As someone who loves experimenting with 3D pens, this 30-color filament set has been an absolute game-changer for my projects. The moment I opened the package, the vibrant fluorescent and transparent colors made me feel like a kid in a candy store—I immediately wanted to create everything!

The filaments feed smoothly into my 3Doodler Flow pen without any clogging issues (a huge relief after past experiences with cheaper brands). I particularly love how quickly they cure—no more waiting nervously for delicate structures to harden! My favorite surprise? The generous 3-meter length per color. Unlike shorter refills that constantly need replacing mid-project, these let me complete intricate designs like geometric earrings and miniature planters in one go.

While the bonus stencil eBooks haven't arrived yet (fingers crossed they come through), the filaments themselves have unlocked so much creativity. The fluorescent rose filament became instant stars when I made glow-in-the-dark galaxy wall art for my niece's bedroom. Pro tip: Layer transparent yellow over white for stunning 'stained glass' effects!

One heads-up: These definitely won't fit 2.5mm pens like the 3Doodler Start+, but they're perfect for standard 1.75mm pens. After seeing how these perform, I'm already planning to buy another set before holiday crafting season—those Christmas ornaments aren't going to make themselves!