body filler chipping - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 10-26-2008, 05:52 PM
Registered User
Join Date: Aug 2008
Location: monterey,tn.
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
body filler chipping

Hope you guys can help I have filled the joint between the rocker and the 1/4 panel and when sanding, and almost to a feather edge I noticed that the edge didn't look right so I pecked on the edge with a scraper and it chipped off, so I tried just scraping and a lot of it would just chip off. I had sanded the metal with 80 grit paper before I started and I used evercoat rage gold. Now my question, should it have chipped off like that, did I use the wrong grit paper, could the filler been mixed wrong (I mixed per the instructions) My shop temp. was about 65 deg. was that too cold? Maybe I did something that I should not have done or didn't do something that I should have, any suggestions/help info that any of you guys can give me would be appreciated. Also should I clean all the rest off even if it appears to be bonded? Thanks for your help. BILL

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 10-26-2008, 07:25 PM
Brian Martin,Freelance adviser
Last photo:
Join Date: Jun 2004
Location: San francisco bay area
Age: 58
Posts: 15,486
Wiki Edits: 0

Thanks: 4,305
Thanked 3,713 Times in 2,754 Posts
The metal temp could have been too cold, the metal not clean, it wasn't actually roughed up right in that spot with 80. Those are some of the reasons that could do it.

Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-26-2008, 09:11 PM
Last photo:
Join Date: Nov 2003
Location: Green Bay, WI
Age: 47
Posts: 2,074
Wiki Edits: 0

Thanks: 0
Thanked 10 Times in 9 Posts
Yeah like brian said could be one of several reason. Did you mix in a decent amount of hardener, and was it mixed well. If the filler is still soft when you sand, it won't feather and will just tear away. Same goes for the other extreme, if you add way too much hardener it could make it more brittle. You do have a pretty good latitude on how much hardener you can add though. And was it clean, and you didn't apply it over any paint (some can be, but most are not recommended over paint, and some old tech unactivated paint can just continue chipping away at the edge and when you sand not want to feather edge) Filler will chip if its chisled or struck, but just a light scraping like it sounds like you did, shouldn't really have it chipping off.
If I do apply over metal, I like to go course and grind where I will be applying filler, as that was the way I was taught and really didn't get away from it. But more often I will sand and apply epoxy filler first. But sanding with 80 should have worked for adhesion.
Another thing is that seam is often brazed. Body filler may not like sticking to the brazing, and it should be removed or epoxy primer applyed over it first. But really, if the brazing was not removed and then that seam welded up solid, your body filler won't last that long anyways before it cracks in the seam area. The factory often brazes the seam, and then applys a flexable seam sealer. If you intend to fill the seam, it needs to be welded solid, if you haven't.
Hard to say if it was too cold. The metal temp (was the metal warm?) and cleanliness is more important then shop temp.
It could even possibly be the can of filler itself or the tube of hardener went bad, it can happen.

Last edited by kenseth17; 10-26-2008 at 09:25 PM.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-27-2008, 11:47 AM
Registered User
Join Date: Aug 2008
Location: monterey,tn.
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Body filler chiping

Much thanks to you guys for your help, from what you all have said I tend to think that I did not roughen ths surface enough, I willgo back and try that first. THANKS AGAIN BILL
Reply With Quote Quick reply to this message

Recent Body - Exterior posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Plastic filler tips. MARTINSR Body - Exterior 14 03-03-2009 05:11 PM
Sprayable Body Filler robs ss Body - Exterior 10 11-19-2007 06:56 PM
Hairline Cracks in Body Filler! jjhabing Body - Exterior 9 09-20-2006 12:00 AM
body filler and black paint oldred Body - Exterior 13 12-18-2004 09:34 PM
Body Filler do's & don'ts Ron M Body - Exterior 2 09-07-2004 05:00 AM

All times are GMT -6. The time now is 05:11 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.