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07-22-2011, 03:02 PM
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Join Date: Jan 2005
Location: Irmo, South Carolina
Posts: 361
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Greenlee Punch
Does anyone have a Greenlee punch they will loan or rent to punch the 2" hole in the firewall for the heater valve? I am in South Carolina and willing to pay shipping and rental fee.
Thanks
__________________
RVRC
Robert Cutter
RC & Moonpie
RV7 slider - First flight 5/3/14
Over 500 hours on the Hobbs now
N516RC
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07-22-2011, 05:55 PM
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Join Date: Jul 2007
Location: DuBois,Il
Posts: 144
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Greenlee Punch
Personally, I did not have much luck with the punches in the firewall...The stainless deformed somewhat around the edges..seemed like the composition and thickness of the firewall was not the best match for that device. Not sure if anyone else had the same results as I did.....that thickness of stainless is a bear to cut any way you do it...I will, however, say the Greenlee punch was perfect for making lightning holes in the firewall mounted Odyssey battery case..which also was almost impossible to do with a fly cutter.....YMMV..Good luck..
__________________
Brian K. Morrow
DuBois,Il
N433BC RV-7A Flying
RV-12is EMP done, FUSE in progress!..Official Repeat Offender
"Maintain thy airspeed...Lest the earth arise and smite thee..."
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07-22-2011, 06:08 PM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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Buy a used one
Quote:
Originally Posted by RVRC
Does anyone have a Greenlee punch they will loan or rent to punch the 2" hole in the firewall for the heater valve? I am in South Carolina and willing to pay shipping and rental fee.
Thanks
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Robert,
For the money you will spend renting and shipping one, just look for a used one to buy on EBay. For punching holes in SS, you will need to place an aluminum or mild steel plate between one side of the punch and the SS. Stainless does not cut easily. It's rather soft and tends to tear.
I won't loan mine out for use on SS. They always come back dulled or damaged.
Charlie Kuss
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07-22-2011, 06:11 PM
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Join Date: Aug 2007
Location: Topeka
Posts: 323
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holes
Hi Robert,
I went through this also. Ended up buying a set on ebay and then, when done, sold them on ebay. My experience with the Greenlee and the ss firewall was that the punch tended to pinch the steel sheet inside the punch rather than cut it. It was as if the stainless steel was just to thin for the punch to "sheer" the hole. I ended using the step drill and then further opening the holes with a dremel and carbide bit. Actually, it went pretty fast this way. Just wear gloves. That's my 2 cents. Your's may vary.
__________________
Steve Stucky
Topeka, Ks
N282S - VariEze 500+ hrs
N283S - RV-7 1400+ hrs
KC-135 A/D/E Boomer (Ret.)
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07-22-2011, 07:40 PM
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Join Date: Jan 2005
Location: Irmo, South Carolina
Posts: 361
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Thanks guys
Brian, Charlie and Steve, thanks for the input. I will seek other methods to cut these holes. Brian, did you notice the similar last names? I have a son named Brian spelled the same way.
Thanks,
__________________
RVRC
Robert Cutter
RC & Moonpie
RV7 slider - First flight 5/3/14
Over 500 hours on the Hobbs now
N516RC
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07-22-2011, 07:47 PM
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Join Date: Jul 2005
Location: Bolingbrook, Illiniois
Posts: 254
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An alternative
Hi Robert,
I used a good hole saw from Home Depot. It did a good job and a little finish smoothing and it was perfect. I cut a number of holes in the firewall that way and they all looked very good. The hole diameter comes out perfect as well.
Paul
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Paul
N694BP reserved
RV-6A Very Slow Build!
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07-22-2011, 08:11 PM
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Join Date: Jul 2007
Location: DuBois,Il
Posts: 144
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Name
That means "Brian" is spelled correctly!....Not like those bizarre "Bryan" people!! lol
__________________
Brian K. Morrow
DuBois,Il
N433BC RV-7A Flying
RV-12is EMP done, FUSE in progress!..Official Repeat Offender
"Maintain thy airspeed...Lest the earth arise and smite thee..."
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08-08-2011, 04:28 PM
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Join Date: Aug 2009
Location: Ottawa, Canada
Posts: 108
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So, I tried it...
Quote:
Originally Posted by pczar3
Hi Robert,
I used a good hole saw from Home Depot. It did a good job and a little finish smoothing and it was perfect. I cut a number of holes in the firewall that way and they all looked very good. The hole diameter comes out perfect as well.
Paul
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I'm just cutting the 2" hole through the firewall for the heat tube. I was wondering how to cut the stainless, since even wee drill holes are a huge pain. A hole saw? Why not? Well, I turned the drill slowly and used a lubricant, as per Sage Wisdom. After about 15 minutes of whirling I managed to "cut" a groove about 1/32 deep. It mainly served to polish the stainless.
I think I'll try a punch, or failing that, dynamite.
FYI,
Rob
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08-09-2011, 06:40 AM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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The Greenlee punch will cut the firewall just fine. It helps if you begin to punch it, back off, turn the punch about 15 degrees, retighten. Repeat that about three times then go for broke.
I have several punches; not sure I have a 2" punch (I do have the the instrument hold two-size punch; that much I know), but I'll check today if you're still interested.
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08-09-2011, 07:07 AM
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Join Date: Jan 2005
Location: Irmo, South Carolina
Posts: 361
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Thanks Bob.
I still haven't cut the hole and haven't decided what to do it with. Another builder one hangar row over just bought a hole saw, but hasn't cut her's yet. I may wait to see how that comes out. May I reserve the right to get back to you on that?  gotta do some thing soon. Engine was ordered yesterday! 
__________________
RVRC
Robert Cutter
RC & Moonpie
RV7 slider - First flight 5/3/14
Over 500 hours on the Hobbs now
N516RC
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