Outsource

Outsourcing deep hole drilling is different from outsourcing standard machining. The cost of a mistake — wrong tooling, inadequate coolant pressure, insufficient experience — is higher because the part is often 80% complete when the hole is drilled. I have worked with dozens of deep hole drilling vendors over the years. Here is how I evaluate them. What to Include in Your RFQ An incomplete RFQ produces an inaccurate quote. The vendor cannot price the job correctly without knowing all the requirements. ...

I have been on both sides of this decision. I have set up in-house gun drilling operations and I have sent work to specialized shops. Both are the right answer in different situations. The decision comes down to four factors: volume, diameter, depth, and how much your time is worth. When In-House Makes Sense In-house gun drilling works best when the conditions are right for it. Here is what I look for: ...