PLA First Layer: 5 Settings for Perfect Bed Adhesion
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The first layer is the most important layer of any 3D print. Get it wrong, and the whole print fails. Get it right, and the rest is easy. Here are 5 settings that guarantee perfect PLA bed adhesion.
1. Bed temperature: 50–60 °C This is the recommended range for Arkforge PLA. A warm bed keeps the first layer soft just long enough to bond firmly. For large flat prints, lean toward 60 °C. For small detailed prints, 50 °C works fine. Let the bed preheat for 2–3 minutes before printing.
2. Nozzle height: the paper test A sheet of paper should slide between nozzle and bed with slight resistance. Too high = filament doesn't squish and doesn't stick. Too low = filament gets squished too thin, causing a rough first layer and potential clog. Re-level every 10–15 prints or after changing build surfaces.
3. First layer speed: 20–30 mm/s Slow down! Your normal print speed of 50–200 mm/s is too fast for the first layer. At 20–30 mm/s, the filament has time to press into the bed and bond. Most slicers have a separate "first layer speed" setting—use it.
4. First layer flow: 100–110% Slightly over-extruding the first layer (105–110%) pushes more plastic into the bed surface, improving grip. Don't go above 110%—you'll create an elephant's foot that's hard to remove.
5. Skirt or brim
- Skirt: A line around the print (not attached). Purges the nozzle and lets you check adhesion before the real print starts. Use for most prints.
- Brim: Attached to the print base. Adds surface area for parts with small footprints or tall narrow shapes. Use when adhesion is tricky.
Bonus tip: Clean your bed! Finger oil, dust, and old filament residue kill adhesion. Wipe PEI sheets with isopropyl alcohol. Glass beds benefit from a thin layer of hairspray or glue stick.
With these 5 settings dialed in, your PLA prints will stick firmly and release cleanly when cooled.
Arkforge PLA's low-warp formula and consistent 1.75±0.03 mm diameter make first-layer success predictable.
Start every print right with Arkforge PLA.
Happy printing!
– Arkforge Team