I recently did an upgrade on my Shapeoko XL to the HDZ with 2.2KW Spindle and new belts as well. Looking forward to upgrading to aluminum waste board soon. I was wondering if anyone used Half inch cutters with this or is the machine rigidity not enough to handle that for 6061 Aluminum. So far I been using a 3 flute 1/4 end mill and my adaptive are 0.25 DOC and 0.025 WOC with a 1-2 thou chip load with no real issues but as soon as I increase the DOC to 0.35, it starts struggling.
Any advise? Thanks!!