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David G

Well-known Member
I had a good weekend learning G code, got the simple stuff down now. I do not need to worry about making parts fast, and do not have an automatic tool changer. On my first round of coding, I just started on the part from left to right, but there were some operations I skipped because of tool change required. I am going to start programming and do all the operations that require one tool, then change tool and do next round. I also want to take a small drill and pre-bore any holes, as I can then check it for accuracy, and the plunge milling really likes the pilot holes anyway.
 
You mentioned predrilling to check locations. I suggest using a combination drill also known as a center drill, such as a # 4 unless you mare doing an extremely small hole then a smaller size
 
Are you able to use any canned cycles ? If not maybe you can write some sub-programs to be called up when needed often . A canned cycle for milling a circle with a ramp-on/off radius is nice, and saves doing a lot of trig. calculations.
 
If your software is capable of 3 axis programing skip the drilling and ramp mill the bores to rough them out. Then go back and finish the bores using cutter compensation to control size. Plunge milling with an endmill is not the way to open a hole and is harder on your machine.
 
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