Hi @altertalk, sorry for the delayed response, I’ve been traveling. I guess one thing to make sure you have set properly is your z-offset. Have you done any testing and/or calibrating to make sure it is set properly? Also what glue stick are you using? I use the Elmer’s disappearing purple and have no issues with it. I also have my z-offset so that my layers are about on the money. If you’re not familiar with how to set it there’s plenty of info in this forum. If you have trouble let me know and I’ll see if I can help.
The Initial layer line thickness (mm) by default should have been 0.425, not 100. Think of that as the vertical height of the initial layer of filament being extruded if you were to look at it from the side. I habitually measure the height of the skirts laid down and they’re almost exactly always that. They should measure to what you have this set to (if you set it to a value of 0 the initial layer will be identical to the “layer height” in the Quality section of the Basic tab.)
The Initial layer line width (%) setting is where I think you’re running into the problem. By default it is set to “125” or 125% of normal width if viewed from the top. The idea is a thicker line to help stick to the bed a little better. So if you’re modeling in a specific diameter hole that extra width will affect the diameter thus producing what you’re referring to as the ring that needs to be filed off.
You can try setting the following:
Initial layer line thickness (mm): 0.425
Initial layer line width (%): 100
to get a thick line but one no wider than it should be. If you set the thickness above to “0”, as previously mentioned make sure you add skirt lines or open the idler and manually push the filament into the extruder after the bed leveling probe sequence has completed and the nozzle is waiting to finish heating up.