So they bought a small seed press which could extract oil from the rapeseed at room temperature. This process used minimal energy and no chemicals. The result, a pure plant oil which they could run their machinery on, was a great result. However, there was a problem… all the husk left over from the press.
Because they hadn’t used solvents or chemicals, there was still oil left in the husk which had a high energy density. Jon and Colin decided to try making a solid fuel from the leftover husk, pressing it together to make an alternative to wood and coal.
After much searching, Colin found a bespoke, perfect-for-the-job press that was manufactured in the UK. This press produced Green Dragon briquettes, a similar size but a viable alternative to a wood log…burning beautifully as an economical and sustainable British produced solid fuel.