Disaster struck as I was working on my RepRap Wally. Fixed (?) with hot glue and the “friction welding” technique as taught to me by @Evan_Gillespie (small piece of PLA filament and a dremel). We’ll see how it holds up, I guess.
As long as it holds up long enough to print a new one!
I can’t help but think that a rectilinear fill would be stronger for this part. However, I’m still new to this; anyone care to explain fill strength to me?
Yeah, maybe. Although I think higher fill density would help the most - the honeycomb structure didn’t break down at all, it just delaminated at a single layer. But I’m also new 
I think the screen should go though the hole of a honeycomb.
Bulk injection molding machines melt plastic with friction according to a video I saw.
I find thicker walls helps the best.
Looks like that part could be modified to be printed on its side, so it would be stronger in that direction. Probably wouldn’t look as nice but it’d bits of plastic screwed to a bit of wood, form over function
I’ve lost a couple of structural parts like this. As previously mentioned, you want to avoid stress that pulls layers apart, but it’s often hard to reorientate the print. With PLA, printing with slightly higher temperature gives better bonding, but may leave messy strings. I use 4 wall thickness and a higher fill density. Honeycomb should be pretty strong tbh.