Hi there
Im a total newbie - in fact I haven’t even received my A1 mini yet and thought id start looking at slicing a few models in preparation.
Ive noticed on this model that I have some ‘inner wall’ and ‘internal solid infill’. showing through on tparts of this model, and was wondering if a. this is an issue, and b: what may cause this and how I could fix If needed.
many thanks for your help. Im sure ive got a lot of learning to do with all this 
In a nutshell, that is normal and by itself, will not have an impact on the quality of your print.
When the slicer software takes a 3d model such as an STL file. It converts the triangles that make up the mesh into layers that the printer can extrude. One apt analogy is to think of the printer as being a hot-glue gun attached to an X-Y plotter.
Where the inner/outer/Solid fill etc. parameters matter is in that you have the ability to adjust them in order to achieve higher strength, smoother lines or better bonding depending on whether you make the lines smaller or larger. Each filament type also varies the impact of those parameters as well as the temps that they are extruded at.
You’ll note that the defaults all start with the same value.
thanks. I guess these things will become more apparent when I actually start printing things
There are a lot of things to learn, but they’re not particularly complex. And for the most part, the slicer shows you what it’s going to do when printing the part, so you can inspect the sliced model layer by layer to see what the printer is going to do. Change a parameter, reslice, see what happens. The Preview window remembers the layer you selected, so when you reslice that same layer will be displayed in the Preview. So you can easily see how the slicing changed.
There are no hard and fast rules. Some things work better with some prints and other things work better for other prints. Experiment. It’s actually the best part of the printing process, you ask me… figuring out what different settings will do, tweaking to get the best print you can.
