Which part of *your* build leaked the most money?

[Swarfing]

Most worry about building the machine first before the furnishings (steppers, drivers, bearings). Wood, steel and aluminium is cheap in comparison to the trinkets.....Biggest cost i would say is leadscrews and bearings if you want to do it right. But you can always save on these things by lowering your expectations of what you want......Ying/Yang??????????