At some point, you decided you were going to figure out 3D printing.
Maybe someone got you a printer. Maybe you bought one yourself in a moment of ambition that felt very reasonable at the time. Maybe it's been sitting untouched for two years, maybe you unboxed it yesterday. Doesn't matter. The point is: you're here now, you've committed, and you have absolutely no idea what's about to happen to you.
This is that story.
Chapter One: What Do You Mean I Can't Just Press Go?
The first thing 3D printing teaches you is that you have been dramatically overestimating your spatial reasoning your whole life.
You turn the printer on. You are ready. And then the internet tells you that before you print a single thing, you need to level the bed. Okay. Fine. You know what level means.
Except bed levelling is not the calm, logical process the word implies. You're adjusting corner knobs, trying to get the nozzle to exactly the right distance from the bed, tested by sliding a piece of paper underneath with "just a little resistance." What this means in practice: you fix one corner, which breaks a different corner, which has somehow affected a third corner that was fine five minutes ago. You go around the bed eight times. You start to wonder if flat is actually a concept or just something humans made up.
Then there's filament. PLA. ABS. PETG. TPU. Each one has its own temperature range, its own quirks, its own devoted Reddit community ready to tell you you've been doing it wrong. "Just use PLA," someone eventually says, and you have never loved a sentence more in your life.
You use PLA. You print a benchy (a little test boat, it's a whole thing). It's lopsided and stringy and the hull looks like it went through something. But it exists, and you made it exist and that's what matters.
Chapter Two: The Dilemma (Feat. Your Own Hubris)
At some point you're going to want to print something specific. Not just benchies and free models available from online sites. You want something custom. Something that doesn't exist yet.
A sensible person pays someone to model it. You are not a sensible person right now. You are a person who printed a benchy and has therefore decided you are, essentially, an engineer.
"How hard can modelling really be," you ask, standing at the edge of a cliff you’re too bold to see yet.
Professional 3D modelling software costs the kind of money that makes you laugh out loud alone in your room. You spiral. You make a list. You search up tik toks. You close the list. And then someone says: "Just use Blender. It's free." Okay, slay. I can get behind that.
Chapter Three: The Donut. You Know About the Donut.
Every tutorial, every Reddit thread, every single piece of beginner advice points to the same place: the Blender Donut Tutorial. It is a rite of passage. You will make the donut before you make anything useful, and you will do it with humility, because the first time you open Blender's interface you will feel like you've sat down at the controls of a commercial aircraft.
You do the donut on double speed because you have no patience (then spend more time than that going back to pause and replay and ask “where the heck is that menu item???) and emerge feeling somewhat ready.
Then you open a new file. You delete the starting cube with the energy of someone who has done this before. You begin your actual model.
The next four hours are the worst four hours of your week.
Chapter Four: Shapes Are Apparently Hard
Here is something nobody tells you before you try to model in 3D: you do not, actually, understand geometry.
You pull a vertex. It goes the wrong direction. The face folds in on itself and is now inside out somehow. You extrude an edge, and it creates five new pieces of geometry you did not ask for. You extrude flat planes point by point in an effort to make something look right. Circles?? Don't even think about it.
And you know, somewhere deep in your soul, that there is a faster way to do all of this. Professionals are absolutely not sitting here moving individual vertices one by one like a fool. There are shortcuts. There are modifiers. There are menu items. You can feel them existing just out of reach, taunting you. But you don't know what they are yet, and the gap between knowing a shortcut exists and having it become muscle memory feels one thousand years wide.
(The real villain of early Blender is accidentally being in the wrong mode. Object mode versus Edit mode. Tab switches between them. You will forget this constantly.)
Slowly though, things start to click. You get better, then you practice, then you get better, then you stay up until 2 am fixing one edge that is slightly, imperceptibly wrong in a way that only you can see. You fix it. You look at the whole model and decide you hate the way you did it and you know so much more now, and could build it better from the ground up if it was fresh. You delete it. You start again.
(You do this more than once)
And then one day, you end up with something that looks actually good. You rotate it around the viewport from every angle. You feel like a god. Briefly.
Chapter Five: Your Model Looks Fine and Yet Everything Is Wrong
You go to export your beautiful model and something, an add-on, a forum post, your own paranoid googling, informs you it might not be print-ready. You check it.
The list of problems is longer than you expected.
Non-manifold geometry (eh?). Intersecting faces (where??). Flipped normals (what the heck is a normal???). And the worst part? You look at your model. You rotate it around. You zoom in from every angle.
It looks completely fine!! Where are these errors??
This is the specific madness of 3D modelling issues: many of them are invisible. The model looks beautiful. And yet mathematically it is a mess of hidden problems that the printer will either interpret incorrectly or refuse to deal with entirely. You can't find the issues by eye. You have to go hunting with tools and overlays and a lot of forum posts written by people who were very tired of explaining this.
The normals though. Fixing the normals is genuinely satisfying once you know what you're looking at. You turn on the face orientation overlay. The model lights up red and blue. Red means the face is pointing inward (bad). Blue means it's pointing out (good). You go through and flip the red ones until the whole model is blue.
You export the STL. You hold your breath.
Chapter Six: The Slicer Has Questions
You import your model into the slicer, and it is not where you left it. It is tiny, or enormous, or at a completely inexplicable angle you did not put it in.
Back to Blender. Apply your transforms. Back to the slicer. Better.
Now you get to make decisions about things you don't fully understand yet. Infill. Wall thickness. Layer height. Support structures. You pick numbers that feel reasonable, read one forum post about gyroid infill and switch to that because smart reasons (not that it's because that's the lil wiggly guys from animal crossing…) and learn that supports are little scaffolding structures for overhangs and that the real move is designing your model to need as few as possible (which you will think about next time and absolutely not this time).
You hit slice. You send it to the printer. You watch the first layer go down like it's the most important thing happening in the world right now.
It sticks!! You watch some more... It's okay… so you go do something else.
This is a mistake
Chapter Seven: Everything That Can Go Wrong
You come back to warping (the corners have decided to lift). Or layer shifting (one layer went rogue and took every subsequent layer with it, resulting in something that looks like modern architecture). Or stringing, which is when your print comes out looking like a tiny spider had a full mental breakdown all over it overnight.
And then there's spaghetti. Oh spaghetti. You come back to a loose nest of filament looped around the hotend, the nozzle still going, fully committed to a print that stopped existing around layer forty. You cry a little. You change a setting. You push “start” once more.
Eventually, you get a clean print. Then another. Then you spaghetti again for a reason you cannot identify. This is just 3D printing. You're in it now.
Bonus Chapter: You Treat Yourself
At some point, you mention your printer struggles to someone, and very kindly they advise you on a newer model. Enclosed. Automatic calibration. Less fiddling, more printing. It's more expensive. Obviously, it's more expensive. But you are so tired, and it happens to be on sale right now, and you have been through something.
You buy it. (It's a gift. You've earned it.)
The first print works: first try. No drama, no spaghetti, just a clean successful print sitting there waiting for you when you come back.
You breathe a little sigh of relief. Worth it.
Epilogue: The Joys of Post Processing
Your print now looks incredible. You hold it up. You are so proud of all the suffering you've been through to get here.
And then you notice the layer lines.
(But that's a problem for another article)
Written by Madi Laffan
