Components Materials Used Dimensions Remarks
1. Lid Stainless steel (1 mm thickness) 260 mm (diameter) Cut out and folded to make a cover
2. Upper Cylinder Stainless steel (1 mm thickness) 300 mm x 790 mm Cut out and folded to form a cylinder of 250 mm diameter
3. Frustum Stainless steel (1 mm thickness) 195 mm x 790 mm Cut and folded to form a frustum of upper diameter of 250 mm and base diameter of 30 mm, height of 150 mm. The frustum joined to the upper cylinder at an angle of 50o.
4. Base Cylinder (outlet) Stainless steel 50 mm x 95 mm Cut and folded to form a cylinder of 30 mm diameter. Then welded to the base of the frustum.
5. Base PVC, motor and wire   PVC used to cover the motor, also as feed platform. The wire connects the base to the control box. The base was suspended to the feed hopper using copper wire.
6. Control Box PVC, veroboard, resistors, capacitors, transistors, relays, 555 timers, transformer, diodes and regulator.   PVC used for casing. The components were laid on the veroboard.
Table 1: Construction materials.