The Ford Barn

wrndln · 07-21-2018, 10:59 AM

I am wondering if using some valve grinding compound under the heads when tightening screws like open vehicle stanchion screws, molding screws for example would help or prevent the paint from chipping. A little compound could be applied under the head and then tighten the screw loosely and unscrewed it several times to "grind" some of the paint away. I had an unfortunate experience when I tried to install the rear window frame in my 28 coupe and the paint chipped badly when I tighten the screws to install the frame. I know that applying less paint around the screw holes would help, as Brent Terry told me, but sometimes that can't be done or wasn't done. I have also heard that using some plastic under the screw head would help prevent chipping, like Jim Brand told me. It seems like auto paint tends to chip fairly easily and I don't want to have to repaint parts if the paint chips when tightening the various screws on my vehicles when installing them. I am looking for some good advice from people that have encountered this concern before and found a good solution to paint chipping. Any helpful input would be appreciated.
Rusty Nelson

Russ/40 · 07-21-2018, 11:28 AM

The paint pros would tell you a properly applied finish won't chip. Meaning the substrate primer very minimal, but I'm with you, easier said than done.

I have had some success with those beveled stainless washers that are almost invisible. Similar to the ones on the lug nut holes, but much smaller. They come in many sizes.

J Franklin · 07-21-2018, 11:30 AM

I use a bit of grease under the head and it helps.

Brentwood Bob · 07-21-2018, 01:47 PM

Toilet paper. Spell check is not cooperating. It doesn't like just tp.

Oldbluoval · 07-21-2018, 02:48 PM

Vaseline lightly or
If your good with an exacto knives whittle out particularly on countersunk holes

ursus · 07-21-2018, 02:52 PM

Sponsored Links (Register now to hide all advertisements)

Dab on a bit of anti-seize.

zzlegend · 07-21-2018, 03:02 PM

----

Tinbasher · 07-21-2018, 09:02 PM

A bit of soap or grease under the head. I had a friend of mine that built show cars and he said he's trick was to tighten each fastener 1/2 a turn a day until tight. Must have worked as he won Pebble Beach 3 times.

BILL WILLIAMSON · 07-22-2018, 09:04 AM

REALLY SMALL rubber "O" rings, placed on the screw threads, will do the job.
Bill Simple

gustafson · 07-22-2018, 05:27 PM

with the use of a high quality paint this problem will not occur

wrndln · 07-22-2018, 05:55 PM

I am not sure I believe you gustafson. I am using high quality paint! It is PPG Concept or DuPont ChromaPremier depending on the color. It will still chip if you aren't careful when installing screws. I have painted a fair amount and I know paint will chip.
Rusty Nelson

gustafson · 07-22-2018, 07:43 PM

i don't think it is a matter of belief, but experience and application.
We use nothing but PPG and have never had this happen.
proper prep and quality paint is the key

Russ/40 · 07-22-2018, 09:07 PM

Doesn't matter what paint you use. If you have a thick substrate ( surfacer) it will chip out if it's too thick.

Building surfacers are part of the prep mentioned above. Excessive will chip.

dumb person · 07-23-2018, 04:47 AM

I thought beeswax was pretty good for this.

J Franklin · 07-23-2018, 11:43 AM

Beeswax is good but all our bees are dying out.

07-21-2018, 10:59 AM	#1
wrndln Senior Member Join Date: May 2010 Location: Lakeville, MN Posts: 5,162	Preventing paint chipping when tightening screws I am wondering if using some valve grinding compound under the heads when tightening screws like open vehicle stanchion screws, molding screws for example would help or prevent the paint from chipping. A little compound could be applied under the head and then tighten the screw loosely and unscrewed it several times to "grind" some of the paint away. I had an unfortunate experience when I tried to install the rear window frame in my 28 coupe and the paint chipped badly when I tighten the screws to install the frame. I know that applying less paint around the screw holes would help, as Brent Terry told me, but sometimes that can't be done or wasn't done. I have also heard that using some plastic under the screw head would help prevent chipping, like Jim Brand told me. It seems like auto paint tends to chip fairly easily and I don't want to have to repaint parts if the paint chips when tightening the various screws on my vehicles when installing them. I am looking for some good advice from people that have encountered this concern before and found a good solution to paint chipping. Any helpful input would be appreciated. Rusty Nelson

07-21-2018, 11:28 AM	#2
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Re: Preventing paint chipping when tightening screws The paint pros would tell you a properly applied finish won't chip. Meaning the substrate primer very minimal, but I'm with you, easier said than done. I have had some success with those beveled stainless washers that are almost invisible. Similar to the ones on the lug nut holes, but much smaller. They come in many sizes.

07-21-2018, 11:30 AM	#3
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,961	Re: Preventing paint chipping when tightening screws I use a bit of grease under the head and it helps.

07-21-2018, 01:47 PM	#4
Brentwood Bob Senior Member Join Date: May 2010 Location: brentwood, ca Posts: 4,240	Re: Preventing paint chipping when tightening screws Toilet paper. Spell check is not cooperating. It doesn't like just tp.

07-21-2018, 02:48 PM	#5
Oldbluoval Senior Member Join Date: Jun 2015 Location: Signal Mtn, TN (SE TN) Posts: 2,370	Re: Preventing paint chipping when tightening screws Vaseline lightly or If your good with an exacto knives whittle out particularly on countersunk holes

07-21-2018, 02:52 PM	#6
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,374	Re: Preventing paint chipping when tightening screws Sponsored Links (Register now to hide all advertisements) Dab on a bit of anti-seize.

07-21-2018, 03:02 PM	#7
zzlegend Senior Member Join Date: May 2010 Location: Reseda, Calif. Posts: 2,188	Re: Preventing paint chipping when tightening screws ---- Last edited by zzlegend; 07-22-2018 at 07:35 AM.

07-21-2018, 09:02 PM	#8
Tinbasher Senior Member Join Date: May 2010 Location: Innisfil, Ontario Canada Posts: 1,174	Re: Preventing paint chipping when tightening screws A bit of soap or grease under the head. I had a friend of mine that built show cars and he said he's trick was to tighten each fastener 1/2 a turn a day until tight. Must have worked as he won Pebble Beach 3 times.

07-22-2018, 09:04 AM	#9
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: Preventing paint chipping when tightening screws REALLY SMALL rubber "O" rings, placed on the screw threads, will do the job. Bill Simple __________________ "THE ASSISTANT GURU OF STUFF"

07-22-2018, 05:27 PM	#10
gustafson BANNED Join Date: Oct 2017 Posts: 128	Re: Preventing paint chipping when tightening screws with the use of a high quality paint this problem will not occur

07-22-2018, 05:55 PM	#11
wrndln Senior Member Join Date: May 2010 Location: Lakeville, MN Posts: 5,162	Re: Preventing paint chipping when tightening screws I am not sure I believe you gustafson. I am using high quality paint! It is PPG Concept or DuPont ChromaPremier depending on the color. It will still chip if you aren't careful when installing screws. I have painted a fair amount and I know paint will chip. Rusty Nelson

07-22-2018, 07:43 PM	#12
gustafson BANNED Join Date: Oct 2017 Posts: 128	Re: Preventing paint chipping when tightening screws i don't think it is a matter of belief, but experience and application. We use nothing but PPG and have never had this happen. proper prep and quality paint is the key

07-22-2018, 09:07 PM	#13
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Re: Preventing paint chipping when tightening screws Doesn't matter what paint you use. If you have a thick substrate ( surfacer) it will chip out if it's too thick. Building surfacers are part of the prep mentioned above. Excessive will chip.

07-23-2018, 04:47 AM	#14
dumb person Senior Member Join Date: Apr 2011 Location: South pacific island Posts: 1,724	Re: Preventing paint chipping when tightening screws I thought beeswax was pretty good for this. __________________ <Link> This is how we roll<Link> "I'm Convinced that no one really reads posts anymore; they just fabricate what they think the post says then ramble on about red herrings."--Bob Outcasts rules of old cars #1 Fun is imperative, mainstream is overrated #2 If they think it is impossible, prove them wrong #3 If the science says it impossible you are not being creative enough. #4 No shame in recreating something you never had #5 If it were not for the law & physics you would be unstoppable

07-23-2018, 11:43 AM	#15
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,961	Re: Preventing paint chipping when tightening screws Beeswax is good but all our bees are dying out.