PAINT ACRYLICS<ENAMELS - 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 01-09-2008, 11:54 AM
Registered User
 
Join Date: Feb 2006
Location: Hays Ks
Posts: 39
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
PAINT ACRYLICS<ENAMELS

I was talking with the owner of a small body shop the other day and he made comments on different paints and their compatibility. He said that he had alot of paints chemically tested? True or not i don't know. According to him a person can use any single stage urethane as a base coat, you leave out the hardner and use more reducer. let it flash for an hour or so after your last coat and clear over it?. Secondly he said you can change an acrylic enamel to a single stage urethane buy using a urethane hardner. He claims he had been doing it for years. I have heard and seen painters use single stage urathanes and mix a catylized clear to paint50/50 on the last two coats. They claimed it help hide any little imperfections and added depth to the paint job. I have seen that done in real life, but the converting single stages to bases and flip flopping hardners was a new one on me. SO i thought post a thread see if any of you guys new of some validity to all this or was I talking to a painter that has been playing with FIRE and just hasn't been burned yet!!. And I was just talking with Barry this morning and never thought to ask.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-09-2008, 12:15 PM
jcclark's Avatar
The Penny Pincher
 

Last journal entry: Hanging Bumpers
Last photo:
Join Date: Dec 2004
Location: Louisville, Ky. U.S.A.
Age: 61
Posts: 1,854
Wiki Edits: 0

Thanks: 4
Thanked 14 Times in 11 Posts
Urethane makes an excellent base coat, i use it that way.
But I always add the hardener. Otherwise you'll be painting clear over a
base that will stay soft. Don't do that.
Urethane colors are basically the same as urethane clear, so why
wouldn't they be compatible? They're the same-urethane.
I wouldn't use enamel though, you can, but it's much more risky.
Enamel stays soft forever, urethane can get rock hard in 24 hrs.
I prefer urethane as a base coat on a all-over paint job.
It's cheaper than base, it's a 2k product (that's a plus)
and I think they're right about the color being more intense or deeper.
The car in my project journal is urethane with a urethane clear coat,
I drive it daily.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-09-2008, 03:28 PM
Member
 
Last photo:
Join Date: Apr 2004
Location: Georgia
Posts: 3,573
Wiki Edits: 0

Thanks: 10
Thanked 57 Times in 36 Posts
Tough post to answer.
Let me put it to you this way and you decide for yourself what the answer is.

Most urethane single stages would be very close to a urethane clear that the company makes. Using the same resins, change the solvency around and adding dispersers for the pigment and you got it and normally beef up the solids.

So picture spraying 7500 or 7900 without an activator.

Could you thin 7900 that you are using to air dry? sure but I would guess it would be in the area 800-900% to get any good drying out of it and since there are 100's of resins to chose from you would need to know the physical make up of that resin. At a rate of reduction like that it would take a single stage color 10 coats to cover anything.

EDIT:
Just so you don't guess at the wrong answer, you may figure out the thinning ratio to make the resin dry but it will never be as hard or as stable as a base coat, although the resins may or may not be similar other resins are added to the base resins like polyesters and CAB's for drying purposes.
Not sure that was a great place to seek advice, even if it was free.

Last edited by BarryK; 01-09-2008 at 05:26 PM.
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
Paint Question #157 rj57 Body - Exterior 5 10-31-2007 02:20 PM
"Basics of Basics" Color Matching-Alternates MARTINSR Body - Exterior 2 02-03-2007 06:33 PM
what color to paint? jum Body - Exterior 14 07-30-2006 12:29 PM
wax and grease remover adrock430 Body - Exterior 14 07-30-2006 12:18 PM


All times are GMT -6. The time now is 01:23 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.