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LEGACY DATA
We have tested a range of tools with a variety of common materials. We experimented with different feeds and speeds, and settled on some ballpark starting points. This data is intended for a new SmartBench user.
The figures shown below are starting points, and you must be able to adjust from these points as required! There are many factors that can have an impact on your feeds and speeds:
Material
Cutter (type, material and sharpness)
Desired surface finish
Desired accuracy
CNC machine characteristics
Extraction performance
Workholding
All of the values in our lookup tables are given using climb milling, so if you need to use conventional milling, then we would recommend reducing your feed rate by around 30% as a starting point.
If you are using a down-cutter you may wish to reduce your feed rate slightly as these cutter types do not help with extraction as much as an up-cutter
If you are having issues finding the correct feed-rate while cutting small circles take the below feed-rate (for softwood only, hardwood will work correctly) and take it down to around 25% ~800mm/min to reduce the tool deflecting on the constant direction change
YetiTool Part Number
Diameter (mm)
Shank (mm)
Type
Maximum Step Down/Step Over (mm)
Recommended Feed rate (mm/min)
Recommended Spindle Speed (RPM)
20805
3
8
Upcut Spiral
1.5
2,000
19,100
20806
6
Upcut spiral
2,500
21,000
20807
4
3,000
23,000
20813
3.2
Round Nose
1.6
20814
V-Groove
2
3,500
300
400
600
20538
6.35
0.8
460
17,200
20815
18
ACM
800
For HPL, you must use a coated cutter to stop the tool from blunting.
N/A
Coated upcut sprial
3000
22,000
Elliot. is the author of this solution
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