VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Main > RV Building Tips/Techniques
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 10-12-2010, 02:22 PM
Auburntsts's Avatar
Auburntsts Auburntsts is online now
 
Join Date: Jan 2005
Location: Tampa, FL
Posts: 2,905
Default At the risk of thread creep...

Paul what did you use to make your EFIS cutout in the picture?
__________________
Todd "I drink and know things" Stovall
PP ASEL-IA
RV-10 N728TT - Flying!
WAR EAGLE!
Reply With Quote
  #12  
Old 10-12-2010, 02:39 PM
Mel's Avatar
Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
Posts: 10,919
Default You sure about the 5/8" pilot hole?

Quote:
Originally Posted by Ironflight View Post
Spot it with a #40, enlarge to 5/8? with a step drill, then slowly turn the screw with a nice long breaker bar until you hear the ?snap? - Your hole is ready! A rare moment of shop silence these days is worth the price, believe me?.
Paul
My punches have a 3/4" mandrel.
__________________
Mel Asberry, DAR since the last century. Over 1,000 certifications accomplished.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
Reply With Quote
  #13  
Old 10-12-2010, 03:29 PM
JonJay's Avatar
JonJay JonJay is offline
 
Join Date: Jan 2007
Location: Battleground
Posts: 4,348
Default Greenlee is a brand...

Kind of like a Crescent Wrench (adjustable wrench), or "Vice-Grips"(locking adjustable wrench). Greenlee does make all kinds of punches but I dont believe they make the dual punch for aviation instruments but I could be wrong. Greenlee's main products are for the professional electrician.
No matter, whatever you call it, they are awesome and make quick easy work. I was lucky enough to borrow one for my panel.
There are square punches for common DB connectors but I dont think anything big enough for an EFIS or EMS.
__________________
Smart People do Stupid things all the time. I know, I've seen me do'em.

RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
Reply With Quote
  #14  
Old 10-12-2010, 04:48 PM
Ironflight's Avatar
Ironflight Ironflight is offline
VAF Moderator / Line Boy
 
Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,461
Default

answers:

1) For the EFIS holes? Much more noisy - cut-off wheel, drill holes for the corners, files to make the edges perfect, and scotchbrite disks to finish.

2) Yup Mel - 5/8" for mine. Just did four of them, and that's the size I drilled to for the mandrel with my step drill. Must be different manufacturers...

3) JonJay, you're right - I doubt mine was made my Greenlee - just used the term like (as you say) we use "Crescent Wrench" so folks know what 'm talking about. Wonderful thing to have in the box, no matter who makes it...

Paul
__________________
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
Reply With Quote
  #15  
Old 10-12-2010, 06:56 PM
PCHunt PCHunt is offline
 
Join Date: Feb 2007
Location: San Diego, CA
Posts: 1,714
Default -Caution-

Electrician hole punches are "sized" differently. For example, a 2" electrical punch would NOT make a 2" hole, it would make the proper hole for a so-called 2" electrical fitting.

Just make sure if you buy a punch you are sure of the exact diameter of it.
__________________
Pete Hunt, [San Diego] VAF #1069
RV-6, RV-6A, T-6G
ATP, CFII, A&P

2021 Donation+, Gladly Sent
Reply With Quote
  #16  
Old 10-14-2010, 04:57 PM
penguin penguin is offline
 
Join Date: Jan 2005
Location: England
Posts: 1,094
Default Available for rent in the UK

For builders in the UK, Gloster Air Parts has one of these punches available for rent. Call Diana on 01252 617484.

Pete
Reply With Quote
  #17  
Old 10-21-2010, 12:08 AM
Flying Scotsman Flying Scotsman is offline
 
Join Date: Nov 2005
Posts: 1,256
Default

Greenlee makes really good tools...but just a heads-up. I don't know if it was my ****-*** technique, or the wrong material, but here's what happened:

I borrowed an electrician friend's Greenlee set to make the hole in the firewall for the cabin heat vent valve (whatever size that was). The punch did *not* punch out cleanly, but instead, on one side, it grabbed the stainless steel and stretched it out, at the same time jamming it in between the male and female parts of the die. A royal pain in the @ss to remove, and took some additional clean-up on the firewall to make it look perfect again (fortunately, had some material to sand away with a drum so everything came out very nice in the end).

I think it was the relatively thin stainless steel...these things are built for thicker non-stainless (electrical boxes), so they work fine on thicker aluminum, but it sure was a booger on that thin firewall stainless.

YMMV...as I said, might have been something I did wrong, I dunno...but forewarned is forearmed.
__________________
Steve "Flying Scotsman"
Santa Clarita, CA
PP-ASEL, ASES, Instrument Airplane

RV-7A N660WS flying!
#8,000
Reply With Quote
  #18  
Old 10-22-2010, 11:02 AM
Toobuilder's Avatar
Toobuilder Toobuilder is offline
 
Join Date: Jul 2009
Location: Mojave
Posts: 4,738
Default

I'll agree that these punches are great, as I am doing the new -8 panel, but even MORE satisfying than turning the ratchet until the "pop" is using a hydraulic press to do the work for you. Just a couple of pumps and you are through like butter.
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
Reply With Quote
  #19  
Old 10-22-2010, 05:16 PM
LettersFromFlyoverCountry's Avatar
LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,816
Default

Quote:
Originally Posted by Ironflight View Post
but if you do, think about borrowing one of these little wonders.
For those in Minnesota, I have one for the two holes I cut in the instrument panel that's available to anyone who'd like to use it. (I also give out my engine hoist. I vaguely track it around the airfield and I think I know where it is at the moment.)

Someday I think it would be cool if someone would build a nifty Web site for an RV tool crib, where you could look up the tool you want to borrow, click on your state, and then get a list of people who've registered the tools they're willing to lend.

Anyway, I've got a couple of sizes of Greenlee punches and other assorted tools that people can borrow if they want.

BTW, there is a technique involved in using these things. You have to compress and turn, back off, shift the rotation and repeat. You want to do this about 7 times. Then you go for broke. If you try to go for broke on the first try, you're probably going to have a problem.
__________________
Bob Collins
St. Paul, MN.
Blog: Letters From Flyover Country
RV-12iS Powerplant kit
N612EF Builder log (EAA Builder log)
Last article: "Gonna Finish This Sucker" (Kitplanes)
Reply With Quote
  #20  
Old 10-22-2010, 10:08 PM
PJSeipel PJSeipel is offline
 
Join Date: Jan 2005
Location: Albany, GA for the moment
Posts: 294
Default

www.buildyourcnc.com

$2000, 3 months of work, learning software, test cutting, etc. but now I can cut a million copies of my panel no problem.

Learning a new skill....priceless. (oh, and it cuts square holes, round holes, and any other shape you want.)

PJ Seipel
RV-10 #40032
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 05:24 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.