Best Bit?

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Retired 1st Sgt
Posts: 44
Joined: Tue Jun 24, 2014 3:58 pm
Model of CNC Machine: Laguna IQ

Best Bit?

Post by Retired 1st Sgt »

While doing 3D, I typically use a 1/4 ball nose for roughing and finishing. I have my feed rate at 60 and plunge rate at 40. My step over is 10%. Is there a better bit or way to make my final cut show more detail?

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Rcnewcomb
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Re: Best Bit?

Post by Rcnewcomb »

Is there a better bit or way to make my final cut show more detail?
For finishing preview it with a 1/8" or a 1/16" ballnose. If it is noticeably better then you may need to use a smaller bit for the finish toolpath.

The nice thing about the preview is you can try it with various bits and then decide which bit is best for your project.
- Randall Newcomb
10 fingers in, 10 fingers out
another good day in the shop

martindg
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Re: Best Bit?

Post by martindg »

I typically use a 1/4" ball nose for roughing with the feed set to around 120-150 and haf that for plunge rate and a stepover of 40-60%. For the finish path I will typically use a 1/8" tapered ball nose adjusting the feed rate to get a good chip load (again around 120 - 150 ipm) and, more critically, reduce the stepover to 8-10%.. If I need better detail I will go to a 1/16" tapered ballnose

Retired 1st Sgt
Posts: 44
Joined: Tue Jun 24, 2014 3:58 pm
Model of CNC Machine: Laguna IQ

Re: Best Bit?

Post by Retired 1st Sgt »

Thanks for the tips.

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