Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Antique Tractor Paint and Bodywork

Sealer??

Welcome Guest, Log in or Register
Author 
Mark/Ks

01-08-2008 16:46:44




Report to Moderator

Under what conditions does a person need to apply a sealer??? What is the function of the sealer??? How important is it's use?? Thanks..




[Log in to Reply]   [No Email]
B-maniac

01-08-2008 20:05:31




Report to Moderator
 Re: Sealer?? in reply to Mark/Ks, 01-08-2008 16:46:44  
Just to add a little to what CNKS said. Some will use a sealer when doing spot repairs to a large area and ending up with primered spots and original painted areas and they will spray a coat of sealer over the complete panel(s) to give one uniform surface for the top coat. Some will use a sealer because they cant seem to get a good uniform sanding job (lack of proper equipment,knowlege or time)and they know a coat of sealer will fill some of the sanding imperfections that would otherwise show up in their paint. (see crutch) Myself , I use a thinned coat of catylized epoxy primer as a sealer because it will bite into the sanded surface better than paint will and will provide , in turn , a non-sanded surface (chemical bond)to the paint coat sprayed over it. Chemical bonding is superior to mechanical (sand scratches). My rule is simple (but not cheap)any time you are faced with a mechanical bond (sand blasted or sanded surface)use the epoxy. Anything you apply over the epoxy then will be chemically bonded. A chemically bonded "sandwitch" is superior in durability , chip resistance and repairability. Do you NEED it on a tractor? No. Do you WANT it?? Sure you do. Can you afford it in a little extra time and money?? I'm definately not well off financially , but I figure if I can't afford to do this "hobby" the best then I shouldn't be doing it at all. Just a hang up that I have. Some call it "excessive/compulsive". It's still cheaper to paint something just once and enjoy it the rest of my life instead of looking at re-doing it in 5-10 yrs. Uh...what was your question again??

[Log in to Reply]  [No Email]
CNKS

01-08-2008 17:31:22




Report to Moderator
 Re: Sealer?? in reply to Mark/Ks, 01-08-2008 16:46:44  
A sealer keeps the underlying paint from lifting the topcoat. On old tractor paint this is unlikely. Anyway if you use epoxy primer it will act as a sealer. Otherwise, on tractors, forget it. Best to strip the old paint down to bare metal anyway, you should still use epoxy both for it's adhesion to bare (sanded) metal and to the topcoat or surfacer you put over it. However, there are certain DuPont paints that recommend a sealer over some of their products. I don't use DuPont, so can't tell you what they are. If in doubt, simply follow the manufactuers recommendations.

[Log in to Reply]  [No Email]
Mark/Ks

01-08-2008 17:53:13




Report to Moderator
 Re: Sealer?? in reply to CNKS, 01-08-2008 17:31:22  
CNKS,,, Is Epoxy primer still sandable??? On my first two paint jobs,, Not sure what primer I used, but it was a sandable primer... Is Epoxy good for both sheet metal and cast?? The sheet metal I will want to sand prior to topcoat. Again Thanks!!!



[Log in to Reply]  [No Email]
CNKS

01-08-2008 18:20:36




Report to Moderator
 Re: Sealer?? in reply to Mark/Ks, 01-08-2008 17:53:13  
True epoxy primer is not supposed to be sanded, it can be, but it easily goes to bare metal and does not sand smooth -- some people use the term "epoxy" in the wrong way. Put epoxy primer as the FIRST coat (or two coats) on everything you paint. Put a two part surfacer (requires a supplied air breathing system) over the epoxy on the sheet metal, not the cast, sand with 400 and reapply and sand until you are satisfied. Surfacer is sometimes called a "high build" primer, although it really isn't. If you don't have supplied air, use a sandable "primer surfacer", sometimes called a "lacquer" primer, the same way I described for the surfacer. These products are not as good as the 2-part (hardened) surfacers because they can bridge the deeper sanding scratches and can shrink after the topcoat is applied, thus revealing the sanding scratch. Do NOT use the 2-part surfacer or the single part primer surfacer on bare metal -- adhesion is poor compare to epoxy primer, particularly for the 2 part. Remember that epoxy primer usually has a 3-7 day window, depending on the particular product, during which it has to have topcoat or surfacer applie to it. If you are unable to meet that window you much scuff it with a scotchbrite pad and reapply. Epoxy primer is waterproof and can be left alone indefinitely, as long as you do not paint over it without the scuff/reapply procedure.

[Log in to Reply]  [No Email]
CNKS

01-08-2008 18:21:48




Report to Moderator
 Re: Sealer?? in reply to CNKS, 01-08-2008 18:20:36  
I hit "submit" before I corrected my spelling -- sorry.



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

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 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

Website Accessibility Policy