The suggested settings also immediately snapped the bit.
MeshCAM doesn’t seem to allow me to select a custom tool to compare the numbers but for the #122 tool the numbers are completely different.
MeshCAM
Feedrate - 64mm/min
Plunge Rate - 8mm/min
RPM - 10000
Carbide Create
Feedrate - 246.380mm/min
Plunge Rate - 30.797mm/min
RPM - 4688
I don’t understand how the the two different programs can calculate such different numbers?