My Shapeoko XL arrived last month. My 11 year old daughter and I quickly got to work putting it together. We ran into a few bumps in the road getting it together, but got through it. I see that the new directions have filled in the previous gaps. I have run the Hello World several times getting a feel for how things work.
Then I was intimidated by how to hold things down. Finally settled on Rockler T-Track and clamps. I installed those this week. Now, after a month of being too scared to actually cut anything I have got to make myself do this. I intend to make Christmas ornaments out of 1/4" King Color Core. I know from their sheet http://www.kingplastic.com/wp-content/uploads/2014/05/CNC-Engraving-King-ColorCore.pdf that I want to use a v-bits at 20,000 RPMs, 150” per minute and a maximum of 0.1” of an inch deep per cut.
Now my question. What is a plunge rate and how do I decide what to set it as? Also Stepover, what should it be? My settings so far .5" V, Depth per pass .1", Stepover .225, Spindle speed 20k RPM, Feed Rate 150 ipm, Plunge Rate______.
My machine waiting to be used with some 1/2 King Color Core at the ready. (After this photo the plastic protection coating was removed from the bit.)