On my side, I didn't test the vespel yet, my setup is not failing, even in an enclosure..
I'm planning heavy printing soon, so we'll see if I need it! If I don't need it, I will be happy to send the vespel to someone who needs it.
Here's something I'm currently designing and will be printed soon (home made bearings, electroformed plastic and hopefully diy hydraulics (I'm trying to polish an ABS copper-electroplated liner that will fit in my cylinders) )
Here's my enclosure setup btw, I will need ventilation for the bottom PCB. (I still don't understand why the red tubing of my MK6 is not failing)