Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Antique Tractor Paint and Bodywork

Does hardner get old?

Welcome Guest, Log in or Register
Author  [Modern View]

06-11-2012 15:13:09

Report to Moderator

I'm planning to paint a fender with Omni MAE and use Shopline JC661 clear over it using JH6680 Medium Topcoat hardner. I read in a thread by NCWaye in Tractor Talk that he refers to hardner that might be "out of date". I used half of my can of harder maybe three years ago and refilled the can with argon gas before screwing on the cap. How can I tell if it's still good or not good? Spray a test on an old barrel? The clear will never harden without hardner, will it? I don't see a "use before" date on the can.

[Log in to Reply]   [No Email]

06-18-2012 04:50:09

Report to Moderator
 Re: Does hardner get old? in reply to Unruh, 06-11-2012 15:13:09  
The PPG paint rep had told me that the way to know if it is alright to use after being opened for awhile is to take a look at the paint just after you mix the hardner in. If it starts to look in any way like cottage cheese, stop right there and throw it out before pouring it into your gun. If it mixes up like normal it will be fine. Again that's just what he told me. I have to admit, I have mixed together some PPG hardner that was probably nearing 3 years old once and it worked just like it should. But I could've just gotten lucky!

[Log in to Reply]  [No Email]

06-17-2012 21:31:26

Report to Moderator
 Re: Does hardner get old? in reply to Unruh, 06-11-2012 15:13:09  
Deep six it. As others said it cost a lot to do it right ONCE!

[Log in to Reply]  [No Email]
Loren in wi

06-14-2012 19:24:05

Report to Moderator
 Re: Does hardner get old? in reply to Unruh, 06-11-2012 15:13:09  
yes it has a shelf life after opening. The humidity that enters the can will cause it to not work. It is not that body shops are fussy it is that it has to have a chemical reaction to work right. I would suggest that you buy it in a small contyainer and use it up promply. 25 years of shop time sharing knowledge with you. It cost alot to do it once, what to try it twice?

[Log in to Reply]  [No Email]

06-14-2012 11:04:32

Report to Moderator
 Re: Does hardner get old? in reply to Unruh, 06-11-2012 15:13:09  
if it was something i wanted to look good.. i'd get a new can.. 3ys opened is a loooong time..

[Log in to Reply]  [No Email]

06-11-2012 17:19:15

Report to Moderator
 Re: Does hardner get old? in reply to Unruh, 06-11-2012 15:13:09  
I have used it a year old with gas in it and kept in the refrigerator without problems. My guess would be that it is still ok, but if mine I wouldn't risk it. I don't remember the numbers, but I think PPG says the shelf life unopened is 2 years, opened 2 weeks without gas. The 2 weeks is probably conservative, mainly there for body shops to reduce complaints, in my opinion.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

Home  |  Forums

Copyright © 1997-2016 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters