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Old 08-29-2009, 11:06 PM   #1
bigbadchev72
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sheetmetal gauge

I tried to search, but didnt find what i was looking for, Can someone tell me what gauge sheetmetal is best for making small patches in body panels?
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 08-30-2009, 10:01 AM   #2
71tahoe
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Re: sheetmetal gauge

I would recommend using the same as original which should be 19 ga. I suspect 18 is a little more common and would only be slightly thinner. What kind of repairs? That may make a difference in what the experts (which I'm not) might suggest.
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Old 08-30-2009, 11:02 AM   #3
JimKshortstep4x4
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Re: sheetmetal gauge

20 gage will work. Sheet metal is thicker as the numbers get smaller so 18 gage is thicker then 19 gage.

Jim
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1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
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1971 Snowplow built on a Blazer frame
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Old 08-30-2009, 12:35 PM   #4
bigbadchev72
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Re: sheetmetal gauge

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Originally Posted by 71tahoe View Post
I would recommend using the same as original which should be 19 ga. I suspect 18 is a little more common and would only be slightly thinner. What kind of repairs? That may make a difference in what the experts (which I'm not) might suggest.
Speaker holes in the doors are needing patched
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 08-30-2009, 12:47 PM   #5
Sinister
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Re: sheetmetal gauge

Quote:
Originally Posted by JimKshortstep4x4 View Post
20 gauge will work.

Jim
X2, should be perfect for patching up your doors.
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Old 08-30-2009, 02:22 PM   #6
71tahoe
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Re: sheetmetal gauge

Quote:
Originally Posted by JimKshortstep4x4 View Post
20 gage will work. Sheet metal is thicker as the numbers get smaller so 18 gage is thicker then 19 gage.

Jim
Yep, I have a bad habit of thinking backwards.
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Old 08-31-2009, 10:28 PM   #7
bigsnookmaster
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Re: sheetmetal gauge

18 guage will be easier to work with and not heat warp as easily.
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Old 09-01-2009, 09:54 AM   #8
JimKshortstep4x4
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Re: sheetmetal gauge

FYI, the door panels where the speakers are located is 21 gage, (.0329). 20 gage is .0359.

If you mic clean metal in the area next to the holes it will be approximately .033"

Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end
1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
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