Re: General engraving / v-carving & profile cutting questions
I find Pine very difficult to get good results from on small letters and details. I would run a sharp bit speed very fast, and yes the 90 Deg bit might not go as deep. Try some sample cuts and see which way you want to do. I have large 48 inch long live edge walnut slabs that carve very nicely.
I always Zero off the top but thats just me. Once you zero the Z, at least on mine anyway I just load the next file zero the X & Y (if its changed) and Go. Your results may vary, please test on yours.
Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router Mach4 Kimber 1911 45ACP