>>8406153Uh what do you mean by "solid through and through"? Like... 100 percent infill? I wouldn't recommend it, there's no point in doing that.
If you just mean "a good print with PLA", depends on your printer and the filament you're using. If you look up product reviews for your filament you'll probably find lots of recommendations for ideal print temperature. The rest is pretty much "whatever gets your print to work and look nice". If there's a specific issue you're seeing, that would help troubleshoot