Stainless steel and polyester

[GeoffSChapman]

My customer wants me to stratify a stainless steel tube dia. 200mm through a polyester hull to accommodate a sonar.
Can I be sure that the polyester will really stick to the stainless?
Geoff

[yokebutt]

It won't, you need to "key" the tube to keep it in place.

[lewisboats]

Use epoxy to "glue" the two together.