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Using the ARC function on a DRO

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springcrocus:
Post deleted, poor information provided. Sorry for wasting everyone's time.
Steve

Sanjay F:

--- Quote from: springcrocus on September 28, 2025, 10:59:25 AM ---Many of you will be comfortable using the ARC function on your DRO's for forming radii or creating a circle of holes.

Regards, Steve

--- End quote ---

errrrrr............I wish I was, I need to learn how to do this. Just wandering if there's a Youtube video or something more understandable tan the manual?

Jasonb:
For simple stitch drilling like you have shown it is far simpler to just use the PCD function with a bit of maths or CAD to work out how many holes you need to do for them to just overlap, yes I like them to overlap then the waste just drops out. For a semicircle just start at 0deg and finish at 180deg. or whatever orientation you need such as 30 to 210



When I have used the ARC function I have been able to use the same 0,0 as the ctr of the and then cut each quadrant from that same centre simply buy choosing one of the eight options, no need to setup for each quadrant. There are 8 different options, not really needed for stitch drilling but when you are milling they have different directions for each of the four pairs so you can cut from the top down or side up.

With a small stepover you can mill a shape like this with a flat ended cutter

springcrocus:
Well, what with Sanjay preferring YouTube and Jason effectively trashing my work, I think I will give it a miss in future. I'm obviously not very good art this lark.
Regards, Steve

samc88:
Very interesting thanks Steve. I'm yet to try the arc function and this write up is much clearer than the manual I have

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