Thanks Tom for that solution! basically gave up on 3D PDF's, will give them another try.
Too bad I can’t see a way to “like” the original post. This is good to know.
Hello Tom.. got me thinking... and did recall one which may be useful alternative..?
..and this one... maybe?
oh,.. yes,... if you have not tried/seen this one... it was feature rich a few years ago... so.. maybe another option..?