Depreciation is a term relevant to valuing assets and liabilities on the balance sheet and P&L accounts. oliwarner's figures are cashflow figures, a completely different kind of account, which is what you look to when asking how much financing is needed, a key factor in whether the purchase is given the go-ahead.
I'm not. I'm assigning a 15y lifespan, building in maintenance into the running cost and assuming we just run it into the ground; buying another every 15 years.
Year 1 is so high in the in-house models because that's what's paying for the machine.