Cool concept, especially with water
To note: NHOL is most similar to IRON and other nonbrittle metals in that it is resistant to pressure, nonnonbrittle and holds elements. I was at a lost at what else to compare it to, as it is rather "generic" otherwise. Perhaps it was presumptuous? That said, the reason I did so was to provide my comments with symmetry, in that other variations of NHOL have been compared to elements, so why not this? Apologies if this offends anyone.
NHOL (Black Top) acts similarly to VOID. It, like NHOL (White Top), lacks the optical properties of the original. From these tests, it is my conclusion that, while "msasterisk" was correct that layering it would remedy gravitational anomalies arising from its construction, doing so is at the cost of its other properties, which may be useful.
NHOL (Original) acts most similarly to VOID, but also has novel properties, some only endemic to it. Its first noteworthy, and fundamental property, is that it has no gravitational field, unlike WHOL and BHOL. Other properties include an exothermic reaction to consumed materials, and aforementioned "anomalous optical properties", in that it refracts PHOT at right angles along its vertical edges.
NHOL (White Top) acts similarly to most metals, such as iron. Although, it is not electrically conductive. Nor does it have the anomalous optical properties of the original NHOL.
I found that the properties of the original were largely gone, apart from the gravitational property. The properties I observed are as follows:
A while back I found this save (id:1961382) and remembered it recently after a similar post made front page, to do with composite materials. As I was reading through the comments on the original NHOl save, I came across a comment by user "msasterisk", it recommended remaking the concept with the use of layering. This is exactly what I did, I layered the two and tested it with a variation upon which element was dominant.