doing a project in 19mm Baltic Birch.
Started using a .25 two flute straight bit at 3IPS @ 15000rpm,that bit lasted 20 minutes.I noticed the bit showed signes of overheating.
Switched to a .25 up spiral same rpm but 2.5 IPS,that bit lasted 15 minutes.Rechuck another upspiral and slowed it down to 13000 rpm.and finished the toolpath.
I'd would use a larger bit but don't have the room.
Any suggestions on IPS & RPMs with 19mm Baltic Birch.
I just ordered some .25 compression & down spiral bits so I'd like them to last longer