hi! 

I had a problem trying to cover with carbon the tailgate of my citroen C4

Before applying the black gelcoat, sand it and clean it thoroughly, then apply and let dry carbon, after 3 days drying, I began to smooth the carbon layer, but note that in an area came as a bubble, but it was the carbon that had taken off from the part

Now already removed all carbon, and sanded again, but the layer appeared after removing the carbon is not the same as that in the first sand

As I can do to cover this piece? had planned to do with polyester?

See if you can help




Thanks

Sounds like your epoxy coat did not bond to surface,or when you layed down your fabric that area did not stick down,on flat area use a consolidating roller and make sure fabric is sticking to the epoxy.