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Posted a lot
"If in doubt, flat out!"
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Mar 14, 2006 10:11:53 GMT
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Right, why do i have to weld patches over my holes, and not just fiber glass them? Not talkin about structural stuff, but the hole in the nose cone for instance. Why does every one weld a plate over instead? Can you not get a finish as smooth with the f'glass? I know its strong. Just couldn't work out why it wasn't used more.
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1988 V8 Rangey Bobtail :: 1968 Volvo Amazon 133 Ratrod :: 1977 Land Rover 88 :: 1985 Opel Monza GSE :: 1983 MKII Fiesta
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Weld vs Fibre GlassBenzBoy
@benzboy
Club Retro Rides Member 7
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Mar 14, 2006 10:34:57 GMT
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I think it's just that 'glassing over holes is a bit "cowboy"... I'd sooner cut out the grot and buzz a plate in the hole really - once you've chopped out the rust it's just as easy to cut a patch out and weld it in - much less mess than fibreglass, and you'd still have to finish it off with a skim of wag no matter which way you go about it
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Mar 14, 2006 10:35:12 GMT
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I'm guessing that it's down to material properties. Metal to metal is always going to be best, as is fibreglass to fibreglass. If the hole was large, and you glassed it, the glass would flex more than the surrounding metal, which could cause the paint to crack around the repair. You'd get away with glassing small holes, but I'd still prefer to weld a patch in.
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Peugeot 307sw - Suzuki SV650S - MX5.
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Mar 14, 2006 10:40:40 GMT
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My reason for not fiberglassing things, is because its so half-assed to me that i would lose sleep over doing it ;D
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том
Posted a lot
"If in doubt, flat out!"
Posts: 2,707
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Mar 14, 2006 10:43:27 GMT
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hehe, fury muff ;D
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1988 V8 Rangey Bobtail :: 1968 Volvo Amazon 133 Ratrod :: 1977 Land Rover 88 :: 1985 Opel Monza GSE :: 1983 MKII Fiesta
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Mar 14, 2006 10:48:40 GMT
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Stuff it full of gnosh.
If you're not looking for a concours piece of perfection, make life easier for yourself.
That said, if it's a large area, or a known rot trap better off doing it properly.
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Weld vs Fibre GlassBenzBoy
@benzboy
Club Retro Rides Member 7
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Mar 14, 2006 10:51:18 GMT
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I've glassed over holes before, in hard to reach places where I'd end up welding on my back. But if I'm doing it anywhere on the outer body I'd sooner weld it - fibreglass splinters itch like a bee-hatch! Then again arc-eye ain't that pleasant either... ;D
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Mar 14, 2006 11:56:47 GMT
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I've glassed over holes before, in hard to reach places where I'd end up welding on my back. But if I'm doing it anywhere on the outer body I'd sooner weld it - fibreglass splinters itch like a bee-hatch! Then again arc-eye ain't that pleasant either... ;D I`ve combined the 2 - got arc eye while using GRP Was using a UV curing GRP with a very high powered UV light and got it so bad it stuck my contact lenses to my eyes - now that hurt
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Mar 14, 2006 12:07:57 GMT
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Amazing how many areas of the csmetic bodywork are actually considered structural, especially if you have weld on wings etc.
plod doesn't hold up really. It cracks, shrinks, falls out and rust continues merryly behind it leaving you with a bigger hole to deal with.
Mind you a badly welded repair will also have most of the same problems.
IMO the only proper repair is a butt welded full seam repair (or a spot welded on replacement panel) but thats not always practical or feasible.
Depends what you're doing and why. Are you making the car back to as good as it ever was or are you tarting something up so it looks a little prettyer for the last couple of years of its life? Or maybe something in between
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1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1994 Ford Fiesta
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том
Posted a lot
"If in doubt, flat out!"
Posts: 2,707
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Mar 14, 2006 12:10:41 GMT
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i'm gettin it thought the MOT at the end of next month. Then with a full MOT on her, i'm sandblasting her back down to metal, and sorting everything out properly. Re-doing the chop if i have to.
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1988 V8 Rangey Bobtail :: 1968 Volvo Amazon 133 Ratrod :: 1977 Land Rover 88 :: 1985 Opel Monza GSE :: 1983 MKII Fiesta
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том
Posted a lot
"If in doubt, flat out!"
Posts: 2,707
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Mar 14, 2006 12:11:37 GMT
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(maybe after RCS)
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1988 V8 Rangey Bobtail :: 1968 Volvo Amazon 133 Ratrod :: 1977 Land Rover 88 :: 1985 Opel Monza GSE :: 1983 MKII Fiesta
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Mar 14, 2006 12:54:55 GMT
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NOTE: IN 1987 TWO PEOPLE WERE BLINDED FOR LIFE DUE TO THIS!
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Mar 14, 2006 14:20:37 GMT
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If you are planning on keeping the car for a long time I would recommend doing it properely. If you are planning on keeping the car for a long time but you are going to treat it to a full on resto in the future then bodging it for the time being shouldnt be a problem. Fibreglass should only really be looked on as a temporary repair not permanent. That being said if its a non structural area and if the rust is fully cleaned off, then fibreglassed then the area rustproofed primed and painted there is no real reason why it cant last as long as steel.
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Mar 14, 2006 14:27:27 GMT
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If the panel is bolt on /not structual (and car is in daily use/ not a concours job) see if a Fibreglass panel is available for it. www.smithanddeakin.co.uk/index.htmCheaper and no rust (but long term paint application can be a problem sometimes).
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Mar 14, 2006 14:50:32 GMT
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if you're just doing it to please the MoT man then fibreglass it, then you've not wasted time when it comes to sandblasting the lot and doing it properly. i fibreglassed the massive hole in the wing on my quattro cos the MoT man thought it looked dangerous (well, it was big enough to get your fist through....). no filler, no paint, just a few blobs of fibreglass and back to the mot station. still tacky during the retest
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Never trust a man Who names himself Trevor. Or one day you might find He's not a real drug dealer.
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Mar 14, 2006 15:49:09 GMT
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NOTE: IN 1987 TWO PEOPLE WERE BLINDED FOR LIFE DUE TO THIS! Wouldn`t be surprised as it didn`t half hurt ! Managed to get my lenses out but took the top layer of skin off my eyes The really painful bit was as it was growing back though ... One of the many and varied injuries I got while working for my Dad ..
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том
Posted a lot
"If in doubt, flat out!"
Posts: 2,707
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Mar 14, 2006 17:05:19 GMT
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cheers guys, really helpfull, thanks ;D
Twincam, great link, thank you. They do the the parts i need, wing and nose cone/front panel, at a fraction of the price of metal, but they are both still £77.75 and £133.75 respectivly. So not cheap, is it gonna be worth it or will it just be a longer term temporary measure?
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1988 V8 Rangey Bobtail :: 1968 Volvo Amazon 133 Ratrod :: 1977 Land Rover 88 :: 1985 Opel Monza GSE :: 1983 MKII Fiesta
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Mar 14, 2006 17:42:16 GMT
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Here's my view on it: When you fibreglass or fill a hole the rust gets under the glass resin and eventually you have a bigger hole underneath. What I've done for the lip around the boot, it will be an impossible repair, so I ground off all the rust with the brush on the grinder and painted the remains with 2-pack. Then I glassed the lip on top of that. The way I see it is the 2-pack will stop the rust completely and the glass will hold up forever. It's only a lip that pushes into a soft seal to stop the water coming in so I reckoned it would be ok. Generally though I'd weld a piece in and make the shape up with filler.
If you do it properly and it doesn't affect the strength of the car I don't see how it's a bodge.
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Last Edit: Mar 14, 2006 17:44:20 GMT by Deleted
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Mar 14, 2006 17:58:33 GMT
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cheers guys, really helpfull, thanks ;D Twincam, great link, thank you. They do the the parts i need, wing and nose cone/front panel, at a fraction of the price of metal, but they are both still £77.75 and £133.75 respectivly. So not cheap, is it gonna be worth it or will it just be a longer term temporary measure? I thought that someone on the VOC forum was selling some secondhand steel ones for even less than that?
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том
Posted a lot
"If in doubt, flat out!"
Posts: 2,707
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Mar 14, 2006 18:00:08 GMT
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yes, they are, which i'm also takin into account, but he's sellin 2nd hand metal, so i'd need to see the condition.
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1988 V8 Rangey Bobtail :: 1968 Volvo Amazon 133 Ratrod :: 1977 Land Rover 88 :: 1985 Opel Monza GSE :: 1983 MKII Fiesta
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