Underground beer cooler DIY

Cooling drinks even without access to electricity.   Bill of Materials (Hardware Required) To complete this project, you will need the following non-printed parts:  *1x PVC Pipe:** 1 meter long, 200 mm diameter (acts as the outer ground sleeve). *1x Threaded Rod:** M10, 1 meter long. * **M10 Nuts:** 2 pieces per tray (one for the top, one for the bottom to lock the tray in position). *Washers:** Max 25 mm outer diameter (2 pieces per tray, top and bottom, to reinforce the printed parts and distribute weight). *I filled the bottom of the shaft with gravel. Cover