I print so infrequently (almost never) I'll probably never learn the ins and outs. The slic3r settings were all preconfigured by makerfarm (I guess, I don't remember setting any) I printed out a pig that is meant to be a salt or pepper shaker and some pieces that help 'stiffen up" the pegasus and those went well. They weren't my designs I just downloaded the stl's. I want to print a Geneva wheel and show it to a friend of mine. Thanks.