Hi folks.
I need to repair a cracked CF part (automotive rear spoiler /wing) and prefer to seek some wisdom before I start the job.
The crack seems to be on the surface, but I am not certain if it has gone through the part (I do not want to pressure it to make it worse).
There are in fact 2 cracks - one larger exposed one and another hair line crack below (see image)
Unfortunately this part is NOT accessible from behind as it is one closed piece.
I am thinking of sanding the crack with a small file by hand rather than using a Dremel not to risk cutting through it.
Then filling the crack with a clear lower viscosity epoxy resin (using a syringe) and then polishing it.
Any other alternatives to this ? I am concerned with cracks growing so I have considered drilling small holes on their ends to prevent further opening.
Does this method (often used in metal) also work for Carbon Fiber ? (See image)
I also will need to fill the holes afterwards.