So I (finally!) found some diamonds.
Got excited that I could build an MFE for the first time.
Ran back to my house.
Built one up.
Set about rejigging my solar array so I would be able to add more solar panels.
Hook up the MFE and the solar panels.
Immediately blow up my macerator and extractor with a stack of coal dust and rubber in respectively.
Edit - aaaah so annoyed at myself right now. Misjudged a jump from a height into some water and died, all my equipment fell into deep water. Reclaimed my batpack and bronze sword but lost my nano boots and electric wrench. Carried on searching because I really didnt want to lose those. Accidentally drowned and couldn't find my bat pack and bronze sword again <_< grrrr