Now following the recommendations of this forum with success I cut contours in thick stock as a slim pocket 1mm wider than the original edge, almost through the stock, with rest of appr. 1-2mm. Now for a smooth edge the last 1-2mm or so are cut with an compression bit, cutting off the residual 1mm with one run down to the bottom to achieve a nice smooth upcut on the bottom and a downcut on top.
Any recommendations for the feed and speed? I use this bit 1/4" diameter: