J,C engineering and technical drawing

J,C engineering and technical drawing.
[founded by OTOKPA JOHN]. this is a channel for academic platform, for educating engineers and technical student on practical ways of construction, including CRAFT.
it features
geometrical construction,
conic section,
principle of tangency,
loci,
orthographic projection,
assembly drawing,
ART AND CRAFT.
PVC PIPE ART AND CRAFT.
etc