Star-shaped crazing :-(
Discussion
Not sure whether to raise this subject here, or in Bodywork and Detailing?
Anyway, I noticed yesterday that two star-shaped craze marks have appeared on my left-rear wing. I'm mortified because the paintwork is otherwise in reasonable condition apart from swirl marks.
What could have caused these? Does this look like somebody has opened their door against it - twice?
I have no experience of how fibreglass behaves, so I'd appreciate any pointers.
Will they spread, and is it repairable?
Anyway, I noticed yesterday that two star-shaped craze marks have appeared on my left-rear wing. I'm mortified because the paintwork is otherwise in reasonable condition apart from swirl marks.
What could have caused these? Does this look like somebody has opened their door against it - twice?
I have no experience of how fibreglass behaves, so I'd appreciate any pointers.
Will they spread, and is it repairable?
Edited by Dr Mike Oxgreen on Monday 31st January 12:27
Those are impact marks, the crack go full thickness of the gel-coat. Sometimes see this appearing for no apparent reason due to a quick repair job. You need to get all the way through the gel-coat and make sure the GRP is undamaged. Normal body filler to replace the removed gel-coat and paint.
I'm sure a ‘body shop’ person will be along soon to diagnose this better than I can
I'm sure a ‘body shop’ person will be along soon to diagnose this better than I can
Get in touch with Waxwork Jock.
He'll tell you all you need to know and should you require work carried out, he's very reasonable and his workmanship is second to none.
He'll tell you all you need to know and should you require work carried out, he's very reasonable and his workmanship is second to none.
Yellabelly said:
That looks as though you have something loose in your boot that has impacted the wing from the inside. There does not appear to be any external marks and the crazing is consistent with the wing being hit from the inside.
Interesting - my initial reaction was similar: to my untrained eye, it does look like it's been "prodded" from behind. But my boot really hasn't had anything in it heavy enough to have struck it with any force; in fact the boot has been mostly empty recently.I washed the car on Saturday, and I certainly didn't see the marks then - but I can't be totally sure they weren't there.
Last night I was wondering whether the escaped sump plug might have struck inside the wheel arch, but these two marks are too far back I think.
Quentin1 said:
Something flying around in the boot recently?
Nope.Besides, I don't think I buy the theory that something in the boot could cause such a pinpoint impact. The carpet on the side of the boot would dissipate the energy and spread it out, and also it would be bloody hard to get that much sideways G no matter how madly you drive!
You'll find this on just about every Griff in the world ( well all four of mine did and I've seen loads of others )on the NS rear wing level with the axle centre line
It's caused by putting the roof in the boot, it wedges against the inside of the boot in one position ( or two) and when you go over bumps etc clouts the boot from the inside
Solution -= get it fixed and get some foam or bubblewrap to protect the edge of the hood from clouting the boot
It's caused by putting the roof in the boot, it wedges against the inside of the boot in one position ( or two) and when you go over bumps etc clouts the boot from the inside
Solution -= get it fixed and get some foam or bubblewrap to protect the edge of the hood from clouting the boot
LordGrover said:
^^ 
Sounds feasible.
Don't buy into that theory, there are no such marks on my Griff, also the position on the wing would be difficult for the roof to cause such damage as the wing profile is curving away and the damage is about mid-panel. Sounds feasible. Quentin 1, try and keep up, I posted that idea two posts before you!
Edited by Yellabelly on Tuesday 1st February 00:42
Yellabelly said:
Don't buy into that theory
Me neither, unless I'm misunderstanding it. The roof section sits right in the middle of the boot, with acres of space between it and the side of the wing. I could imagine it damaging the boot lid, perhaps. Also, I'd expect the edge of the roof section to show some damage.I'm still wondering what the sump plug did on its way out. Pure speculation, but if it was thrown up by the rear wheel it would have been like a bullet. Wherever it struck the fibreglass, it might have sent shock waves through the wing, and perhaps these two points are very slight defects that have been there since the factory, waiting for their moment to show themselves...? I still can't shake off the thought that I didn't see these marks when I washed the car on Saturday, but there they were after the sump plug incident on Sunday. Could be coincidence, but...
Does anyone have a ball-park figure of how much it would cost to repair?
Dr Mike Oxgreen said:
I still can't shake off the thought that I didn't see these marks when I washed the car on Saturday............
Would you have seen those marks if the car was wet?Have you had the car long? I would go with the damage from the boot theory, maybe the previous owner hid the marks with some wax based product and with the extreme weather it has now become visible again.
In short I don't know but I might as well guess as everyone else is
I reckon that's been done from the outside. I'm probably talking b-----ks ! If you think about the shape of the panel, impact from the inside would cause very little flexing, but from the outside could be pushed in quite easily.
Where have you parked recently? (sorry if you have mentioned this). Could quite easily be a couple of thumps from the side of a hand or perhaps a knee.
Don't reckon it's your sump plug.
Roy
roysum said:
.......impact from the inside would cause very little flexing, but from the outside could be pushed in quite easily.
What if someone was carrying something odd shaped like a bike frame, that could easily knock it hard enough to do it and do it twice in roughly the same area. Looking at the carpet wouldn't tell you anything because it wouldn't show.Well, the car has had 5 or 6 owners in its life, so who knows - maybe one of those owners did carry something that has knocked the wing from the inside creating a couple of stress points that didn't show, and the cold temperatures have caused the paint to finally crack through.
Maybe its first owner kept a gimp in the boot, and the gimp tried to kick his way out?
Maybe its first owner kept a gimp in the boot, and the gimp tried to kick his way out?
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