Tooling Specs.
Our chip load chart is ONLY A STARTING POINT for selecting a feed rate.
The chip load refers to the amount of material removed by the tool's edge during cutting. Calculating the chip load is essential in the quick and efficient set-up of machinery.
TOOL
DIAMETER |
HARD WOOD |
SOFTWOOD PLYWOOD |
MDF/ PARTICLE
BOARD |
1/8" | .003"-.005" | .004"-.006" | .004"-.007" |
1/4" | .009"-.011" | .009"-.013" | .013"-.016" |
3/8" | .015"-.018" | .017"-.020" | .020"-.023" |
1/2"+ | .019"-.021" | .021"-.023" | .025"-.027" |
TOOL
DIAMETER |
HIGH PRESSURE LAMINATE |
PHENOLIC/ PAPERSTONE |
SOLID SURFACE |
1/8" | .003"-.005" | .002"-.004" | |
1/4" | .009"-.012" | .004"-.006" | .006"-.009" |
3/8" | .015"-.018" | .006"-.008" | .008"-.010" |
1/2"+ | .023"-.025" | .010"-.012" | .010"-.012" |
TOOL
DIAMETER |
HARD PLASTIC |
SOFT PLASTIC |
ACRYLIC |
1/8" | .002"-.004" | .003"-.006" | .003"-.005" |
1/4" | .006"-.009" | .007"-.010" | .008"-.010" |
3/8" | .008"-.010" | .010"-.012" | .010"-.012" |
1/2"+ | .010"-.012" | .012"-.016" | .012"-.015" |
RPM Formulas
Chip Load = Feed Rate (inches per minute) / (RPM x number of flutes)
Feed Rate = RPM x number of flutes x Chip Load
RPM = Feed Rate / (number of flutes x Chip Load)
Metric Conversion: Divide inches per minute by 39.374
The calculations from these formulas are for the material thickness of average size for cutting tool length. These calculations are only recommendations and do not accommodate all circumstances.
Therefore, tooling damage may still occur, and the use of these calculations does not warranty against tool damage.
Selecting an RPM
Selecting the lowest RPM possible for each application is ideal for reducing wear on cutting tools. Armada recommends 10,000 and 20,000 revolutions per minute (RPM) when using the majority of our cutting tools. As you know, the higher the RPM, the cleaner the finished cut. It is important to remember the higher the RPM, the more friction on the tool, causing excess wear on the cutting edge.
MATERIALS
Armada Tools manufactures all the cutting tools using submicron-grain carbide to extend the sharpening life. Armada submicron-grain carbide provides better rigidity and is extremely heat resistant when used for high-speed applications.
MATRIX COATING
Add matrix coating on any Armada Cutting Tools. Prevent edge build-up and resist sticking with this coating. Matrix coating is precisely engineered to create a longer life by about 30-40%.