 Highlights for NM, thick point nanosheets, point NSS, are electrochemically grown on T-substrates for hydrogen evolution reactions. Highly uniform point NS surface coverage with an ultra-low loading of 0.015 mg.cm-2 is achieved. 99.5% catalyst savings and about 237-fold higher catalyst utilization are demonstrated. This article was authored by Lei Ding, Ji Chiang Xia, Shuyu, and others.