Dear Collegues

I try to overcome the surface porosity of my prepreg detail (or decrease the quantity) and I need to know what does "spiking the 1st ply prepreg" means. Could you please tell me what it is? Maybe there is some video with it?

Thank you

Bob

Not a bloody clue and I have been doing this 35yrs
Where did you hear it and it what context ????

Never used this myself but I believe it refers to "perforating" the prepregs with a needle roller prior to the layup to improve air evacuation.
But i honestly cannot see that making much of a difference at all. Debulking between layers with an adequate perforated release film should do the job just nicely?

https://pdfs.semanticscholar.org/1d8d/eaf59eaadccbde3f2be3fbe884ad76d2bea8.pdf

I guess you are quite close to the main idea.