PLA First, Always, and Why
New module. We've covered the machine — hotend, bed, motion, how layers work, what it costs, where it lives. Now materials. One thing straight before we go further.
You're printing PLA. For a long time. Not a suggestion. It's the lesson title.
Why I'm this blunt about it
People buy a printer, read a forum post about PETG or ABS or some carbon-fiber-infused whatever within two weeks, and want to skip ahead. Fancier filament feels like the next level. It feels like the beginner move is holding you back.
It's the opposite. PLA isn't the beginner filament you graduate out of. It's the filament that teaches you everything, with the fewest ways to fail.
My rule, and I stand behind it: get 100 good prints in PLA before you bring up PETG. Close to literal. Not because PETG is bad. It's a fine material with a different personality — prints hotter, needs a different bed temp, warps different, smells different. Skip the baseline of what a good print looks like in the easy stuff, and you won't know what's wrong when the hard stuff acts up. You'll just be confused twice as fast.
PLA prints around 190-220°C on the hotend, room-temp-ish bed, no enclosure, minimal warping, and comes off the plate without a fight most of the time. It's patient. Everything else is less patient. Start with the patient one.
What this actually looks like at home
Here's what "PLA first" means this week.
- Check your spool. Bought a bundle or starter kit? Look at what's loaded. Says PLA, good, that's your training material. Says anything else, swap it — don't let a random PETG spool be your first real print.
- Set your slicer profile to PLA and leave it. Most slicers ship a default PLA profile that's tuned reasonably well. Don't touch temps and speeds yet. Learn what normal looks like. Don't optimize.
- Print something with dimensions that matter. Not a test cube. Something where a fit works or it doesn't. That's where the real lessons live.
The third one comes with a story. It cost me a weekend.
I designed a drawer divider for the kitchen. The junk drawer had gotten embarrassing. Spent a full Saturday measuring, modeling, getting the compartments right. Printed it Saturday night, pleased with myself.
It didn't fit. Not close, not slightly-sand-it-down close. Two millimeters too wide, in every direction, because I measured the inside opening of the drawer and forgot my divider's own walls have thickness. Basic. I knew better. Doesn't matter. I was excited and skipped the check.
Reprinted Sunday, fixed the math, and it fit. Mostly. The second one still fights me a little going in, every single time, and I've decided that's a feature.
That happened in PLA, on a Saturday, and cost me maybe $2 of filament and a few hours. Run the same mistake in a pricier material or a longer print and it turns expensive and frustrating instead of mildly annoying. PLA lets you fail cheap while you're still learning to measure right, level right, and read your own printer.
The real caution here
Plainly: PLA is the low-fume, low-drama plastic you'll touch in this class. Not zero-smell, especially in a small room, so keep airflow going, same as the ventilation lesson. But no fumes or enclosure requirements like the hotter materials. That's part of why it's the right start, not just the "easy" one. Less to go wrong, less to breathe.
Don't read "easy" as "not worth taking seriously." Some of my cleanest, most useful prints — Madison's retainer mount, the garage bins, the sprinkler bracket — are all just PLA. You don't need anything fancier to solve real problems around the house.
Before next time
Check the spool loaded in your printer, or in your kit if it hasn't arrived, and confirm it's PLA. Something else loaded? Swap it before next session. We'll do our first real print together, and everybody starts from the same material.