Share 'Deadeyes for dyneema rig tension?'

Bonjour, Did some of you tried to use deadeyes to tension Dyneema shrouds on a Tiki 21 ? I tried to make some out of plywood, three layers of 6mm and glued with epoxy, but I am a little concerned about the tension they can hold. Is there an alternative to plywood deadeyes for such small boats? What do you use on your own shrouds? With thanks and regards, Éric