Variation vs mois dernier
19,9 k
Abonnés
+800
63,42 M
Vues
+4,57 M
8,94 k
Vidéos
+311
7,1 k
Vues / Vidéo
À propos de la chaîne
Hi there, my name is Jean Junior Lumbu (JJL)...currently living in South Africa. With my engineering background, in this channel I will assist people to stay fit with their mind by first targeting people who love math, physics, CAD drawing, and related subjects; then I will invite each curious and open minded person to discover about basics of Mechanical engineering, technology, physical-metallurgy, science, mathematics and technology related topics. As I long to share with you above stated I will urge you to subscribe to my channel and also to click the bell button so that you might be notified every time I post something on this channel. Will also share some sport events for entertainment' sake. Junior JJL
Les dernières Vidéos
PERFORMING IMPACT CHARPY TESTING IN METALLURGICAL LABORATORY FROM ROOM TEMPERATURE TO LOW TEMP
225 vues · 16/10/2026
TENSION TEST: ROUND TENSILE MARKING GAUGE & ELONGATION CHECK, ULTIMATE TENSILE STRENGTH (UTS); YIELD
1,05 k vues · 06/10/2026
HOW TO THROW HEAVY MANUAL PENDULUM FOR IMPACT CHARPY TESTING AT ROOM TEMPERATURE IN LABORATORY
2,43 k vues · 15/09/2026
PROCESS OF FITTING INDUSTRIAL UNDERGROUND MINING WINCH IN MANUFACTURING WORKSHOP FOR CONVEYOR BELT
506 vues · 27/08/2026
USING PARALLEL LATHE TO REPAIR WORN THREADS ON SHAFT AFTER MIG WELDING REPAIR IN MECHANICAL WORKSHOP
257 vues · 13/08/2026
ESSAI DE TRACTION: THEORY, PRATIQUE ET REEL. DÉTERMINATION DE FORCE MAXIMALE, L'EXTENSION, ÉLASTIQUE
615 vues · 28/07/2026
Les derniers Shorts
REPAIRING DAMAGED HYDRAULIC PISTON USING GRINDER TO CUT BENT ROD IN MECHANICAL WORKSHOP
15 vues · 25/10/2026
GAS METAL ARC WELDING PROCESS TO REPAIR CRACK ON CONCRETE MIXER TRUCK PUMP IN MECHANICAL WORKSHOP
1,02 k vues · 25/10/2026
ON UNIVERSAL MILLING MACHINE USING FRESE MAX IN PREPARING MACROETCH SAMPLE PRIOR EVALUATION IN LABS
5 vues · 25/10/2026
HOW TO KNOCK WORN BRASS SLEEVE FROM EXCAVATOR END BOSS IN MECHANICAL WORKSHOP USING HEAVY HAMMER
1,03 k vues · 25/10/2026
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