We are a small and new workshop and we recently have been asked for a quote on a relatively high number of steel parts to do some operations on them.

I have found some formulas on internet to be able to determine the operation costs that takes in account a solid carbide end mill that gives good results.

My question is, when doing operation cost calculation, in the case of an end mill with inserts what is to be taken in consideration on cost calculation? Is it enough to take in consideration the cost of one insert or I should take in consideration the total cost for all the inserts that equips the insert end mill?

The situation is that I'm using an end mill for planar milling that has 7 inserts (each insert has 14 indexable cutting edges) and I want to know how can I make the operation cost calculation. One insert costs around 10e, for per operation cost calculator should I take the tool cost as 10e/14(cutting edges) or should I take 10e/14 X 7 inserts and use this value in operation cost calculation? What should be the correct way on doing this?

Thank you.