If you use a pillow case, how then, do you propose to keep the (Heavy) weight of the sodden rope
, balanced in the machine? Especially when it comes time for the machine to spin?
What you're saying about ropes possibly damaging the machine makes sense. Although it's not one I've encountered in washing several thousand miles of lines. But I'm a bit at a loss as to how to keep things balanced if using a pillow case.
Unless, that is, you sew one into a donut shape, with heavy Velcro around it's radius, for inserting, & sealing of the line. And then, drop the whole thing over the center spindle of the machine. - Thoughts?
Also, to be clear, I stated to stay away from fabric
softeners. That, & to use very mild soaps/detergents. So as not to wash off/out the Samthane/manufacturer's proprietary line coatings. The ones which keep the fibers & jackets tight, & also work to enhance abrasion & UV resistance.
They're what makes rope
shiny, & extra slippery when it's new. Gradually wearing off with time, & work cycling.
That, & with some types of ropes, these "coatings" actually assist in bonding the core
to the cover (of a rope). So that if you wash them out of the rope, or damage them, it grows significantly weaker.