Another plaque for Art's stairwell perhaps ?. Neptune and Gemme / Gemme and Neptune, well maybe not.
This plaque is approx 150 mm x 190 mm and was cut in teak to 7 mm maximum depth. The cutter was a 3 mm diameter ball nose running at 3000 rpm and with a feed rate of F300 it took approx. 3 hours to complete. (The finished plaque has been gloss varnished and it was difficult to get a reasonable picture because of the reflections.)
The image is called 'Gemme', and this can be downloaded from Martin De Roode's website at
http://engraving.majosoft.com/html/perfect_pictures.html.
I have posted my G-Code for this project if anyone is interested in cutting this plaque themselves. (If you use a high speed spindle then the feed rates can be increased considerably but to avoid overloading the cutter, reduce the feed rate by 50% or so for the first cut then reset to the full rate for the remainder. The X and Y zero is dead centre of the blank and Z zero is with the cutter just touching the work).
Happy routing.