So I need to drill/bore a hole on a part that is quite large. So large it will not fit on the table so I have it positioned it on a stand next to the mill and have rotated the head 90 degrees and will use the quill to feed. My question is aside from oil not staying in the cups on the head, is there any possible other problems I may see? I assume this is done from time to time but have not encountered anyone doing it before. Should only be 15 min or less of actual cutting.
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Bport Series1 Head Rotated 90 Degrees, Any Negative Effects?
- Thread starter lindse34
- Start date
It seemed to work fine. Chattered more than I like but knew it was going to be difficult to keep things rigid. Annular cutters sure do make quick work of a large hole. As with many things it took 3 hours of setup for 5 minutes of cutting.
BTW this is an axle off a disk harrow that a hydraulic cylinder has pushed the split bushing through the backing material(mild steel) over the years. So the plan is to weld a 4130 insert in its place. The original deformation was larger than I thought and I wish I would have went another 1/8" larger in cutter dia. I'll probably build it up with 60k psi and re cut it.
![20150409_202554[1].jpg](https://www.hobby-machinist.com/data/attachments/56/56578-96d893e0cb63c257291ccb28385c3895.jpg "20150409_202554[1].jpg")
![20150409_202619[1].jpg](https://www.hobby-machinist.com/data/attachments/56/56579-31b14757cc9fe6ebc40cea3f66b7f1fe.jpg "20150409_202619[1].jpg")
![20150409_202608[1].jpg](https://www.hobby-machinist.com/data/attachments/56/56580-2903dab08254910e1904940b1a4b5206.jpg "20150409_202608[1].jpg")
![20150409_202637[1].jpg](https://www.hobby-machinist.com/data/attachments/56/56581-8e5e6156cebef79995a9d6dc92b15f77.jpg "20150409_202637[1].jpg")
![20150409_203947[1].jpg](https://www.hobby-machinist.com/data/attachments/56/56582-0e3a5a7cd1492a783f7835bdd6ccf8bb.jpg "20150409_203947[1].jpg")
BTW this is an axle off a disk harrow that a hydraulic cylinder has pushed the split bushing through the backing material(mild steel) over the years. So the plan is to weld a 4130 insert in its place. The original deformation was larger than I thought and I wish I would have went another 1/8" larger in cutter dia. I'll probably build it up with 60k psi and re cut it.