JAK VYROBIT JÁDRO? Odlévání barevných kovů do formy s jádrem.

Today I would like to introduce you to the production of oil sand cores. In my opinion, it is the simplest core that can be made at home without the use of any special preparations, devices or machines. Don't forget to subscribe, like and ring the bell to notify you of a new video. You can support my work at: SUBSCRIBE:    / janbradac   INSTAGRAM:   / janbradac_bradac3d   FACEBOOK:   / bradac3d   E-SHOP: http://www.bradac3d.cz #jadro #core #tools #jaknato