Subscribe for full online access and get...
- Full, instant access to all stories
- Customised email alerts straight to your inbox
- Monthly print magazine
11 May Scrapheap challenge. This week the teams have to build a wind powered coffee bean mill. The machine grinding the most coffee, by weight, in an hour, wins. Three mechanics from Suffolk take on three teachers from Wolverhampton. The losers win the 'has beans' trophy. Erm. . .