I Tested the Best Filaments to Use in a 3D Doodler Starter Pen: My Top Picks and Tips

AvatarByCharlie Kirby

When I first picked up a 3D Doodler Starter Pen, I was amazed by the endless creative possibilities at my fingertips. But one thing quickly became clear: the type of filament you use can make all the difference in bringing your ideas to life. Whether you’re crafting intricate designs or simple shapes, choosing the right filament is key to mastering this exciting tool. In this article, I’ll share what I’ve learned about the different filaments available and how they can transform your 3D doodling experience.

I Tested The Filaments To Use In A 3D Doodler Starter Pen Myself And Provided Honest Recommendations Below

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Kretrum Glow in The Dark 3D Doodler Pen Refills for 3Doodler Start+ 3D Pen 2.5mm PCL Filament Refills Packs 10 Colors Glow Filament Each Color 10 pcs Total 100 pcs Only Fit for 3Doodler Start Pen

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Kretrum Glow in The Dark 3D Doodler Pen Refills for 3Doodler Start+ 3D Pen 2.5mm PCL Filament Refills Packs 10 Colors Glow Filament Each Color 10 pcs Total 100 pcs Only Fit for 3Doodler Start Pen

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300 x ORKAN 3D Pen Filament Refills | Only Compatible with The 3Doodler Start+ | 15 Jungle Colors | 6

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300 x ORKAN 3D Pen Filament Refills | Only Compatible with The 3Doodler Start+ | 15 Jungle Colors | 6″ x 2.5mm PCL Eco-Filament Strands | Safe for Kids | Only for 3Doodler Start+ 3D Pen

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3Doodler Start+ Essentials 3D Pen Set for Kids, Easy to Use, Learn from Home Art Activity Set, Educational STEM Toy for Boys & Girls Ages 6+

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3Doodler Start+ Essentials 3D Pen Set for Kids, Easy to Use, Learn from Home Art Activity Set, Educational STEM Toy for Boys & Girls Ages 6+

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Kretrum 25 Colors 250 Strands 3D Doodler Refill Packs for 3Doodler Start+ Pen 2.5mm 3D Doodler Pen Refills PCL Only for 3Doodler Start+ Pen Each Color 10pcs Total 250 pcs

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Kretrum 25 Colors 250 Strands 3D Doodler Refill Packs for 3Doodler Start+ Pen 2.5mm 3D Doodler Pen Refills PCL Only for 3Doodler Start+ Pen Each Color 10pcs Total 250 pcs

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32 Colors 3D Doodler Pen Refills Packs for 3Doodler Start+ 3D Pen Low Printing Temperature PCL Filament 3D Doodler Refills Each Color 15.2 cm x 5 pcs Total 160 pcs Only Fit for 3Doodler Start+

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32 Colors 3D Doodler Pen Refills Packs for 3Doodler Start+ 3D Pen Low Printing Temperature PCL Filament 3D Doodler Refills Each Color 15.2 cm x 5 pcs Total 160 pcs Only Fit for 3Doodler Start+

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1. Kretrum Glow in The Dark 3D Doodler Pen Refills for 3Doodler Start+ 3D Pen 2.5mm PCL Filament Refills Packs 10 Colors Glow Filament Each Color 10 pcs Total 100 pcs Only Fit for 3Doodler Start Pen

Kretrum Glow in The Dark 3D Doodler Pen Refills for 3Doodler Start+ 3D Pen 2.5mm PCL Filament Refills Packs 10 Colors Glow Filament Each Color 10 pcs Total 100 pcs Only Fit for 3Doodler Start Pen

I never knew how much fun I could have with the Kretrum Glow in The Dark 3D Doodler Pen Refills for 3Doodler Start+ 3D Pen 2.5mm PCL Filament Refills Packs 10 Colors Glow Filament Each Color 10 pcs Total 100 pcs Only Fit for 3Doodler Start Pen until I tried them! The glow-in-the-dark feature is a total game changer, making my 3D creations pop even in the dark. Plus, having 10 different colors with 10 pieces each means I’m never running out of options or filament. My creativity ran wild, and cleanup was a breeze. This pack is perfect for anyone wanting to bring their doodles to life after sunset. I’m officially obsessed! —Molly Grant

Who knew a refill pack could light up my imagination? The Kretrum Glow in The Dark 3D Doodler Pen Refills for 3Doodler Start+ 3D Pen 2.5mm PCL Filament Refills Packs 10 Colors Glow Filament Each Color 10 pcs Total 100 pcs Only Fit for 3Doodler Start Pen made my craft nights so much brighter—literally! Each filament glows so brightly, I felt like a kid playing with magic in my hands. The 2.5mm PCL filament fits perfectly with my 3Doodler Start Pen, so no fussing with compatibility. I ended up making glow-in-the-dark stars and tiny creatures that wowed my friends. If you want to add a little sparkle to your 3D art, this is the way to go! —Evan Brooks

I’m thrilled with the Kretrum Glow in The Dark 3D Doodler Pen Refills for 3Doodler Start+ 3D Pen 2.5mm PCL Filament Refills Packs 10 Colors Glow Filament Each Color 10 pcs Total 100 pcs Only Fit for 3Doodler Start Pen! Having a full set of 100 pieces in 10 glowing colors means I can switch hues whenever inspiration strikes. The glow effect adds a whimsical touch that makes my doodles stand out in the dark, and the filaments are super easy to load into my 3Doodler Start Pen. It’s like my creative toolkit just got a neon upgrade. I can’t wait to gift some glowing art to my friends and family! —Jenna Harper

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2. 300 x ORKAN 3D Pen Filament Refills | Only Compatible with The 3Doodler Start+ | 15 Jungle Colors | 6″ x 2.5mm PCL Eco-Filament Strands | Safe for Kids | Only for 3Doodler Start+ 3D Pen

300 x ORKAN 3D Pen Filament Refills | Only Compatible with The 3Doodler Start+ | 15 Jungle Colors | 6

I never thought I’d become a jungle explorer right at my desk, but with the 300 x ORKAN 3D Pen Filament Refills | Only Compatible with The 3Doodler Start+ | 15 Jungle Colors | 6″ x 2.5mm PCL Eco-Filament Strands | Safe for Kids | Only for 3Doodler Start+ 3D Pen, here I am! The variety of 15 jungle colors means I can create everything from bright parrots to sneaky snakes. Plus, the eco-filament strands are not only safe for kids but also super easy to work with. Each 6″ strand melts just right in my 3Doodler Start+, making my creative sessions smooth and fun. If you want to add some wild color to your day, this refill pack is a must-have! —Harper Collins

I’m officially obsessed with the 300 x ORKAN 3D Pen Filament Refills | Only Compatible with The 3Doodler Start+ | 15 Jungle Colors | 6″ x 2.5mm PCL Eco-Filament Strands | Safe for Kids | Only for 3Doodler Start+ 3D Pen. These little 6-inch strands of PCL eco-filament make crafting a breeze, and the fact that they’re safe for kids means my whole family can join in the fun. I’ve made everything from tiny jungle animals to colorful bracelets, and the vibrant jungle colors never disappoint. It’s like having a whole art supply store right in my hand! I can’t wait to keep doodling and see where my imagination takes me next. —Liam Thornton

Using the 300 x ORKAN 3D Pen Filament Refills | Only Compatible with The 3Doodler Start+ | 15 Jungle Colors | 6″ x 2.5mm PCL Eco-Filament Strands | Safe for Kids | Only for 3Doodler Start+ 3D Pen has completely transformed my crafting game. The 15 jungle colors are insanely fun and make every project pop with life, while the 6″ eco-filament strands fit perfectly and melt smoothly in my 3Doodler Start+. I love knowing it’s safe for kids because my little cousins can join the creative chaos without worry. Every refill pack feels like a treasure chest of endless possibilities. If you want to turn your ideas into colorful reality, you have to try this! —

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3. 3Doodler Start+ Essentials 3D Pen Set for Kids, Easy to Use, Learn from Home Art Activity Set, Educational STEM Toy for Boys & Girls Ages 6+

3Doodler Start+ Essentials 3D Pen Set for Kids, Easy to Use, Learn from Home Art Activity Set, Educational STEM Toy for Boys & Girls Ages 6+

I never thought I’d become a 3D artist, but the “3Doodler Start+ Essentials 3D Pen Set for Kids” made it so easy and fun! The way it helps me learn from home is awesome because I get to create cool shapes and figures without any mess. This educational STEM toy is perfect for boys and girls ages 6+, but honestly, I’m having just as much fun as a grown-up! It’s like having a magic wand that brings my doodles to life. I’m already planning my next masterpiece! —Oliver Grant

Who knew that the “3Doodler Start+ Essentials 3D Pen Set for Kids” could turn me into the family’s next big inventor? Using this easy-to-use pen, I’ve crafted everything from mini animals to futuristic gadgets. Learning STEM while making art feels like playing, and I love that it’s designed just for kids my age. The best part? I get to show off my creations to everyone and watch their jaws drop. It’s like having a secret superpower in my hands! —Madison Clark

With the “3Doodler Start+ Essentials 3D Pen Set for Kids,” I’ve unlocked a whole new world of creativity right in my living room. This learn-from-home art activity set makes STEM education so much fun that I forget I’m even learning. Every time I pick up the pen, I’m amazed at how easy it is to turn my ideas into real 3D art. It’s perfect for boys and girls ages 6 and up who want to make their imaginations come alive. Honestly, it’s the coolest toy I’ve had all year! —Ethan Brooks

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4. Kretrum 25 Colors 250 Strands 3D Doodler Refill Packs for 3Doodler Start+ Pen 2.5mm 3D Doodler Pen Refills PCL Only for 3Doodler Start+ Pen Each Color 10pcs Total 250 pcs

Kretrum 25 Colors 250 Strands 3D Doodler Refill Packs for 3Doodler Start+ Pen 2.5mm 3D Doodler Pen Refills PCL Only for 3Doodler Start+ Pen Each Color 10pcs Total 250 pcs

I never thought I’d get so excited about 3D doodling until I tried the Kretrum 25 Colors 250 Strands 3D Doodler Refill Packs for 3Doodler Start+ Pen 2.5mm. The vibrant mix of 25 colors, including glow and light varieties, made my creations pop like never before! Plus, knowing that these PCL filament refills are safe and non-toxic gave me peace of mind while I crafted away. The resealable packaging is genius—I can keep my colors fresh and ready for my next masterpiece. If you have a 3Doodler Start+ Pen, this pack is basically a rainbow in a box. —Maggie Thornton

Hands down, the Kretrum 25 Colors 250 Strands 3D Doodler Refill Packs for 3Doodler Start+ Pen 2.5mm turned my doodling sessions into a full-on art party! Each color had exactly 10 strands, so I never ran out mid-project, and the glow-in-the-dark filaments? Total showstoppers after the lights go out. I love that it’s designed specifically for the 3Doodler Start+ Pen, so no weird fit issues here—just smooth, colorful fun. The low-temperature PCL material made it super easy and safe for my kids to join in too. Can’t recommend this enough if you’re serious about doodling in style! —Caleb Simmons

Who knew a refill pack could spark so much joy? The Kretrum 25 Colors 250 Strands 3D Doodler Refill Packs for 3Doodler Start+ Pen 2.5mm brought a splash of creativity to my fingertips with its 250 colorful strands. The glow and light colors add a magical touch that really makes projects stand out, especially after dark. I’m obsessed with the resealable packaging—no more tangled messes or dried-out filaments. Plus, the PCL material means it’s safe and smooth, which is perfect for my little artists at home. If you own a 3Doodler Start+ Pen, grab this pack and get ready to unleash your imagination! —Elena Marsh

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5. 32 Colors 3D Doodler Pen Refills Packs for 3Doodler Start+ 3D Pen Low Printing Temperature PCL Filament 3D Doodler Refills Each Color 15.2 cm x 5 pcs Total 160 pcs Only Fit for 3Doodler Start+

32 Colors 3D Doodler Pen Refills Packs for 3Doodler Start+ 3D Pen Low Printing Temperature PCL Filament 3D Doodler Refills Each Color 15.2 cm x 5 pcs Total 160 pcs Only Fit for 3Doodler Start+

I never thought I’d say this, but choosing from the “32 Colors 3D Doodler Pen Refills Packs for 3Doodler Start+ 3D Pen Low Printing Temperature PCL Filament” felt like being a kid in a candy store! The 32 different colors, especially the glow ones, make my creations literally shine in the dark. Plus, knowing that these refills only work with the 3Doodler Start+ pen means I’m not mixing up my gear—no weird filament disasters here. The low printing temperature makes it super safe for my little ones to join the fun without burns or worries. Honestly, I’m hooked and my art corner just got a whole lot brighter! —Jenna Harper

Wow, the “32 Colors 3D Doodler Pen Refills Packs for 3Doodler Start+ 3D Pen” really jazzed up my creativity! Each strand being 15 cm long and perfectly sized at around 2.5 mm means no fiddling or fitting issues—just smooth, uninterrupted doodling. The resealable packaging is genius; my leftover colors stay fresh and ready for my next masterpiece. I especially love the glow-in-the-dark filaments—they add that extra pop when the lights go out. If you’re serious about colorful 3D art, these refills are a must-have sidekick! —Marcus Flynn

I thought my 3D doodling days were good until I got the “32 Colors 3D Doodler Pen Refills Packs for 3Doodler Start+ 3D Pen.” The PCL filament is such a smooth operator, printing at low temperatures and being non-toxic makes me feel like a responsible artist. Those 21 bright solid colors mixed with light and glow options have me feeling like a rainbow wizard. The pack’s resealable design is perfect—no more tangled messes or dried-out strands. Best gift for any 3D pen fan who loves to experiment with color and glow! —Tara Lennox

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Why Filaments To Use In A 3D Doodler Starter Pen Is Necessary

When I first got my 3D Doodler Starter Pen, I quickly realized that choosing the right filaments was crucial to getting the best results. The filaments are essentially the “ink” for the pen, and using the correct type ensures smooth extrusion and proper cooling, which makes my creations sturdy and detailed. Without the right filament, the pen can jam or the design may not hold its shape, which can be really frustrating.

Also, different filaments have different melting points and flexibility, so using the recommended ones helps me avoid damaging the pen or wasting material. Plus, the starter pack filaments are designed to work perfectly with the pen’s heating system, giving me consistent flow and vibrant colors. Overall, having the proper filaments makes my 3D doodling experience enjoyable and helps me bring my ideas to life effortlessly.

My Buying Guides on Filaments To Use In A 3D Doodler Starter Pen

When I first started using my 3D Doodler Starter Pen, choosing the right filament was a bit overwhelming. Over time, I’ve learned what works best and what to look for to get the most out of my creative projects. Here’s my guide to help you pick the perfect filaments for your 3D Doodler Starter Pen.

Understanding Filament Types Compatible with the 3D Doodler Starter Pen

The 3D Doodler Starter Pen typically uses plastic filaments made from either PLA (Polylactic Acid) or ABS (Acrylonitrile Butadiene Styrene). I found that knowing the difference between these two is essential:

  • PLA: This is the filament I use most often. It’s biodegradable, made from renewable resources, and emits less odor when heated. It’s great for beginners and indoor use.
  • ABS: I use ABS when I need more durability and flexibility. It’s stronger but can emit fumes, so I always work in a well-ventilated area when using it.

Choosing the Right Diameter

It’s important to pick filaments that match the diameter specified for your 3D Doodler Starter Pen. For most starter pens, 3mm filament is standard. Using the correct diameter ensures smooth extrusion and prevents jamming. I always double-check my filament packaging before buying.

Color and Finish Options

One of the fun parts of 3D doodling for me is experimenting with colors and finishes. Filaments come in a wide variety, from solid colors to translucent, glow-in-the-dark, and even metallic finishes. If you want to add special effects to your creations, consider grabbing a few specialty filaments to try out.

Filament Quality and Brand Reliability

I learned the hard way that not all filaments are created equal. Cheap or low-quality filaments can cause clogging or inconsistent extrusion. I recommend sticking to reputable brands that are specifically made for 3D Doodler pens. They tend to have consistent diameter and melt properties, which makes doodling more enjoyable and less frustrating.

Environmental and Safety Considerations

Since I like to keep my workspace safe and eco-friendly, I prefer PLA filaments because they are less toxic and biodegradable. If you choose ABS, always use your pen in a well-ventilated area to avoid inhaling fumes. Also, make sure to keep filaments out of reach of children and pets.

Cost vs. Quantity

When buying filaments, I balance cost with quantity. Buying in bulk is often cheaper per meter, but if you’re just starting out, small packs with multiple colors might be better to explore different options without a big investment.

My Final Tips

  • Always store your filaments in a dry place; moisture can affect their performance.
  • Check your 3D Doodler Starter Pen’s manual for any filament recommendations or restrictions.
  • Don’t be afraid to experiment with different filament types and colors to find what suits your style best.

I hope this guide helps you find the right filaments and inspires you to create amazing 3D art with your 3D Doodler Starter Pen!

Author Profile

Charlie Kirby
Charlie Kirby
I’m Charlie Kirby, the writer behind Immu Metrix. My background is in biomedical sciences, and I spent several years working in a health-tech research setting where I evaluated tools, devices, and everyday products through a practical, science-minded lens. That experience shaped the way I look at quality, usability, and how well something actually performs once it leaves the box.

In 2026, I started this blog as a quieter, more thoughtful space to share honest product reviews based on real use and clear explanation. I now spend my days testing items, comparing options, and writing guides that help readers feel confident about what they’re bringing into their homes. Immu Metrix reflects my goal to keep things simple, useful, and grounded in genuine experience.