 Best way to cut a hole in a steel deep valence, and not destroying the paint. |
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| Aaron Cox |
 Aug 31 2006, 10:49 PM
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#1
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Professional Lawn Dart  Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California  |
long story -
i had a triad dual out exhaust, and i scored an early deep valence. i had the hole welded up, and was going to have to cut 2 other outlets anyway..... so now i have a eurorace single out header. guess what, it goes out about where the old hole used to be.... so how do i cut the hole and not fubar the paint? masking tape? Jigsaw? Dremel spiral saw? plasma (joke?)? 3.5" holesaw? maybe i can make a nice "trim ring" for the porthole exhaust, kinda like what you see on boats and mustangs where the exhaust goes thru a "porthole" ideas? anyone wanna help by GAF next weekend? LOL EDIT: here is what look like an easy way to cover up a not so stellar hole cut..... now, can anyone make one for me? LOL (IMG:http://www.classicmuscle.net/1965%20Ford%20Mustang%20Red/rear.jpg) |
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| PRS914-6 |
Aug 31 2006, 11:21 PM
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#2
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Excellence Magazine Project 914 3.6 Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None  |
Try an electrical die (male and female) They work slicker than hell and are used for punching holes in electrical panels for conduit. I used them to punch the holes for my oil tank. Any electrician will have a set. You might still chip a little paint though but I think it would be the cleanest way. Make sure they are sharp and not worn out.
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| Brando |
Aug 31 2006, 11:26 PM
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
Plasma cutter?
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| jd74914 |
Aug 31 2006, 11:31 PM
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Its alive Group: Members Posts: 4,782 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Plasma cutter would blister the paint. I'd just use a dremel and try to cut really smoothly. I don't know how I would paint the insides of the cut tho.
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| Lou W |
Aug 31 2006, 11:42 PM
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#5
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"Here Kitty Kitty" my ass...... Group: Members Posts: 4,109 Joined: 9-May 04 From: Roseburg, OR. Member No.: 2,039 Region Association: Spain |
QUOTE(PRS914-6 @ Aug 31 2006, 10:21 PM)  Try an electrical die (male and female) They work slicker than hell and are used for punching holes in electrical panels for conduit. I used them to punch the holes for my oil tank. Any electrician will have a set. You might still chip a little paint though but I think it would be the cleanest way. Make sure they are sharp and not worn out. I would think that the hole punch would work fine if the metal is flat, I can't remember if the rear was curved or not, if it's curved, it might crease the metal and cause the paint to crack. I'd probably cut it first with a pnuematic saw such as this, I've used one on my car and it cuts real nice, then clean it up with a dremel. Attached image(s) 
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| So.Cal.914 |
Aug 31 2006, 11:43 PM
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#6
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
The hole punch (die) is a good idea but even on a square D sub panel which
is 14 ga or thicker it would misshape the metal and that was flat. On curved metal the best results I have had was starting with a holesaw. I would lay down a few layers of duct tape perpindicular to each other this keeps the hot shavings off the paint and helps keep the paint from being grabbed and pealed off. Drill a pilot hole for the saw and cut slowly keeping the saw at the same angle you started at. Hole saws can grab your material so go slow and be ready if it happens. Have someone feed a small amount of water from a squirt bottle on the saw but careful not to get it in your drill. Finish with a dremel. If the valance is off the car secure it to a bench or board. |
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