[laweijfmvo]

I imagine that the clumps being discussed here are much smaller and much more electrostaticly attached than a NDT can deal with.

[searealist]

WDT would be an extremely obvious thing to test in both the original paper as well as the follow-up videos by Hoffman/Hedrick. It is absent in all three.

Also note that Hoffman found RDT only helped in _some_ grinders. WDT also only helps with some grinders.