What thickness? The thin stuff for model rockets (Apogee, ASP, etc) can be cut with a scissors or paper cutter. Thicker stuff is best cut with a power tool. Could be a band saw, scroll saw, table saw, or even a router (Dremel, Rotozip, or full size). But G10 or other fiberglass dust is very bad both for your eyes/lungs AND for your power tools. Wear appropriate protection, and use something to control the dust. Any power tool where the dust can get into the tool *WILL* be destroyed by repeated use. Either have a vacuum connected to immediately remove the dust, or use a tile wet saw to do the cutting. A good tile saw will run you $500-1000, so this is only an option for soemone like a manufacturer.
Any one know how someone like PML cuts their fins? Sheet metal shear? Milling machine?
Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD!