You're absolutely right when you said few people know the many uses of the grinder. But what you didn't recognize is that you're a machinist with many kinds of tools, machines and measuring tools. The many of us are trying to be hobbyists. So try not to compare us with the professional.
It would be better to clean and polish the valves with a small sanding drum. This is to avoid scratch marks around the stem. Such scratches are a potential starting point for cracking and subsequent breaking.
Посмотрела, весь ролик до конца, без перемоток. А где шлифовка????? Шлифовка - это процесс обработки заготовки или предворительно изготовленной детали, с выдерживанием, довольно жёстких параметров размера и чистоты!!! Всё, что показано на видео - зачистка, шкурение и к шлифовке, не имеет ни какого отношения!!!
i dont think so . He said "few people know" . This is hidden knowledge that only he and a couple of his friends know about. These are tools that He himself has invented and the rest of the tool and die makers, machinists and moldmakers will someday catch up to him.
Usá guantes de seguridad, no toques la máquina antes de que se detenga completamente. Lo que hiciste a partir de 2:16 es peligrosísimo. Demasiados malos ejemplos para mi gusto.