Shell not printing properly

[TRMerc 0]

I recently had a problem with a nozzle that got clogged and I couldn't clear. So I purchased a new nozzle and got everything good to go. I tried a couple of prints and I'm having a really strange problem. The shell is not printing properly. I've tried changing settings, and even set the shell to be 1.2 mm thick and it keeps printing super thin and flimsy. The strangest thing is the shell is printing with a pattern of diagonal lines going up that are alternating thin and thick like a mesh. They are also not fusing to each other so I can see each individual shell line that was printed. The shell is resilient enough to not pull apart when I move them, but the prints squish and are flexible when they are suppose to be ridged. 70% cubic infill and it feels like a spring with PLA. I was printing a part that was suppose to be durable and resist pulling a door.

[GregValiant 1,245]

Your still under-extruding.  What printer is it?  If it's a Bowden tube printer the clog may have been (and still is) up above the nozzle.

[TRMerc 0]

It is a Creality CR-10. When printing the feeder gear is slipping.

[TRMerc 0]

So I replaced the nozzle again, and it seems to be printing properly. Thought the issue was in the gcode because of the diagonal pattern that I was seeing. Maybe there was a piece of metal in the first nozzle that was causing the issue.