Spent my last weekend cleaning out my eavestrough, Dirty and annoying job. 

I decided I needed some gutter guards, and designed these in Freecad. Simple design and pressure fitting on standard-sized eavestroughs. 

Printed at .28 layer height and put them on their short side on a raft. Printed perfectly, though took about 2 days to print 6 at once. Also, the length is 230MM so you may need to angle them on your ender 3 as I did. 

Super useful print though.