1. Cut steel square tubing to form the base frame: two long side rails (~600 mm) and two cross rails (~300 mm).
2. Weld the frame pieces squarely together to create a sturdy base.
3. Fabricate vertical supports from steel tubing or flat bar to hold pillow block bearings at both ends for each roller; weld firmly to the frame.
4. Mount pillow block bearings onto vertical supports; insert stainless steel rollers into bearings.
5. Attach sprockets to one end of each roller; ensure they align correctly.
6. Connect rollers with roller chain, looping over sprockets; adjust chain tension for smooth rotation.
7. Design and install a hand crank on one roller’s shaft, securing it with a key or set screw.
8. Create an adjustable roller gap mechanism using threaded rods and nuts connected to vertical supports and roller mounts; this allows fine tuning of pressure.
9. Weld a steel juice tray directly beneath the rollers, angled slightly to collect juice into a container.
10. Fabricate and attach a finger safety guard using steel mesh or perforated sheet around the roller area.
11. Smooth all welds and edges; clean and paint the frame with rust-resistant paint.
12. Add rubber feet to the frame’s bottom for stability and to protect surfaces.
13. (Optional) For motor upgrade: install motor mount on the frame, connect motor shaft to roller sprocket using a coupling or additional chain drive, and wire motor with appropriate controls.
14. Test the juicer by feeding sugar cane stalks through rollers, adjusting gap for optimal juice extraction without jamming.
15. Clean all surfaces after use; design allows easy cleaning with water and brush.