another week of work, and I have come up with this! The new Personal Restraint System (PRS) harness! The harness will be either white or black, I just made this one blue so that it contrasts better with the white parts or Krayne's skin while still matching his color scheme.
Also, its hard to tell but there is extra padding. I posted a different color scheme preview in Scraps here:
http://www.furaffinity.net/view/33494729/

I made a big change to the thigh cuffs, making them only buckle in the front and be completely free in the back. The old style of thigh cuff was too bulky, and because it attached in the front AND back, it severely limited mobility. Now, with this new design, all of your weight is supported by the straps going up and down in front through to the thong-sling style of thigh cuff so when hanging, weight can be taken off the crotch by lifting legs and "sitting" in it.
I have tried a similar design with real straps so I know it works, but I haven't actually made this specific design to test.

This is only one part of many more. Underneath the harness will go a rubber sort of leotard, and it will be sewn or bonded to the harness so that it is all one garment.

I know I promised closeups of the Diaper Changer, but I wanted to get this finished first. This has some custom buckle designs, and I will put it all together in a general A.R.C. Tech file that wil alsol go over the Nanozipper and the SWIPE mentioned in my story.

Rendered in Blender 2.81, this time using Cycles and the new AI denoiser. It still took longer than eevee, but WAY faster than cycles WITHOUT AI denoise!

Full size high framerate version available to all patrons on Patreon here:
https://www.patreon.com/posts/30893427
The mp4 file is "attached" to the post just under the description text.