I am building a TF Folke Wulf 190D. The plan suggests the use of milled fibreglass mixed with 30 minute epoxy to provide a strong connection between the fuse and stab.
The local hobby store is presently out of milled fibreglass.

Is the use of milled fibreglass required to strengthen the connection?
The hobby shop suggested the use of micro balloons - does this increase the strength?
I have never seen milled fibreglass. Will shredding fibreglass and mixing with epoxy produce the same result?

Neil