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Author unsealing headlight glass/plastic
Ben G
Member
Registered: 12th Jan 07
Location: Essex
User status: Offline
2nd Dec 07 at 18:38   View User's Profile U2U Member Reply With Quote
whats the best way of doing this? tried hairdryer and it softens the sealant but still feels very hard to remove.

not putting in the oven.
ed
Member
Registered: 10th Sep 03
User status: Offline
2nd Dec 07 at 18:39   View User's Profile U2U Member Reply With Quote
Use a bonfire then.
Ben G
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Registered: 12th Jan 07
Location: Essex
User status: Offline
2nd Dec 07 at 18:39   View User's Profile U2U Member Reply With Quote
don't be a twat...

i'm not using the oven incase it melts my plastic headlight. thought that would be obvious?
ed
Member
Registered: 10th Sep 03
User status: Offline
2nd Dec 07 at 18:41   View User's Profile U2U Member Reply With Quote
You do it in the oven. A hairdryer is hardly going to do shit.
Ben G
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Registered: 12th Jan 07
Location: Essex
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2nd Dec 07 at 18:42   View User's Profile U2U Member Reply With Quote
how do i know it isn't going to melt the headlight though
ed
Member
Registered: 10th Sep 03
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2nd Dec 07 at 18:43   View User's Profile U2U Member Reply With Quote
Pretty obvious really? Don't put the temerature up high enough to melt the plastic. You do that by starting at maybe 50 degrees and going hotter until you can get the sealent apart. Don't just stick it in at 250 degrees.
Ben G
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Registered: 12th Jan 07
Location: Essex
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2nd Dec 07 at 18:44   View User's Profile U2U Member Reply With Quote
it's not obvious to someone who's never done it before and has no idea of plastic's melting temperature.

think i'll just stick to buying a new headlight if it's going to be hard
ed
Member
Registered: 10th Sep 03
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2nd Dec 07 at 18:52   View User's Profile U2U Member Reply With Quote
Well if you think about how hot the air is coming out of the hair dryer, then you can roughly guess what temperature to start with in the oven can't you? You know that the hair dryer didn't melt the plastic.
James_DT
Member
Registered: 9th Apr 04
Location: Cambridgeshire
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2nd Dec 07 at 18:55   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Ben G
it's not obvious to someone who's never done it before and has no idea of plastic's melting temperature.

think i'll just stick to buying a new headlight if it's going to be hard

As a guide, ABS has a melting point of around 105 degrees celsius so don't go too high. I don't know what the covers for headlights are made of, though.
The oven's the way to do it though, just don't go mad. If you're buying a new unit anyway, might as well give it a shot.

[Edited on 02-12-2007 by James_DT]
Ben G
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Registered: 12th Jan 07
Location: Essex
User status: Offline
2nd Dec 07 at 19:38   View User's Profile U2U Member Reply With Quote
i'll try tomorrow after work, as if i do it tonight and fuck up, there's no way i'll be going to work at 5:45am tomorrow

 
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