Well, I have made three attempts at carving a Mt St Helens relief. So far, three failures, all associated with doing the needed file loads (three) and bit changes (one).
The last attempt, I at least got through the second pass with the 1.5mm radius tapered ball mill. However, GSender locked up its display at a 2% completion level. It continued to feed and run the GCode file to the end, but the display locked up my X, Y, Z position display and would not let me return the cutter to its zero position for the final finishing pass. So there are 1/4" end mill lines still visible in certain parts. The photos show the three attempts and the last attempt soaking in walnut oil for depth enhancement.
I should have never used this as my very first milling project. But I have learned a lot on the way.
I may try this one more time, but GSender has to not lockup when milling a 26MB file.