I liked t' Estes EPM-010 enough that I decided t' build an upscale o' it.  Decidin' that t' -010 could be reference t' t' nearly 1" diameter main tube, matey, t' upscale t' a BT-60 main tube becomes t' EPM-016.  Main fins are 1/8" ply, tabbed through t' t' 24mm mount.  T' fore fins are balsa, as be t' nose cone and transition.