On my Flashforge Dreamer the layer start point leaves a little thick bulge of plastic for maybe 1/2mm long and probably 0.1mm thick - about half again as wide as the nozzle is laying down. For most items this is not a problem, but I am currently printing a couple of thousand light covers for my Christmas display and the seam is really obvious. If I switch to random start point it looks more like a pinecone, with little bumps randomly around the circumference.

Even acetone smoothing is not helping hide this, although it does help a lot with strength and the ability of clear spray to adhere to it more evenly for UV protection, so I'll continue smoothing for now.

I'd welcome all suggestions, thanks.