Filling Rust Pock Marks??

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
User avatar
501 Club
501 Club
Posts: 1430
Joined: Fri Mar 15, 2013 9:46 pm
Zip Code: 12009
eBay ID: kepara
Skype Name: ken.rau.57
Tractors Owned: 1929 Farmall Regular (Original Owner)
1942 Farmall M #55654
1948 Farmall Cub #21005
1955 Farmall Cub #190769
1961 Cub Cadet #16509
1975 Cub Cadet 1250H
197x IH 990 Haybine
1994 JD 5320 Diesel
Attachments: Woods 42F Fast Hitch, L38 Disc Fast Hitch, F11 Plow Fast Hitch, Land Plow, Snow Plow, Grader Blade, Planter w/Fertilizer, Cultivators, Hilling Disks, Sickle Bar Mower(2), IH 7' Sickle Bar Mower, Flail Mower and 5' International Belly Mower.
Circle of Safety: Y
Location: Altamont, NY

Filling Rust Pock Marks??

Postby PVF1799 » Sat May 18, 2013 8:32 pm

Hi all - Back from a week long business trip.

I got to cleaning the paint and rust off the fuel tank and hood. The vast majority of the sheet metal is in great shape. Where the paint has been gone for a while, the sheet metal is pock marked. Not deep, but obvious. Now here's the question.

Do you fill those small dimples with ???? or do you prime and paint?

Pleasant View Farm - Est. 1799
My Restoration Project - FCUB '48 - Rex

User avatar
ricky racer
5+ Years
5+ Years
Posts: 3911
Joined: Wed Sep 12, 2007 8:40 pm
Zip Code: 49120
Circle of Safety: Y
Location: Niles / Buchanan, Michigan

Re: Filling Rust Pock Marks??

Postby ricky racer » Sat May 18, 2013 8:47 pm

I used a Bondo style body filler on the bigger pits and glazing compound on the smaller stuff. Welcome back. :wink:
1929 Farmall Regular
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub

User avatar
Bus Driver
Team Cub Mentor
Team Cub Mentor
Posts: 2917
Joined: Sat Feb 11, 2006 5:26 pm
Location: NC

Re: Filling Rust Pock Marks??

Postby Bus Driver » Sat May 18, 2013 8:50 pm

Al the rust must be removed. Spot grind the dimples. If very deep, fill with Bondo and file/sand smooth. Prime with sandable primer. Fill any low spots with glazing and spot putty-- give it plenty of time to dry. Wet sand with 600 grit, but not to sand through the primer. Prime again with sandable primer. Fill any low spots again. Lightly prime again. Then fog on a contrasting sandable primer, gray over red or vice-versa. Sand lightly. Any high spots will cut through the last primer first, indicating the remaining low spots.
Just how far you go with this process is up to you. The more, the better.
Luck favors those who are prepared

5+ Years
5+ Years
Posts: 429
Joined: Sun Jan 20, 2008 5:52 pm
Zip Code: 44491
Tractors Owned: 52 Cub, 42 Farmall H 49 Ford 8N (FIL's tractor) and a yard full of implements for them 51 Chevy 3100 PU
Circle of Safety: Y
Location: West Farmington, OH

Re: Filling Rust Pock Marks??

Postby tinnerjohn » Sat May 18, 2013 10:19 pm

You might check with your local automotive paint supplier. I used a product called "Feather-Fill" on my H and the wife's 8N. Its a thick, fast drying primer made for filling scratches and pock marks. John

Rob in NH
10+ Years
10+ Years
Posts: 2376
Joined: Sun Oct 03, 2004 7:11 am
Zip Code: 03848
eBay ID: panelbeata
Tractors Owned: 1947 circle cub
1950 cub demonstrator
1957 cub
1967 cub
Circle of Safety: Y
Location: NH, Kingston

Re: Filling Rust Pock Marks??

Postby Rob in NH » Sun May 19, 2013 8:40 am

if you can sandblast the rust that would be the best way to prep for the next step. if you can't sandblast, clean it up the best you can and use something like rust mort. its seals it up so then you can skim coat it with your body filler. then you can prime and paint.

User avatar
5+ Years
5+ Years
Posts: 786
Joined: Sat May 07, 2011 8:20 pm
Zip Code: 27526
Tractors Owned: 1950 Cub Demo
1978 Cub Cadet 1650
cub 193 plow
cub 174 planter
cub sidedresser
cub 144 cultivator
cadet 50a deck
60A grader blade
Circle of Safety: Y

Re: Filling Rust Pock Marks??

Postby clodhopper » Sun May 19, 2013 9:15 am

Rob in NH wrote:if you can sandblast the rust that would be the best way to prep for the next step..

This would be ideal. Blasting would remove the rust from the pitted areas and make it ready for body filler. Again, depending on the finish desired, see the previous posts.

5+ Years
5+ Years
Posts: 328
Joined: Wed Mar 16, 2011 3:31 am
Zip Code: 21853
Circle of Safety: Y

Re: Filling Rust Pock Marks??

Postby rexxon » Mon May 20, 2013 10:16 am

After I cleaned mine up, I treated it with OSPHO, then filled everything. My dealings with those rust dimples is if I do not treat with OSPHO or something similar, the rust will pop back out. Last one I did was stored in an old chicken house so you can imagine the rust pitting but after using OSPHO I have not needed to redo anything.

  • Similar Topics
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: Garvin Gatewood, jh60 and 6 guests