I made some 1/4" plywood templates for parts of the hatch; one for the 4-internal hatch ribs and one for the 2-external hatch ribs. I also made two other templates, which will be used to build a curved jig to clamp and assemble the hatch in.
I've seen a few pictures somewhere of hatches being glued up and clamped in a curved jig.
I'm at the point to where it's time to trim the master template back 3/4" at the hatch location and after that's done, there will be no more easy referencing these templates to the master template and I've got a question...
Now I know these templates are only 1/4" thick, but I can easily spring them. (Simulating the dreaded hatch springback)
My goal is to have zero, nadda, no springback.
I wondered about taking these templates and putting a little reverse springback (1/4" maybe, because that seems to be about the average I hear builders say they got) and make new tighter templates.
Has anyone tried this or use this method in their builds?
As of right now, I'm ready to proceed and build to the prescribed curve, but thought it would be worth while to ask the question, because we all know there is no such thing as a dumb question, right?
I'm at a point where the switch would be easy... just thought I'd ask.
Build to the prescribed curve or tighten up the templates with 1/4" reverse springback?