those 2 methods allow to produce tubes with even internal diameter here I present next method that allows to produce tubes with even external diameter : 

3) we place wet fibers or pre preg fiber on latex core, then we push it inside our mould ( pipe) then it goes to the fridge to shrink the latex and allow to take out it and replace it with some kind of balloon which will push fiber againts the pipe. Might use 2 part expanding foam instead of bladder and after curing melt it out with acetone. 

Any other ideas ? 

Come on guys ! share some knowledge

Wojciech from Poland

~~~Everytime I hear sound of demoulding part I have eargasm~~~