Appearance & Detailing Interior & Exterior Appearance Modifications

Bondo question

Thread Tools
 
Search this Thread
 
Old Jun 27, 2005 | 07:56 PM
  #1  
shep28's Avatar
Thread Starter
TECH Regular
iTrader: (4)
 
Joined: Jun 2004
Posts: 486
Likes: 0
From: Beachwood, Ohio
Default Bondo question

I am helping a neighbor fix some dents on his beater. We mixed the bondo and hardener and let sit over night. When we went to sand, the bondo was not hard. It had a rubbery consistency and kind of gummed up when we sanded it.

I have never used bondo. What caused this problem?
Reply
Old Jun 27, 2005 | 08:06 PM
  #2  
Camaro477's Avatar
12 Second Club
 
Joined: Mar 2005
Posts: 334
Likes: 0
From: Georgia
Default

what kind of bondo did you use, how much hardner? Make sure you mix it up good. Thats a big thing. I think that is possibly your problem.
Reply
Old Jun 27, 2005 | 08:48 PM
  #3  
ajd971's Avatar
Teching In
 
Joined: Apr 2004
Posts: 12
Likes: 0
From: Indianapolis, IN
Default

I would bet not enough hardner.
Reply
Old Jun 27, 2005 | 09:42 PM
  #4  
shep28's Avatar
Thread Starter
TECH Regular
iTrader: (4)
 
Joined: Jun 2004
Posts: 486
Likes: 0
From: Beachwood, Ohio
Default

I will strip it off and mix up a new batch tomorrow and then reapply.
Reply
Old Jun 27, 2005 | 09:44 PM
  #5  
01 Red WS6's Avatar
TECH Senior Member
iTrader: (4)
 
Joined: Dec 2003
Posts: 5,276
Likes: 1
From: Arlington TX
Default

I don't think you used enough hardner.. What color is the bondo now?
Reply
Old Jun 27, 2005 | 11:14 PM
  #6  
Y2K SS's Avatar
12 Second Club
iTrader: (1)
 
Joined: Jan 2005
Posts: 950
Likes: 0
Default

I KNOW you didnt use enough hardener. lolol. For about a 5" x 5" pile of bondo you need to use about a 4" line of the hardener.
Reply
Old Jun 27, 2005 | 11:17 PM
  #7  
BigSmallBlck2GZ's Avatar
Staging Lane
 
Joined: Apr 2005
Posts: 99
Likes: 0
Default

rule of thumb for bondo....pea size amount of hardner for a apple size amount of bondo and make sure you fold it over and over, dont stir it............if you put to much hardner, u jus will loose out on play time with it, so dont be scared of using more hardner..............
Reply
Old Jun 27, 2005 | 11:18 PM
  #8  
Camaro477's Avatar
12 Second Club
 
Joined: Mar 2005
Posts: 334
Likes: 0
From: Georgia
Default

doesn't really matter if you stir it or not as long as you get it mixed up.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Jun 28, 2005 | 01:52 PM
  #9  
BigSmallBlck2GZ's Avatar
Staging Lane
 
Joined: Apr 2005
Posts: 99
Likes: 0
Default

some people say ya to stirin, others say na, jus cause you get air bubbles and of course those will be pits after it drys and you sand it....whatever works for you, do it........
Reply
Old Jun 28, 2005 | 01:57 PM
  #10  
1998TA__1991RS's Avatar
TECH Fanatic
iTrader: (23)
 
Joined: Nov 2004
Posts: 1,306
Likes: 0
Default

do not stir it, it will trap air in the bondo and cause the paint to cave in after time
Reply




All times are GMT -5. The time now is 02:10 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE