|
Regardless which method is used to fix the crack, I think it's important to look at why it cracked in the first place.
From my experience, graphite is pretty tough stuff to a point.
I think the cone may have been bonded to the surround in a non-stress free state, ie it was forced into compliance at that interface, putting it under stress it shouldn't have been under.
I would fix the crack using as little 'glue' as necessary to bond the edges of the cone together in a stress free state as possible. To me that would mean just adding 'glue' to the crack without actually touching it, just let the 'glue' fill the crack as is. After it has set, I'd bond the cone to the voice coil if it's detached there at all, and let that cure. Then I'd move to the surround part and 'glue' the cone to it, again not touching it if possible, just 'bridging' the gap such as it is.
__________________
Scott
'78 SC mit Sportomatic - Sold
|