3M Bristle Discs - Anyone use these? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- 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
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 09-11-2008, 12:02 PM
Huckmag's Avatar
Registered User
 

Last journal entry: Change of Plans
Last photo:
Join Date: Aug 2008
Location: Dallas
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
3M Bristle Discs - Anyone use these?

Somewhere in my travels I saw a recommendation for 3M bristle discs to remove surface rust and paint from panels. Anyone try these? What do you think? My car was soda blastd and primed, then set under a tarp for months outside. The panels have plenty of surface rust & cheapo primer that I need to get off. Thanks in advance, Darren

http://www.shop3m.com/61500139011.ht...KU=61500151461

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-11-2008, 12:18 PM
35WINDOW's Avatar
Member
 

Last journal entry: Dash Mock-up
Last photo:
Join Date: Dec 2004
Location: utah
Age: 59
Posts: 1,395
Wiki Edits: 0

Thanks: 7
Thanked 21 Times in 19 Posts
I use them-they aren't for everything (I like Rolocs mostly) but they do come in different "Grits" are clean things up nice-
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-11-2008, 02:13 PM
Brian_B's Avatar
Lost in the 50s!
 

Last journal entry: time to start body work
Last photo:
Join Date: Jan 2006
Location: Mountain Home, AR
Age: 47
Posts: 759
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I am certainly no body man and have never used them, but you might want to consider what you are going to coat the parts with when you start over.

If you use epoxy primer (which is what I will be doing), read the recommendations for the product you will be using. I am using SPI epoxy and it recommends things be sanded with 80 grit.

I do use the 2" roloc disks in tight places though. I think they are 50 grit.

As far as paint removal..I have been getting the majority of it off with paint stripper.

If it has been blasted and sprayed with cheap primer...i bet it comes off pretty easily with whatever method you choose.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-11-2008, 04:35 PM
Member
 
Last photo:
Join Date: Nov 2003
Location: Green Bay, WI
Age: 44
Posts: 2,073
Wiki Edits: 0

Thanks: 0
Thanked 6 Times in 6 Posts
We use small (1 inch) bristle disk for cleaning corrosion up around rivet heads at work. They work well for that, the little finger go around the rivet head and clean up tight to the rivet. Never tried a larger one for anything else. I would think a scotchbrite disk or strip and clean disk like others had mentioned may work better for rust in paint removal. Actually I remove paint and minor surface rust by sanding with a 8" mudhog or a da, and would save the scotchbrite disk for pitted areas, if I didn't have a blaster.
The bristle disks I believe are fairly expensive and the fingers wear down fairly quickly at least how we use them.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-11-2008, 11:26 PM
Huckmag's Avatar
Registered User
 

Last journal entry: Change of Plans
Last photo:
Join Date: Aug 2008
Location: Dallas
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the input guys. I think one of the selling points I heard was the design keeps heat down due to the air between the finger bristle things. The 50 grit they come in will probably mean I'll pass & just use a DA with 80 grit. If they were available in 80 grit I'd try one. I may find a place for one somewhere before it's all said and done, but for now I'll skip it.

Brian, I'll be using Epoxy primer too, likely from Southern Poly as well. I agree it makes sense to follow the process they recommend.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-19-2008, 02:19 PM
Registered User
 

Last journal entry: Several Car Projects
Last photo:
Join Date: Jan 2008
Location: Minnesota
Posts: 32
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
3M Scotch-Brite Bristle brush

Quote:
Originally Posted by Huckmag
Thanks for the input guys. I think one of the selling points I heard was the design keeps heat down due to the air between the finger bristle things. The 50 grit they come in will probably mean I'll pass & just use a DA with 80 grit. If they were available in 80 grit I'd try one. I may find a place for one somewhere before it's all said and done, but for now I'll skip it.

Brian, I'll be using Epoxy primer too, likely from Southern Poly as well. I agree it makes sense to follow the process they recommend.
I have used these types of products before and they work great. No heat distortion. They are primarily used to strip paint and coating on airplanes, engine heads, and work on paint as well. I have been able to clean out extreemly rusty areas that are paper thin without damaging the metal. And when the bristle cleans it cleans all the way to nice shiny metal.

I typically use the 50 grit and go over it with a 80 grit DA and then I am good to go with paint.

* For the 1", 2" and 3" a pneumatic right angle grinder will work fine.

* An electric 4.5" grinder is highly recomened for the 4.5" discs. The bristle really like the torque from the electric tool.

Last edited by edselman59; 09-19-2008 at 02:28 PM.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 09-20-2008, 05:35 AM
wildthing's Avatar
Registered User
 

Last journal entry: time flies
Last photo:
Join Date: Jun 2007
Location: chambersburg, pa.
Posts: 223
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
i use the 3" disk that look like a harden pot scruber. i have even used one on my 4 1/2 grinder . takes paint off very well doesn't hurt the metal.
Reply With Quote Quick reply to this message

Recent Body - Exterior posts with photos

Quick Reply
Message:
Options

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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
Bristle or coating removal discs? Gearhead forever Body - Exterior 2 10-02-2006 02:36 PM
Bristle Discs 35WINDOW Body - Exterior 9 09-27-2006 02:53 PM
bristle disc Ranchero_65 Body - Exterior 1 07-04-2006 10:50 AM
tough transplant - discs for miniature rod grouch Suspension - Brakes - Steering 16 05-16-2005 09:14 PM
3M "plastic" bristle cups? jcarter Body - Exterior 2 02-01-2005 08:25 AM


All times are GMT -6. The time now is 07:36 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.