I tested another high end mill and want to share the fantastic results. The geometry is specially designed to lower the cutting force and I gave it a try. I can do DOC of 3mm and stepover of 1,4mm without any chatter on the Nomad. Here are the facts
—> A picture of the mill. I generally found out, that a thick shaft increases the performance and offsets the low torque of the Nomad (Physics: Mass that already turns wants to keep turning…and the shaft is a massive increase of mass…)
To be fair, the coatings wear off after the first few minutes…When I was a machinist, we’d get those coated endmills, and they would wear out faster then the uncoated, because they coat the cheaper endmills.
Just finished the part and wanted to share a short clip about the project.
Durability of the mill was great, did the entire roughing with one mill (~5 hours). Coating started to wear down after around 3 hours, but F&S were unchanged until the end with no problems.