21pcs Multicolor Filament by NFIL3D is a colourful 3D pen refill set designed for creative drawing, DIY crafts, educational projects and handmade decorations. The pack includes 20 regular filament pieces plus 1 free refill, with 5 metres of filament per piece, providing a combined total of 105 metres of material for compatible 3D pens.
With a nominal diameter of 1.75mm, the NFIL3D refill pack provides a convenient selection of filament pieces for students, beginners, artists, teachers and hobby enthusiasts.
Whether you want to create colourful flowers, miniature models, decorative lettering, geometric structures or personalized gifts, this multicolour collection offers an engaging way to explore three-dimensional drawing.
The refill set is intended for 3D pens that support the supplied filament material, diameter and operating temperature. Compatibility should be confirmed before use.
Why Choose NFIL3D 21pcs Multicolor Filament?
21pcs Multicolor Filament combines a useful refill quantity with colourful design possibilities and an advertised total length of 105 metres.
Instead of having only one filament colour available, users can select different pieces for individual projects, shapes and decorative details.
The pack provides material for practicing simple drawing techniques and experimenting with more detailed designs.
It can be used for suitable school assignments, supervised STEM activities, creative workshops, handmade gifts and DIY art projects.
The individual 5-metre pieces also make it convenient to organize and prepare refills before starting an activity.
Key Features and Benefits of 21pcs Multicolor Filament
1. Complete 21-Piece Refill Pack
The NFIL3D 21pcs Multicolor Filament Set includes 20 regular filament pieces and 1 additional free piece.
The total pack quantity is 21 pieces, not 20.
The additional refill is already included in the advertised total.
This provides a convenient supply of material for multiple drawing sessions and creative projects.
Whether used at home or during a supervised craft activity, the pack allows users to select suitable colours for different designs.
2. Total 105 Metres of Filament
Each individual filament piece measures 5 metres.
With 21 pieces included, the total advertised filament length is 105 metres.
This quantity can support a variety of small craft projects, practice drawings and decorative creations.
Actual filament usage depends on the size of the model, the thickness of extruded lines and the complexity of each design.
Simple outlines generally require less filament than filled or three-dimensional structures.
3. Attractive Multicolor Collection
21pcs Multicolor Filament offers a selection of colours for creative 3D pen artwork.
Different shades can be used for drawing flowers, animals, geometric patterns, decorative letters and miniature structures.
Colour variety allows users to add contrast, details and personalized elements to their designs.
For example, users can combine several filament colours to create a flower with a different-coloured centre, petals and stem.
The exact colour assortment should be checked against the supplied pack.
The advertised 21 pieces do not necessarily represent 21 unique colours.
4. Nominal 1.75mm Filament Diameter
NFIL3D advertises a nominal filament diameter of 1.75mm.
Filament size is important because the 3D pen’s feeding mechanism must accept the refill diameter.
Many 3D pens support 1.75mm material, but compatibility is not universal.
Some 3D pens use different filament diameters or proprietary refill systems.
The filament’s polymer type and operating temperature must also be compatible with the pen.
Before inserting a refill, check the specifications and instructions supplied with the 3D pen.
5. Suitable for Creative 3D Drawing
21pcs Multicolor Filament can be used to create flat drawings and three-dimensional objects with a compatible 3D pen.
Beginners can practice drawing straight lines, circles, triangles and other simple shapes.
After gaining confidence, users can create decorative objects by joining separate drawn pieces.
More advanced designs may include miniature houses, ornaments, lettering and imaginative structures.
The final results depend on drawing technique, filament material, pen temperature and extrusion speed.
6. Useful for School and STEM Projects
The NFIL3D refill pack can support creative educational activities.
3D pens can introduce students to geometric shapes, spatial design and basic construction techniques.
Suitable projects include model houses, mathematical shapes, architectural outlines and classroom display objects.
Teachers can use 3D pen activities to demonstrate the difference between two-dimensional drawings and three-dimensional structures.
Children using heated 3D pens should have appropriate adult supervision.
Always follow the pen manufacturer’s age recommendations and safety guidance.
7. DIY Arts and Crafts
21pcs Multicolor Filament is suitable for a variety of creative art and craft projects.
Users can make decorative flowers, nameplates, festive ornaments, miniature accessories and customized gifts.
Different filament colours can be combined to create attractive designs.
A suitable drawing mat or stencil can help produce consistent patterns.
Once the extruded material has cooled, separately created shapes can be assembled into more detailed objects.
8. Convenient 5-Metre Individual Refills
Each filament piece measures 5 metres.
Individual pieces make it easy to prepare the required colours for a drawing session.
Users can select a refill, load it into a compatible pen and change colours according to the pen’s instructions.
Avoid forcing filament into a pen’s feeding mechanism.
Keep unused filament protected from dust, excessive bending and unsuitable storage conditions.
9. Suitable for Beginners and Hobby Enthusiasts
21pcs Multicolor Filament can support repeated practice for users learning 3D pen drawing techniques.
Beginners can start with simple lines, curves, patterns and flat shapes.
As their drawing skills develop, users can experiment with more complex structures and multicolour designs.
Smooth extrusion depends on the actual filament material, a compatible pen and appropriate operating settings.
Users should always select the correct material profile or temperature before drawing.
10. Creative Refill Pack for Gifting
The NFIL3D refill set can be a useful gift for someone who already owns a compatible 3D pen.
It offers a selection of filament pieces for hobby activities, creative workshops and suitable educational projects.
This product is a filament refill pack rather than a complete 3D pen set.
A 3D pen is not included unless explicitly stated in the purchased bundle.
Creative Applications of NFIL3D 21pcs Multicolor Filament
School Projects and Educational Models
21pcs Multicolor Filament can be used for suitable classroom design assignments, geometry demonstrations and miniature structures.
Students can create colourful shapes and educational display objects.
DIY Art and Craft Projects
Create handmade flowers, decorative patterns, miniature ornaments and customized craft pieces.
Miniature Houses and Models
Use the filament to design small houses, imaginative structures and simple three-dimensional models.
Personalized Gifts and Decorations
21pcs Multicolor Filament can be used for decorative lettering, nameplates, ornaments and handmade gift accessories.
Geometric Shape Practice
Practice drawing triangles, rectangles, circles, cubes and other suitable geometric forms.
Creative Hobby Activities
Experiment with different filament colours to make original designs, artistic models and decorative objects.
NFIL3D 21pcs Multicolor Filament Technical Specifications
| Specification | Details |
|---|---|
| Brand | NFIL3D |
| Product Name | 21pcs Multicolor 3D Pen Filament Refill Pack |
| Product Type | 3D Pen Filament Refills |
| Regular Filament Pieces | 20 |
| Additional Free Refill | 1 |
| Total Filament Pieces | 21 |
| Length Per Piece | 5 Metres |
| Total Filament Length | 105 Metres |
| Nominal Filament Diameter | 1.75mm |
| Colour | Multicolor |
| Exact Unique Colour Count | Confirm from actual pack |
| Material Composition | Confirm from product packaging |
| Compatibility | Pens supporting the material and 1.75mm diameter |
| Applications | Drawing, Crafts, DIY Models and Educational Projects |
| 3D Pen Included | No – refill pack only |
How to Use NFIL3D 21pcs Multicolor Filament
Step 1: Check Pen Compatibility
Confirm that your 3D pen accepts 1.75mm filament and supports the specific material supplied in the pack.
Step 2: Prepare Your 3D Pen
Connect the pen to its recommended power supply and follow the manufacturer’s startup instructions.
Step 3: Select the Correct Temperature
Choose the pen’s appropriate material setting or operating temperature.
Different filament materials can require different processing temperatures.
Do not assume that every 1.75mm refill uses the same setting.
Step 4: Insert the Filament
Load the selected filament piece according to your pen’s feeding instructions.
Step 5: Start Drawing
Practice creating simple lines, curves and shapes on a suitable drawing surface.
Step 6: Create 3D Models
Combine separate shapes and different colours to create decorative objects, miniature models and personalized designs.
Step 7: Change Colours
Follow the pen’s unloading procedure before inserting another refill.
Step 8: Store Remaining Filament
Keep unused filament in a clean, cool and dry location away from direct sunlight and excessive heat.
Tips for Better 3D Pen Drawing Results
Start with simple patterns before attempting complex three-dimensional objects.
Use suitable stencils or drawing templates to guide your designs.
Select the correct extrusion temperature for the supplied filament material.
Keep the pen’s feeding mechanism and nozzle clean according to its maintenance instructions.
Allow newly extruded material to cool before handling it.
Use steady movements to produce consistent lines.
Choose contrasting colours to highlight decorative details.
Avoid forcing incompatible filament into the pen.
Store unused refills away from dust, moisture and excessive heat.
Never touch a heated nozzle.
Children should use heated 3D pens with appropriate adult supervision.
Work in a suitably ventilated area and follow the pen manufacturer’s safety instructions.
Frequently Asked Questions About 21pcs Multicolor Filament
What is NFIL3D 21pcs Multicolor Filament?
21pcs Multicolor Filament is a 3D pen refill pack from NFIL3D containing 20 regular filament pieces and 1 additional free refill.
How many filament pieces are included?
The pack contains 21 pieces in total.
What is the length of each piece?
Every filament piece has an advertised length of 5 metres.
What is the total filament length?
The total is 105 metres, calculated as 21 pieces multiplied by 5 metres each.
Does the pack contain 21 different colours?
The pack contains 21 pieces. The exact number of unique colours should be confirmed from the actual assortment.
What is the filament diameter?
The nominal filament diameter is 1.75mm.
Is 21pcs Multicolor Filament compatible with all 3D pens?
No. The pen must support the filament’s diameter, material type and operating temperature.
Is this refill pack suitable for children?
The refills can be used in age-appropriate activities with a suitable 3D pen. Heated pens require appropriate adult supervision.
Can this filament be used for STEM learning?
Yes. It can support suitable classroom demonstrations, geometry projects and hands-on design activities.
Is the filament low-odour?
Odour characteristics depend on the actual polymer formulation and operating temperature. A low-odour claim should not be guaranteed without product-specific information.
Is a 3D pen included?
No. This product is described as a filament refill pack.
How should the refills be stored?
Store unused filament in a cool, dry place away from direct sunlight, dust and excessive heat.
Buy NFIL3D 21pcs Multicolor Filament
21pcs Multicolor Filament by NFIL3D provides a convenient refill collection for creative 3D pen drawing.
With 20 regular pieces plus 1 free refill, 5 metres per piece, 105 metres total and a nominal 1.75mm diameter, the pack is suitable for a variety of creative projects when used with a compatible pen.
Whether you are creating handmade ornaments, colourful models, school projects or personalized gifts, the NFIL3D refill pack offers multiple creative possibilities.
Explore the NFIL3D 3D Pen Filament Collection for additional refill packs and options.
For pen material and diameter compatibility guidance, visit the 3Doodler 3D Pen FAQs.
Visit the NFIL3D Store for more 3D pen refills, printing pens and creative accessories.
