A small saw tooth type jig attachment could be used to hold the half frames in place with the gantry, sorry I didn’t think of it sooner.Half frames and cant frames also benefit from an upright or Hahn style jig to hold them in place until the glue dries. One disadvantage of the gantry style jig.
Hi Lawrence,Hello Mike
Just found your new POF build, you sure are moving along at a great pace and doing a great job on your ship. Sure do like all of your new shipyard tools and along with Mike 41, you are off to a flying start. I am at a bit of a standstill at the moment as I have just realized that I need a mill in order to do a half decent job on the Scarf Joints. It should arrive next week, I hope. Still building rib frames and slowly sawing them out, it looks like this will be a long-term build for me, ENJOY.