What grit? before and after epoxy sealer ? - 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 08-15-2005, 10:10 PM
Member
 
Join Date: Dec 2004
Location: nj
Age: 48
Posts: 31
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What grit? before epoxy sealer and after?

Guys, first of all thanks for answering my questions about this sanding questions.
If I use epoxy as a sealer on top of the 2K;
Should I finish the 2K primer 600 wet before epoxy?
And after epoxy sealer,
Should I 600 wet sand the epoxy and top coat?
This sanding grits on diffrent stages confuses me. I need your guidenes.
Thanks as allways.

    Advertisement

Last edited by 67LS1T56; 08-15-2005 at 10:38 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-15-2005, 10:53 PM
Member
 

Last journal entry: metal finish
Join Date: Nov 2004
Location: Central Jersey
Age: 31
Posts: 318
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
sand the 2k with 600 if you want then spray the sealer and then ur base then clear... you dont have to sand the sealer its not suggested that you do that.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-16-2005, 05:38 AM
Member
 
Last photo:
Join Date: Jan 2005
Location:
Posts: 3,707
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
If you're using the epoxy as a sealer and only apply one coat then yeah just spray your color directly with no scuffing. Ususally spraying over uncured epoxy will cause a small amount of gloss dieback but nothing to be concerned about.

If you have the time to wait and want a better as sprayed finish then apply two coats of epoxy sealer and let it cure completely- should take 3 days to a week, then lightly sand with 600 or 800 grit and lightly scotchbrite any non sandable areas and apply your paint. Shooting over cured epoxy always gives a better as sprayed gloss with no dieback problems. JMO, there's many ways to skin a cat.

You can also paint directly over your 2K without using a sealer as well but cured and sanded epoxy IMO makes a much better surface with a better solvent barrier than urethane surfacers. Some urethane surfacers are more prone to absorbing solvents than others.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-16-2005, 09:33 AM
Member
 
Last photo:
Join Date: Mar 2005
Location: Mesquite, Tx
Posts: 161
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
what about when you still have some body work to do? I recently shot a trunklid with 2k epoxy primer. It came out very slick and glossy. How is body filler going to stick to a fully cured epoxy surface? I still have some pings to fix.

What about older areas where the finished has chalked? What steps should I take to prep it for my body filler to stick?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-16-2005, 10:36 AM
rrmccabe's Avatar
GM Muscle
 
Last photo:
Join Date: Jul 2005
Location: Des Moines, IA
Age: 52
Posts: 518
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Something like a trunk I would give a quick scuff regardless. Since you have a few dings to fill you have not done your filler primer work anway and by time you get the bondo work done, fill primer and blocking and ready to seal, you will probably be near your epoxy maximum window anyway. So when in doubt sand.

As far as the chaulking other peices, this is UV damage. Not a big deal, but you cant paint over it. Sand it with 320-400 to get that layer off and re epoxy it.

When you are done with the sealer I like Bobs method from above. Two coats and then sand with 600. Let sit a couple days and paint. I think this makes for the ultimate seal job. Just my opinion of course

Rich
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-17-2005, 09:27 PM
Member
 
Join Date: Dec 2004
Location: nj
Age: 48
Posts: 31
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Bob, 600-800 wet or dry?
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-17-2005, 09:31 PM
rrmccabe's Avatar
GM Muscle
 
Last photo:
Join Date: Jul 2005
Location: Des Moines, IA
Age: 52
Posts: 518
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I am not bob

But fresh epoxy does not sand that well dry. Wet with a little soap works best.

See what Bob says but I bet he will agree. If not, go with what he says. Hes the man !

Rich
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-17-2005, 10:04 PM
Member
 
Join Date: Dec 2004
Location: nj
Age: 48
Posts: 31
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thank you Rich for the quick replay. I tought so need wet sanding. But hey I'm trying to not to make mistake.
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:
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



All times are GMT -6. The time now is 10:41 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.