. I'm not a professional tradesman, so this is only a guess, but I imagine the Greenlee knockout punches are best for high freqency jobbing that would wear out an expensive step drill very quickly. For most hobby work, a step drill is the way to go.

About step drills, I've heard that the two flute designs are superior to single for the reason that as they progress to larger and larger holes they remain perfectly centered. A single flute/edge step drill will end up ever so slightly off from the original center you started off from. Not a big deal for 80 percent of what you do, but sometimes really critical.

Knockout madrels still require a pilot hole, so it can't be argued that they're 100percent cleaner (less metal shavings) than step drills. A pair of step drills was another purchase some years back that proved to be brilliant.

Hole punches are really in a different league. Very thin metals, or rubber, fabric, paper, cardboard, etc. I've always made due with whatever was at hand before, with basically satisfactory results. But I never realized what labor savings, and what clean results were given by these things.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Audio Workshop D3 Kit lawbadman Digital Source 16 26th April 2006 03:58 PM
A little Speaker Workshop help kneadle Multi-Way 18 25th October 2004 11:12 PM
fft (Speaker Workshop) Dave Jones Multi-Way 6 29th June 2004 12:49 AM
What's in your workshop? jackinnj Everything Else 11 6th August 2003 10:32 PM


New To Site? Need Help?

All times are GMT. The time now is 08:11 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2