I DIY'd a very similar topology with air insulation a few years back when I was in my home brew cable phase. The build was straightforward; clear poly tubing plus acrylic spacers and some solid conductors. Probably <$100 all in for a set of 3m cables.
I abandoned this project for unrelated reasons, but with a couple of unresolved concerns. First, the surface area of the spacers touching the wire isn't large but also isn't zero so does that limit the benefits of using air as an insulator in a meaningful way?
Second, how was I going to avoid humidity in the cable (and tarnish buildup on the conductor). My shop wasn't exactly a lab grade clean room and this seemed like the biggest hurdle to overcome to achieve a viable application.
Third, I used a fewer number of spacers, which meant a fewer number of crossing points, so I was worried about inductance, but had planned to resolve that once I get past the POC.
Anyway, hats off to them for what looks like a nice build. Hopefully they will be demo'd at a show and I can hear how the pros do it.
I abandoned this project for unrelated reasons, but with a couple of unresolved concerns. First, the surface area of the spacers touching the wire isn't large but also isn't zero so does that limit the benefits of using air as an insulator in a meaningful way?
Second, how was I going to avoid humidity in the cable (and tarnish buildup on the conductor). My shop wasn't exactly a lab grade clean room and this seemed like the biggest hurdle to overcome to achieve a viable application.
Third, I used a fewer number of spacers, which meant a fewer number of crossing points, so I was worried about inductance, but had planned to resolve that once I get past the POC.
Anyway, hats off to them for what looks like a nice build. Hopefully they will be demo'd at a show and I can hear how the pros do it.