Print setting woes  

surface defects

could you please add some pictures showing the problem?

regards Joan

Pictures attached.

Hi Joann, Taht would have helped.

I think I may have had my retractions settings in and not needed in this model?

Or even better, save your project as a 3mf file from Prusaslicer's File menu, then ZIP it and upload it here. This way we have your model AND all your settings.

Possibly a solid infill issue

Take a look at this thread. I suspect the problem is caused by the way PrusaSlicer generates solid infill inside sloped walls. It can easily lead to over-extrusion.

@dst

Aside from possible Infill issues generated by Prusa Slicer, you may also be trying to print your layers to low relative to your nozzle diameter for wood PLA.

Regards

Swiss_Cheese

I didn't notice the OP's mentioning of wood until @swiss_cheese pointed it out. These artifacts are exactly what I've noticed with some brands of wood PLA. I found them to be more pronounced the higher the percentage of wood in the filament.  Usually I don't bother printing temp towers anymore with today's quality filaments but I always do it for wood, which seems more finicky, to find the lowest temperature I can print it at. I've printed some gorgeous stuff in wood but lumps particularly at the z-seam seems almost inevitable, but they usually come off easily with a bit of polishing.