Quote:
Originally Posted by Jaguartvr
… I think if you do do the 7mm cut it could well cause stress fractures or cracks in the outer skin. If I do resort to cutting a slot to massage the lower edge in I will do I think 3 separate slots to spread out any stress. I also think that just one large cut could also result in a feelable (if that makes sense) line in the outer panel. This would probably show after it was painted…
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Jag - Sorry I meant to reply to this earlier, but forgot.
However, seeing you mention it again on the "SWB Crack" thread reminded me.
From my limited fibreglass experience, the key to a good join seems to be tackling it from both sides.
Here is an example of my Before, During & After work on one of my wheel arches.
There is no "feelable" line in any part of the wheel arch above.
And here is some more detail of the process I used taken from a different arch…
The inside of all the joins are covered in fibreglass matting.
Then the outside of the joins are ground out to be much wider, in a very rough "V" shape.
So that when extra matting is added on the outside, they cover the both sides of the original fibreglass and the join.
The arch above, is still work in progress and more matting needs to be added.
But by the time a layer of fibreglass filler and then "normal" filler are added, the joint should be "as good as new". <
Touch Wood >
Hope that helps, Paul.
