The Ford Barn

mrtexas · 07-16-2010, 04:17 PM

I need to cut some 7/16 holes for side curtains. Is this what I need? Note this is a blind hole without access to the back.

http://www.amazon.com/Mountain-10-Pi.../dp/B000LQB6NI

skip · 07-16-2010, 04:39 PM

Opps I mis read this post. Thought the holes were for side cowl lamps...some guy asked this question on the old Ford Barn too. Sorry to take up your time.

Greenlee Tools. KNOCK OUT PUNCH makes a nice clean hole. Use 'em to build my Motor Starting Panels. Rent them from ACE Hardware once in a while or AutoZone Auto Parts if your lucky enough to live in the right area.

skip.

custom53 · 07-16-2010, 04:40 PM

there is a guy on the jalopy journal thet sells the piece that you need with the correct raised hole. check it out.

Doug in NJ · 07-16-2010, 05:19 PM

I needed to drill some 3/4" holes in sheet metal (in a patch panel in the rear wheel well,
for the D-nuts that hold the fender braces). I used a step drill from Harbor Freight, and it worked fine.

Doug

d.j. moordigian · 07-17-2010, 05:45 PM

Google , Rotabroach, I have the same problem and this is what I'm going to use.

Dudley

Art Bjornestad · 07-17-2010, 06:17 PM

Sponsored Links (Register now to hide all advertisements)

The great part about step drills is that they will not tear sheet metal out of your ungloved hands

Fred K-OR · 07-17-2010, 10:59 PM

Take it to a machine shop. They can do it well and does not cost much-less that the tool.

RockHillWill · 07-18-2010, 08:10 AM

Mr. Moordigians' idea regarding the 'rotabroach' is an excellant approach. We use them for removing spot welds and they leave a nice, clean round hole. Not cheap, but worth every penny!

2manycars · 07-18-2010, 08:45 AM

The hole saw in your link will work if the saw is the correct size. The Greenly punch will not work in a blind hole. It need access from both sides to assemble the punch. It is made for making holes in electrical panels. The step drill bit is the best suggestion, as it will not tear the metal so much when it breaks through.

07-16-2010, 04:17 PM	#1
mrtexas Senior Member Join Date: May 2010 Location: Sugar Land, TX Posts: 4,395	Cutting holes in sheet metal I need to cut some 7/16 holes for side curtains. Is this what I need? Note this is a blind hole without access to the back. http://www.amazon.com/Mountain-10-Pi.../dp/B000LQB6NI Last edited by mrtexas; 07-16-2010 at 05:00 PM.

07-16-2010, 04:39 PM	#2
skip Banned Join Date: May 2010 Location: Sturgeon Bay, Wisconsin Posts: 408	Re: Cutting holes in sheet metal Opps I mis read this post. Thought the holes were for side cowl lamps...some guy asked this question on the old Ford Barn too. Sorry to take up your time. Greenlee Tools. KNOCK OUT PUNCH makes a nice clean hole. Use 'em to build my Motor Starting Panels. Rent them from ACE Hardware once in a while or AutoZone Auto Parts if your lucky enough to live in the right area. skip. Last edited by skip; 07-16-2010 at 05:36 PM.

07-16-2010, 04:40 PM	#3
custom53 Member Join Date: Jun 2010 Location: monessen pa Posts: 65	Re: Cutting holes in sheet metal there is a guy on the jalopy journal thet sells the piece that you need with the correct raised hole. check it out.

07-16-2010, 05:19 PM	#4
Doug in NJ Senior Member Join Date: May 2010 Location: Princeton, NJ Posts: 965	Re: Cutting holes in sheet metal I needed to drill some 3/4" holes in sheet metal (in a patch panel in the rear wheel well, for the D-nuts that hold the fender braces). I used a step drill from Harbor Freight, and it worked fine. Doug __________________ My '31 S/W sedan project:http://31ford.dougbraun.com My restoration diary: http://dougbraun.com/blog

07-17-2010, 05:45 PM	#5
d.j. moordigian Senior Member Join Date: May 2010 Location: Fresno, Ca. Posts: 3,636	Re: Cutting holes in sheet metal Google , Rotabroach, I have the same problem and this is what I'm going to use. Dudley

07-17-2010, 06:17 PM	#6
Art Bjornestad Senior Member Join Date: May 2010 Location: Westlake Village, CA Posts: 477	Re: Cutting holes in sheet metal Sponsored Links (Register now to hide all advertisements) The great part about step drills is that they will not tear sheet metal out of your ungloved hands

07-17-2010, 10:59 PM	#7
Fred K-OR Senior Member Join Date: May 2010 Location: Stayton, Oregon Posts: 3,806	Re: Cutting holes in sheet metal Take it to a machine shop. They can do it well and does not cost much-less that the tool. __________________ Fred Kroon 1929 Std Coupe 1929 Huckster

07-18-2010, 08:10 AM	#8
RockHillWill Senior Member Join Date: May 2010 Location: Rock Hill, S.C. Posts: 985	Re: Cutting holes in sheet metal Mr. Moordigians' idea regarding the 'rotabroach' is an excellant approach. We use them for removing spot welds and they leave a nice, clean round hole. Not cheap, but worth every penny! __________________ Uncle Bud says "too soon old, too late smart!"

07-18-2010, 08:45 AM	#9
2manycars Senior Member Join Date: May 2010 Location: Eastern CT Posts: 2,732	Re: Cutting holes in sheet metal The hole saw in your link will work if the saw is the correct size. The Greenly punch will not work in a blind hole. It need access from both sides to assemble the punch. It is made for making holes in electrical panels. The step drill bit is the best suggestion, as it will not tear the metal so much when it breaks through.