Will my case fit together?

Hi. First time posting. I am about to print a case I designed myself and want to know if it will fit together before I commit to a 6+ hour print at my local library. It fits together like a box with a lip around the seam between the top and the bottom. There is no gap between the inside and outside of the lip. My question is do I need a gap or a buffer between where the lip of the top of the box fits into the lip of the bottom of the box? Can I print it without a gap between where the part should slide together and fit perfectly?


I've attached the bottom and top of the case if taking a look at it would help you answer my question.

Attachment 955

Do you plan on printing it all at once or in multiple parts?