Ye Olde Rocket Forum - View Single Post - Brief Review of the Harrison Competition Fin Jig

Wolf — the mandrels from my Rose jig (from Geoffrey Kerbal's estate) fit my first-generation Harrison jig. I hope he's continued that to this new version.

Steve — my goodness, that's significantly revised, especially in the area that I have been most frustrated with on both the well used (and worn) Rose jig and the Harrison version: the platen adjustment. I asked (through my wife's Facebook account) if the new adjustment could be retrofit on the prior Harrison/Rose jig but looking at those pictures now, it looks like the answer is probably no.