I recently acquired my first 3D printer about 3 months ago (a 7 year dream finally coming true). I love the thing and am printing all the time. I have already completed my first pair of props a little while back and moving onto my next.
As I have become more comfortable with the printer I have started to mess around a little with the settings in Cura, using the base Colorfabb nGen (High Detail) template as a basis. Most of the changes have been to get around the elephant foot it likes to create, as well as to prevent items from sticking to the bed so much. So z-offset, lowering the percent of the first layer (by default 125), as well as the fill of the first layer and tweaking temps.
Anyway, the other day I had an issue with my prints curling off the bed, which I have mostly resolved, but that’s not the real concern. What’s bugging me is my z-axis of prints is being compressed. I noticed this with a barrel I was printing (prop gun for a friend), as well as another piece that had a hole in it. The later piece I went to connect with another part that was meant to slide in to hear a crack. The hole after I looked at I realized wasn’t symmetrical. It was wider then taller. I thought I was seeing things when the barrel did it, but now it’s this part as well. This model was built to be re-assembled, so I doubt it’s a flaw with the model, especially when I look at it in Cura, and it looks perfectly round.
Sure I can print the item 90 degrees upright to get around that, but I would rather fix the issue. I am running 30% infill, 0.14mm layers, and I think 230 print speed (pretty sure, don’t have my settings on me at the office).
Does anyone have any idea what might be causing this? I will admit I have replaced the heatbed after cracking my first trying to get an ABS piece off the bed (hint, why I am tweaking settings with other filaments as well to prevent that).
UPDATE: After looking over a piece I brought into the office to talk with a co-worker about, I am starting to thing my replacement bed isn’t level. I remember installing it thinking the ends sat a little lower, but thought it was me. Now I am starting to think my bed is sitting high in the center