Hello everyone, I am attempting to machine thin delrin shims using a "2 stage" hole saw and drill press.
I have tried different methods and drilling speeds but I'm encountering an issue where the outer hole saw leaves rough finish. The inner hole saw cuts fairly cleanly every time. Both hole saws are Dewalt brand with fine teeth. I've tried using drilling oils and compressed air to clear the drilling chips which has helped, but I still have rough outer edges which takes further trimming and just doesn't look very good.
I am looking for consistent cuts as I have a lot of these shims to make!
Any advice on other methods or tips to improve my process would be greatly appreciated. I have attached a few images to show what I am working with and the results I am trying to improve.
Thanks!
I have tried different methods and drilling speeds but I'm encountering an issue where the outer hole saw leaves rough finish. The inner hole saw cuts fairly cleanly every time. Both hole saws are Dewalt brand with fine teeth. I've tried using drilling oils and compressed air to clear the drilling chips which has helped, but I still have rough outer edges which takes further trimming and just doesn't look very good.
I am looking for consistent cuts as I have a lot of these shims to make!
Any advice on other methods or tips to improve my process would be greatly appreciated. I have attached a few images to show what I am working with and the results I am trying to improve.
Thanks!