Directly drawing three-dimensional figures in the air without support often leads to the formation of a shapeless “porridge” of plastic if the beginner does not know the basic principles of constructing a frame. For a successful start, you need to understand that 3D pen requires the creation of a solid foundation, on which the volume is subsequently increased. The first step is to master the technique of drawing on a flat surface using stencils, as this allows you to form stable walls of the product. Without the use of substrates or templates, it will be extremely difficult for a novice user to control the geometry of the figure and the rate of hardening of the material.
The mistake of many beginners is to try to immediately create a complex mechanism or a large figurine, which invariably leads to disappointment and overuse of expensive filament. It is much more effective to start by creating simple flat elements, which are then connected into a single structure. This approach allows you to practice the skill of controlling the nozzle temperature and plastic feed rate. It is also important to choose the right material, since different types of polymers behave differently when cooled and require specific equipment settings.
In this article, we will analyze specific projects that can be implemented immediately after purchasing the device, and also provide technical recommendations for working with various types of plastic. You will learn how to avoid common mistakes, such as thread sticking or deformation of the finished product. Understanding the physical properties of the polymer and proper preparation of the workplace will become the foundation for creating high-quality three-dimensional objects. Let's take a step-by-step look at the process of creating simple but effective things that will be the first steps in the world of additive creativity.
Choosing the right plastic for your first experiments
The first critical step before starting to create is to determine the type of plastic you will be working with, as this will determine the temperature and painting technique. For novice users, the best choice is considered PLA plastic (polylactide), which is made from renewable raw materials and does not emit toxic substances when heated. This material is ideal for children and people sensitive to odors as it is virtually odorless when melted. However, it has its own characteristics: PLA hardens quickly and can be quite fragile, which requires care when joining parts.
An alternative is ABS plastic, which has high strength and flexibility, but requires good ventilation in the room due to the release of styrene. Working with ABS is more difficult, as it is prone to shrinkage and can peel off from the surface when it cools, unless special adhesives or backings are used. ABS has a higher melting point, so 3D pen must have sufficient power for its high-quality processing.
⚠️ Attention: When working with ABS plastic, be sure to ventilate the room and use a respirator mask, as the fumes released can cause headaches and allergic reactions.
There are also specialized types of filament, such as PCL (polycaprolactone), which melts at very low temperatures and is safe even for contact with children's skin. This material is great for the very first training sessions, when you just need to feel the instrument. For more experienced users who want to create functional items, PETG combines the strength of ABS with the printability of PLA.
Safety precautions and workplace preparation
Before you turn on the device, you must set up a safe work environment because 3D pen is a heating device with an open or semi-closed nozzle. The heating temperature can reach 240 degrees Celsius, which creates a risk of burns if touched carelessly. It is recommended to use a special silicone mat or backing, which not only protects the table surface from plastic sticking, but also serves as a ruler for measuring the size of the objects being created.
It is important to ensure that the device itself is stable when it is in standby mode. Many pen models have special stands that prevent the hot tool from rolling off the table. If the stand is not included in the package, you should make it yourself from thick cardboard or a wooden block to prevent the hot spout from coming into contact with flammable objects.
Particular attention should be paid to organizing the wires if your model is powered by the network. A tangled wire may cause your hand to jerk while drawing, which will damage the product and may cause injury. Cordless battery-powered models are safer in this regard, but require monitoring the battery charge, since a voltage drop can lead to an uneven supply of plastic.
Always allow the pen to cool completely before changing refills or storing it in its case. Sudden cooling of the nozzle with plastic residue inside can lead to its clogging.
Simple flat shapes: keychains and pendants
The most accessible project to master 3D pens is to create flat figurines that can later be used as keychains, pendants or refrigerator magnets. To do this, you will need a template that you can draw by hand or print on a printer. The template is placed under a transparent film or file, which allows you to trace the contours with hot plastic without staining the paper or burning the design.
The technique for creating such products is to draw an outline and then fill the inner area with shading or a spiral. It is important to give each layer a little time to harden so that the figure does not lose its shape. To add volume, you can make two identical halves and fasten them by drawing 3D pen along the joint, creating a “seam” effect.
- 🔑 Keys: Create a unique keychain with your favorite band's name or logo using different plastic colors for contrast.
- 🎁 Gifts: Make personalized tags for suitcases or gift wrapping in the form of geometric shapes.
- 🏠 Interior: Make a set of stylish coasters in the form of leaves or abstract patterns, combining several layers for density.
When filling the area, try to keep the handle perpendicular to the surface so that the thread lies evenly and does not create lumps. If you're using clear plastic, you can experiment with layering colors to create interesting gradients. Such flat elements are excellent training for coordination of movements and understanding of material behavior.
☑️ Checklist for creating a flat figure
Volumetric structures: houses and geometric shapes
Once you've mastered flat drawing, you can move on to creating three-dimensional objects, starting with simple geometric shapes such as a cube, pyramid or cone. The secret of success lies in building the “skeleton” of the figure. First, individual faces are created on a plane, which are then connected at the desired angle while the plastic is still warm and sticky. If the plastic has cooled down, you can additionally warm up the joints with a handle or use it as a “soldering iron” for welding parts.
A great project for beginners is to create a miniature house. The walls are drawn separately with windows and a door, and then assembled into a box. The roof can be made removable or soldered tightly. Such houses can serve as pencil cases for small parts, decor for dollhouses, or simply interior elements. Using different plastic textures, for example, “wood” or “stone,” will add realism to the product.
| Body type | Difficulty | Lead time | Plastic consumption |
|---|---|---|---|
| Cube/Pyramid | Low | 10-15 min | 3-5 meters |
| House with a roof | Average | 30-45 min | 10-15 meters |
| Geometric ball | High | 60+ min | 20+ meters |
When assembling three-dimensional figures, it is important to maintain right angles if the geometry of the object requires it. You can use a square or other available means to fix the edges while the plastic cools. Don’t try to make a large figure right away - it’s better to break a complex object into several modules and assemble them in the final.
The secret to perfect angles
To get perfectly even corners when assembling a cube, draw two adjacent walls, let them set slightly, but not completely set, and carefully bend them at 90 degrees, holding them with your fingers for a few seconds.
Functional items: cases and holders
A 3D pen is not only a creative tool, but also a way to solve everyday problems by creating unique accessories. One of the most rewarding projects for beginners is making a personalized case for your smartphone or tablet. You can use an old clear case as a base and apply a 3D pattern to it, or you can weave the entire case using a mesh structure that will absorb shock.
Various organizers and holders are also easy to create. For example, you can make a headphone stand in the shape of a hand or an abstract figure that will stand steadily on the table. Cable holders that attach to the edge of your desk can help keep cable clutter at bay. For such products it is better to use durable ABS or PETG, as they will be subject to mechanical stress.
- 🎧 Gadgets: AirPods case or phone stand with the company logo.
- 🖊 Stationery: An original pen stand in the shape of the Eiffel Tower or a case for glasses.
- 🚗 Car: A simple phone holder for a car (requires very durable plastic and care).
⚠️ Attention: When creating cases for electronics, make sure that the holes for cameras, speakers and charging ports match the model of your device, otherwise the functionality of the gadget will be impaired.
When creating functional things, it is important to consider the thickness of the walls. Elements that are too thin will quickly break, and elements that are too thick will make the product heavy and wasteful. The optimal wall thickness for most small objects is 2-3 millimeters, which is achieved by double or triple passing of the line.
Creative projects: flowers and decorations
One of the most popular trends in 3D painting is creating realistic flowers and decorations. Flower petals are drawn on the template, then slightly curved to give a natural shape and collected into a bud. The center of the flower can be made contrasting or special plastic with glitter can be used. Such flowers will never wither and will become an excellent interior decoration or decorative element for clothing.
Jewelry created with 3D pens, can be very complex and delicate. Necklaces, earrings and rings made using the weaving technique look light and modern. Using plastic that changes color depending on temperature, or filament that glows in the dark, you can create truly magical accessories. The main thing here is a sense of proportion and symmetry.
To create realistic flowers, use the drop technique: start a thicker line at the base of the petal and gradually reduce the pressure on the plunger towards the edge, creating a pointed tip.
Don't be afraid to combine different materials. You can insert beads, rhinestones, or even real dried flowers into ready-made plastic flowers, sealing them with transparent plastic. This opens up endless possibilities for realizing artistic ideas. Start with simple daisies or tulips before tackling complex roses or orchids.
Common errors and ways to resolve them
During the learning process, every beginner faces a number of typical problems, knowledge of which will help save time and nerves. One of the most common mistakes is drawing too slowly, which causes the plastic to accumulate at one point, forming an unsightly blob. Movements should be smooth and continuous. If you need to stop, first move the handle to the side or stop feeding plastic.
Another problem is peeling layers. This happens if a new layer is applied to the previous one that has already completely cooled. In such cases, the joints must be carefully heated with the nose of the handle to melt the surface and ensure adhesion. It is also important to monitor the temperature: if it is too low, the plastic will lie torn, if it is too high, it will stretch in threads.
- 🌡 Temperature: Select the mode strictly according to the type of plastic indicated on the packaging of the rod.
- 🧹 Cleanliness: Regularly clean the nozzle from carbon deposits to avoid jerks when feeding material.
- 🧱 Base: Always use a base to ensure the bottom layer of the product is even and smooth.
What to do if the pen stops feeding plastic?
Most likely, the nozzle is clogged or the rod has run out. Try pressing the reverse feed button, then forward again. If this does not help, you may need to replace the rod or clean the canal with a needle (if the design allows it).
Can you mix colors in one pen?
Yes, you can, but when switching to a new color, you need to completely unload the previous one, otherwise the colors will mix into a dirty shade. This is even useful for creating gradients, but for pure colors it is better to completely clear the feed channel.
How to remove threads (“cobwebs”) from a product?
Thin threads formed between the connection points can be easily removed with tweezers after the plastic has completely cooled. You can also carefully walk over them with the heated tip of a pen so that they are “drawn in” into the main mass, but this requires skill.
Is it safe to give a 3D pen to a 5 year old child?
Only if it is a special children's pen with a low heating temperature (using PCL plastic) and under strict adult supervision. Regular pens with a temperature of 200+ degrees are dangerous for children of primary school age.
Where can I get drawing templates?
You can draw the templates yourself by hand, download ready-made outlines on the Internet (coloring books are great for children), or use special 3D printing applications that can generate outlines from 3D models.