I dont really know how FRAY works i sparked it and nothing happened
I'm not sure if you can spark FRAY directly, I think you need to channel the spark through PSCN/NSCN/INST/etc.
Draw some fray. Heat it (the hotter it is, the more powerful it is). Put a movable thing above fray. Draw some pscn below the fray. spark the pscn.
There you go.
This is an example of a FRAY powered gun. Turn of deco layer and study it.
Thanks,the problem was I did not heat if first.