Lines on part

[platonas1]

Hello all,

I am trying to machine a half cylinder but as you can see in pictures the result is not smooth, there some lines on the part (marble), I tried various toolpaths and using 4.5 mm of endmill.

 

Any ideas please?

[#Rekd™]

Please attach your valid Mastercam file. 

[Guest]

Use a ballnose endmill .

[BSmith23]

First, I am going to make a few assumptions, that you are using either Waterline, Scallop, Equal Scallop, Raster, or Hybrid.  For this I would use Waterline or Scallop.  Equal Scallop would be okay but takes a long time to process.  I rarely use Hybrid.

 

Next, make sure you are using a ballnose or bullnose endmill, depending on which tool path you use.  If using Waterline, us a bullnose.  If scallop, use a ballnose.  Raster would be okay to with either tool.  Do not use a Sharp Corner endmill!

 

If using Waterline, check the Add cuts box on the Cut Parameters page, to add minimum stepdown and max stepover.

 

If using Scallop, make sure Expand inside to out is checked on Cut Parameters page.

 

When you verify, no matter what you do, it will look like there is steps.  But the real look of the part may look nice and shiny.

 

Just my thoughts.  100 ways to do most anything.

 

Brent

[cncappsjames]

I would use flowline because I can dictate scallop height over the whole surface thus providing a more uniform surface finish. Flowline is superior to the other paths mentioned in this respect.