BigSix wrote: Hi Bill, does it really need to be carbon reinforced PA6 ?
Usually PA6 (= Nylon) is a beast to destroy. ..
No it doesn't need the carbon fiber. It's just that the nylon filament we have contains carbon fiber. Parts printed with this filament come out looking sharp and as you say are "a beast to destroy".
I'm working in Montana this week so progress will be delayed a few days.