I'm planning to reuse a sumpguard mould that was made for wet layup so doesn't have flanges for vac bagging.
I didn't want to weld the flanges on as it may distort the mould so instead I planned to usePU adhesive to attach the flanges leaving a small recess which I could then fill with silicon as IME epoxy resin doesn't release well from PU adhesive.

Any different views or advice before I do this?

Thanks
Stuart