--- title: Step‑by‑Step Guide to Making Your Own PLA Granules at Home siteUrl: https://logzly.com/granuleforge author: granuleforge (GranuleForge) date: 2026-06-15T20:34:44.256515 tags: [granules, 3dprinting, makerspace] url: https://logzly.com/granuleforge/stepbystep-guide-to-making-your-own-pla-granules-at-home --- You’ve probably heard the buzz about “granule‑based” 3D printers promising cheaper material and faster prints. The truth is, the biggest barrier isn’t the printer – it’s the cost of buying ready‑made granules. If you can turn cheap PLA filament or even recycled plastic into your own granules, you’ll save money and get a deeper feel for the material you’re feeding your machine. Below is the exact process I use in my garage, broken down into bite‑size steps so you can start grinding today. ## Why DIY PLA Granules Make Sense Right Now Plastic waste is still a huge problem, and the maker community is getting better at closing the loop. By grinding down scrap filament, failed prints, or even a clean PET bottle (yes, you can blend PLA with a tiny amount of PET for a hybrid), you turn trash into feedstock. **For a deeper look, see how to [turn recycled plastic into high‑quality 3D printing granules](/granuleforge/how-to-turn-recycled-plastic-into-high-quality-3d-printing-granules-at-home).** It also means you can experiment with additives – a pinch of wood flour, a dash of metal powder, or a sprinkle of colorant – without waiting for a supplier to ship a custom batch. In short, you get control, creativity, and cost savings all in one. ## What You’ll Need | Item | Why It Matters | |------|-----------------| | **Desktop shredder or granulator** | Cuts the plastic into uniform pieces. A small kitchen food processor can work for low volumes. | | **Drying oven or food‑dehydrator** | Removes moisture; PLA is hygroscopic and will bubble if wet. | | **Sieves (2 mm and 0.5 mm)** | Gives you a consistent particle size. | | **Heat‑resistant container** | Holds the granules while you cool them. | | **Protective gear (gloves, goggles, mask)** | Fine plastic dust can irritate lungs and skin. | | **Optional: color pellets or additives** | For custom blends. | All of these items are either already in a typical maker space or can be bought for under $100. I started with a cheap rotary cutter from a hobby shop and a kitchen blender – nothing fancy, but it did the job. ## Step 1: Gather Clean PLA Source Material The cleaner the input, the better the granules. I usually collect: * **Spool leftovers** – the ends of a filament roll that never got used. * **Failed prints** – especially those that are still mostly solid. * **Recycled PLA filament** – if you have a spool you no longer need. Give each piece a quick visual check for contamination (oil, grease, metal bits). If you see any, set it aside; you don’t want that in your granules. ## Step 2: Cut Into Manageable Chunks Large pieces can jam a shredder. Use a pair of scissors or a utility knife to trim the material into 2‑3 cm chunks. This step also helps you spot hidden contaminants. I like to lay the pieces on a white sheet of paper – any dark specks stand out instantly. ## Step 3: Dry the Plastic Moisture is PLA’s worst enemy. Even a small amount will cause steam pockets when the granules melt, leading to weak prints. Spread the chunks on a baking tray and place them in a low‑heat oven (around 50 °C or 120 °F) for 2‑3 hours. If you have a food‑dehydrator, set it to the same temperature and run for 4 hours. Let the material cool in a sealed container to avoid re‑absorption. ## Step 4: Shred or Grind Now the fun part. Load the dried chunks into your shredder or blender. Pulse in short bursts – 5 seconds on, 5 seconds off – to avoid overheating the motor. The goal is a mix of fine shavings and small chips. If you hear a high‑pitched whine, stop and let the machine rest; overheating can melt the plastic and gum up the blades. ## Step 5: Sieve for Uniform Size Pour the shredded material onto the 2 mm sieve and shake gently. The larger pieces that stay on top can be re‑shredded. The material that falls through is then placed on the 0.5 mm sieve. Shake again; the fine granules that pass through are what you’ll feed into the printer. The remaining bits can be collected, dried again, and run through the shredder one more time. ## Step 6: Optional Additive Mixing If you want colored granules, now is the time to add pigment pellets. For wood‑filled PLA, sprinkle a few grams of finely ground wood flour per kilogram of granules. Mix thoroughly in a large, dry bucket. A quick tip: add a tiny amount of a biodegradable binder (like a few drops of corn syrup) to help the additive cling to the PLA particles. This step is optional, but it’s where you can truly make the material your own. ## Step 7: Store Properly Transfer the finished granules into airtight jars or zip‑lock bags with a desiccant packet. Label each container with the date and any additives used. Proper storage keeps moisture out and ensures consistent print quality. ## Step 8: Feed Your Granule‑Based Printer Most granule printers have a hopper that feeds the material into a heated barrel. Set the barrel temperature according to the PLA’s melt point – usually around 190‑210 °C. Run a short test extrusion to confirm the flow is smooth. If you notice clogs, check the granule size; you may need to re‑sieve for a tighter distribution. ## Troubleshooting Common Issues * **Clogging in the barrel** – Often caused by oversized particles. Run the granules through the 0.5 mm sieve again. * **Brittle prints** – Could be residual moisture. Dry the granules a second time at 60 °C for an hour. * **Uneven color** – Make sure pigment pellets are fully blended; a hand‑mixer or a small tumbler works well. ## My Personal Takeaway When I first tried making my own granules, I expected a messy, time‑consuming ordeal. The first batch was a bit coarse, and my prints showed tiny surface roughness. After a couple of tweaks – a longer drying step and a second pass through the finer sieve – the results were indistinguishable from commercial granules. The best part? Knowing that the material came from scraps that would otherwise sit in a drawer. DIY granules also open the door to experiments I never thought possible. **These kinds of experiments are great examples of [designing sustainable DIY projects](/granuleforge/designing-sustainable-diy-projects-with-recycled-polymer-granules) with recycled polymer granules.** Last month I mixed a handful of copper powder into PLA granules and printed a small decorative gear. The gear had a subtle metallic sheen and a satisfying weight. It’s these little moments of discovery that keep me glued to the bench. If you’re curious, give it a try. The learning curve is gentle, the cost savings are real, and you’ll end up with a deeper respect for the material you feed your printer. Happy grinding!