Getting Back Into 3D Printing: What Happens When You Dust Off The Old Printer
May 11, 2026
I haven't used my 3D printer in months. Maybe even a year. It was sitting on the workbench gathering dust, surrounded by tangled PLA filament spools that had slowly oxidized from exposure to air. But something about it just called to me.
The First Print: A Humbling Experience
I started with what I thought would be a simple test print — a 50mm cube, 1cm tall. Nothing fancy. Just checking if the printer still remembered how to extrude properly and stick to the bed.
"The first rule of maker culture: Expect failure."
Print one failed within five minutes. The layers were separating like a bad lasagna. Then another print, this time I was careful about the temperature — 210°C for PLA as per my notes from last year — and it still didn't stick to the bed at all.
I stared at that cube trying not to smile. This is what happens when you go away from a project:you lose more than just time, you lose muscle memory, calibration settings drift, and you have to start over.
The Filament Problem Nobody Talks About
One of the first things I noticed was the filament itself. The spools were dusty — not a light coating of grime but actual oxidation from months in open storage. When I loaded one into the printer, it hesitated before extruding properly.
I had toheat up my filament: running the printer at slightly higher temperatures for a few hours to burn off moisture that had accumulated over time. This is something every serious maker should know: never store your filament in a plastic bag without proper desiccant, and if you've been away from 3D printing for more than six months, give it a good heat-up cycle before using it.
"Clean filament prints clean parts."
I also found that my printer's extruder had gotten stiff. The gears weren't grabbing the filament properly anymore. A quicktightening adjustmentto the extruder screws restored grip, and suddenly the flow was smooth again.
The Recalibration Journey
By print three or four I realized something: my E-steps were off. The printer was telling me it had moved 10mm but in reality only about 9.5mm. This is a common issue with stepper motors that have been idle — the microstepping calibration drifts over time.
I also discovered that my Z-offset needed adjustment. The first layer was still too high, leaving gaps between the print and bed even after I heated up the build plate to 60°C. A simple manual tweak in the menu brought it back into alignment.
"Every successful print is built on lessons from failed ones."
The real breakthrough came with my flow rate calibration. I had been using the same settings from two years ago, but something about my printer's response had changed. Running test prints at different percentages revealed that my extruder was putting out 12% too much filament — a small error that would have been fine for simple cubes but would ruin anything requiring precise measurements.
The First Success: A Raspberry Pi Case
I wanted to print something useful, not just test prints. I decided on aRaspberry Pi 5 case with integrated cooling. This was perfect because:
- It would protect my electronics from the dust that accumulates in workspaces
- The integrated heatsink design required precise tolerances — exactly what good calibration helps achieve
- I could mount my Pi to control other 3D printing operations, creating a nice feedback loop
This case had three print sections with tight interlocking features. My recalibrated printer finally produced it perfectly on the first try — layers were smooth, tolerances were spot-on, and when I assembled it around my Pi, everything fit without gaps or interference.
The best part:I used the same PLA filament that had given me trouble at the start. After proper heat-up and extruder adjustment, it printed beautifully. This was a satisfying moment — proof that persistence pays off in maker culture.
The Arduino Bridge Project
If I'm being honest about my setup: this Pi case sits on top of anArduino Mega controlling a 3D printer extruder upgrade kit. Yes, I've been working on that separately. The idea was to give older 3D printers direct drive extruders for better filament control.
The Arduino build required me to print several mounting brackets and adapters — all of which printed perfectly with my recalibrated settings. This created a nice ecosystem:
"One project feeds another in the best way."
- 3D printed parts provide physical interfaces for electronics projects
- Arduino code controls the 3D printing process itself
- Raspberry Pi monitors and logs everything, creating a data feedback loop
This kind of multi-platform approach is what makes maker culture so rewarding. Each platform enhances the others.
The Realization About Materials
During this journey I learned something important about materials:your filament choice matters as much as your printer calibration.
I was using a budget PLA that works fine for simple prints but struggles with detailed features. Switching to a higher-quality PLA — even if it costs more per spool — made a noticeable difference in layer adhesion and surface finish.
"Quality materials + good calibration = professional results"
This wasn't about being cheap, it was about understanding that every input affects the output. A cheap filament might print fine on a well-calibrated machine, but when you need precision tolerances (like my Pi case), quality matters.
The Lesson About Patience
Something I learned during this experience is thatpatience is the real skill. The failed prints taught me more than any successful one ever would. Each failure gave me data: what went wrong, why it happened, how to fix it.
"Failure isn't the opposite of success — it's part of success."
I could have given up after print two or three and called my printer broken. But in maker culture, we understand thatevery machine needs recalibration, especially one that has been sitting idle.
The Satisfying Moment
When I finally printed my Raspberry Pi case perfectly — all three interlocking sections fitting together without modification, with clean lines and proper tolerances — it felt like a celebration. Not just because of the successful print but becauseI had earned that success through persistence.
The Takeaways
- Always recalibrate after long breaks: E-steps, Z-offset, flow rates all drift over time
- Heat up your filament if you've been away for more than six months
- Clean and maintain extruders — they get stiff with disuse
- Start simple, build complexity gradually: Don't jump into complex prints until your basics are solid
- Quality materials matter: Especially when you need precision tolerances
The printer is running now. It hums softly in the corner of my workshop, a testament to patience and persistence. And somewhere nearby sits an Arduino board waiting for me to write the next project that will feed into this beautiful feedback loop of maker culture.
"Every successful print is built on lessons from failed ones."