| 摘要 |
<p>Support frame is used for clay models to produce plaster moulds for casting heads or busts. It comprises a base plate, in the centre of which is a support rod arranged so that it can be removed by pulling it through the plate. Spacing sleeves and support elements are positioned around the rod which pref. consists of several sections. Withdrawal of the rod and detachment of the base plate from the plaster and clay allows easy clay removal.</p> |
