JoeJ wrote:That is normal. As people mentioned above, even though the plastic is extruded at the elevated position, gravity will pull it down to the surface of the raft. So when you actually print it, the next layer is in the correct position for where the plastic ends up. So what you are showing is normal.
I guess I'm not expressing my question properly. I know the separation layer is elevated. That's how it is supposed to work, and it is supposed to make the subsequent layers easy to separate, but it does not.
My concern is that the next layers seem to be printed LOWER than what is supposed to be to the bottom layer of the object. The result is that the hot nozzle pushes down the next layers (layers 8 and up in my illustration) and the next layers of extruded plastic into the raft, negating the effect of inserting the separation layer. At least that's what it looks like from the tool path illustration.
Are you saying that layer 8 (and following) are supposed to be printed lower than layer 7? Or that the illustrated tool path is not correct?
In either case, at any separation distance - and I have tried everything from .1 to .4, (in .02 increments) with nearly identical results - the top layer of the raft sticks to the bottom of the object tighter than the two sections of the raft do to each other. Needlenose pliers and sandpaper are required to remove the raft.
Still looking for suggestions for settings that will let the raft be removed like it does with Markerbot Desktop