I bought the lecablocks on January 4, 2018, and also started the thread because I was wondering how I could cut the lecablocks neatly, easily, and cheaply.
The day after, I contacted my relative and asked if I could stop by the concrete factory and get it fixed. He said yes, and I then posted about going to the concrete industry so no one would need to engage further in the thread.
The concrete factory was large, dark, and quite dirty. Cutting lecablocks neatly was no problem for a professional with professional equipment. Additionally, this was both free and easy for me.
Then I spray-painted the lecablocks and wrapped them in gumminät (non-slip). The best and cheapest speaker stands.