Fitting fender cup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Fbks_Cruiser** · 01-29-2021, 08:45 PM

Well, just like everyone else who has done this job, I found that the fender cup patch fit like crap. So, I thought I would share how I am going to tackle it.

I first cut off the minimum amount of the original fender necessary to get to good metal - pretty much where everyone cuts em. I then rough trimmed the patch panel and laid it up against the fender to see how bad it was and found the 1/2” too small problem. But it appeared as though if I just added a 1/2” to the full patch top to bottom as others have done that the curve of the fender lip/wheel opening arch looked goofy - too vertical. So, I made a cardboard template of the good left fender and laid it along the fender I am repairing. Sure enough the bottom tip of the fender cup was about where it should be but the top along the splice is off.

So, I cut a pie-wedge out along the back edge to stretch it like in the picture. I think it will be okay. Doesn’t have to be perfect as this is an old fender I got from the wrecking yard for free. It was pretty dented up. I figure it is a good project to hone my metal bumping and fab skills on and hasn’t cost me anything but a bunch of my time and a patch panel.

I’ll post more after I get it welded on

68Gold/white · 01-29-2021, 09:30 PM

Looks great to me!
Thanks!
I have a couple to do!

Roostre · 01-29-2021, 11:04 PM

Looks almost exactly how I did mine. Hopefully that means mine is right! The only difference is that the curve on the front of mine was off too, so that's where I took my pie cut from.

tinman_local2 · 01-29-2021, 11:24 PM

The last one I did fit pretty good. Took a little adjustment, but did not have to cut any pie pieces. It was Tri-Plus brand. I've had really good luck with their stuff. I may post some pictures tomorrow if I get time.

**Fbks_Cruiser** · 01-31-2021, 11:25 PM

Finished up the metal work today. Almost filler free repair. I think it came out okay for my first attempt at welding in a patch panel.

**Getter-Done** · 01-31-2021, 11:40 PM

That looks Great .

.

chewychevy67 · 02-01-2021, 02:21 PM

That looks very nice.

**Rich72C10** · 02-01-2021, 03:26 PM

it always impresses me what you guys can do with metal. I wished I had skills/talent like that!

Roostre · 02-01-2021, 03:26 PM

Well done. I hope mine ends up half that good.

darkhorse970 · 02-01-2021, 04:19 PM

Very nice repair! I’m about to do one of them myself. Thanks for the pics!
Posted via Mobile Device

sick472 · 02-02-2021, 04:05 PM

Fantastic for your first patch, truely!...it would easily compete with my 10th. Nice exercise of patience isn't it?

01-29-2021, 08:45 PM	#1
Fbks_Cruiser Senior Member Join Date: Apr 2016 Location: Fairbanks, AK Posts: 334	Fitting fender cup Well, just like everyone else who has done this job, I found that the fender cup patch fit like crap. So, I thought I would share how I am going to tackle it. I first cut off the minimum amount of the original fender necessary to get to good metal - pretty much where everyone cuts em. I then rough trimmed the patch panel and laid it up against the fender to see how bad it was and found the 1/2” too small problem. But it appeared as though if I just added a 1/2” to the full patch top to bottom as others have done that the curve of the fender lip/wheel opening arch looked goofy - too vertical. So, I made a cardboard template of the good left fender and laid it along the fender I am repairing. Sure enough the bottom tip of the fender cup was about where it should be but the top along the splice is off. So, I cut a pie-wedge out along the back edge to stretch it like in the picture. I think it will be okay. Doesn’t have to be perfect as this is an old fender I got from the wrecking yard for free. It was pretty dented up. I figure it is a good project to hone my metal bumping and fab skills on and hasn’t cost me anything but a bunch of my time and a patch panel. I’ll post more after I get it welded on Attached Images __________________ 1972 GMC K2500 Super Custom Matt Last edited by Fbks_Cruiser; 01-29-2021 at 10:00 PM.

01-29-2021, 09:30 PM	#2
68Gold/white Registered User Join Date: Sep 2011 Location: Ark City, Kansas Posts: 3,324	Re: Fitting fender cup Looks great to me! Thanks! I have a couple to do!

01-29-2021, 11:04 PM	#3
Roostre Registered User Join Date: Dec 2018 Location: St. James, MN Posts: 163	Re: Fitting fender cup Looks almost exactly how I did mine. Hopefully that means mine is right! The only difference is that the curve on the front of mine was off too, so that's where I took my pie cut from. Attached Images

01-29-2021, 11:24 PM	#4
tinman_local2 Registered User Join Date: Jul 2015 Location: Smithton, Mo. Posts: 158	Re: Fitting fender cup The last one I did fit pretty good. Took a little adjustment, but did not have to cut any pie pieces. It was Tri-Plus brand. I've had really good luck with their stuff. I may post some pictures tomorrow if I get time.

01-31-2021, 11:25 PM	#5
Fbks_Cruiser Senior Member Join Date: Apr 2016 Location: Fairbanks, AK Posts: 334	Re: Fitting fender cup Finished up the metal work today. Almost filler free repair. I think it came out okay for my first attempt at welding in a patch panel. Attached Images __________________ 1972 GMC K2500 Super Custom Matt

01-31-2021, 11:40 PM	#6
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 8,013	Re: Fitting fender cup That looks Great . . __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

02-01-2021, 02:21 PM	#7
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,453	Re: Fitting fender cup That looks very nice.

02-01-2021, 03:26 PM	#8
Rich72C10 Mr. Cheyenne Join Date: Jun 2020 Location: Kyle, Texas Posts: 1,688	Re: Fitting fender cup it always impresses me what you guys can do with metal. I wished I had skills/talent like that! __________________ Richard *'72 Chevy C10 Cheyenne Super WHT/MED BRONZE/WHT SBC 350 \| TH350 \| LWB \| AC \| Buddy Seats Upgrades:** Tilt \| Front Sway Bar \| Radio \| Sliding Window \| Bed Spare w/Lock Bed Rails \| Full LEDs \| Courtesy Lights \| Tachometer \| Glovebox Lock & Light \| Head Light Relays \| *Upgraded Fully Super Trim

02-01-2021, 03:26 PM	#9
Roostre Registered User Join Date: Dec 2018 Location: St. James, MN Posts: 163	Re: Fitting fender cup Well done. I hope mine ends up half that good.

02-01-2021, 04:19 PM	#10
darkhorse970 Registered User Join Date: May 2009 Location: Monroe, LA Posts: 2,103	Re: Fitting fender cup Very nice repair! I’m about to do one of them myself. Thanks for the pics! Posted via Mobile Device

02-02-2021, 04:05 PM	#11
sick472 Registered User Join Date: Jul 2015 Location: Sedalia Mo. Posts: 1,131	Re: Fitting fender cup Fantastic for your first patch, truely!...it would easily compete with my 10th. Nice exercise of patience isn't it? __________________ He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20

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