Improvements for this? The capital expenditure for any of it never pays
off,
so just forget about it.

Not necessarilly ... no one said you had to invest money to get access to
improved production equipment. Perhaps the production of parts needs to be
subcontracted to someone who has already invested the money in the equipment
for other reasons.


The main amount of manpower is needed AFTER the thing is demoulded -
finishing is quite a job, even for professionals.

Yep you are right !!