Frequently asked questions

Get the answers to some common questions.

Hardware


What’s a good 3D printer for beginners?
This changes over time, so rather than recommending a single fixed model, a good starting point is to check up-to-date comparison sites such as All3DP, which regularly publish beginner and budget-focused printer roundups.
In general, choose a well-known brand with strong spare part availability and community support. Printers like the Creality Ender 3 are affordable, widely supported, easy to maintain, and make a solid entry point into 3D printing.
What’s a good 3D printer for advanced materials?
Advanced materials such as PETG, TPU, and ABS benefit from enclosed printers that can maintain higher and more stable temperatures during printing.
Modern enclosed printers such as the Creality K-series or Bambu Lab printers are well suited for these materials. Their enclosed design and higher temperature capabilities make them far more reliable for advanced filaments than open-frame printers.
What 3D printers do you use?
I use two Creality Ender 3 printers, a Creality Ender 5 for larger format prints, and two Creality K1 Max enclosed printers which are my main workhorses.
I have stuck with Creality due to spare part availability, shared components across models, and long-term familiarity with the platform.
What’s the difference between PLA, ABS, TPU and PETG?
PLA is the easiest material to print and ideal for beginners, but it has low heat resistance and limited strength.
ABS is stronger but more difficult to print and usually requires an enclosed printer.
TPU is a flexible filament that is difficult to tune but useful for flexible parts.
PETG is strong, impact resistant, and suitable for many functional parts, though it benefits from higher temperatures and enclosure.
What’s a good resin printer?
Most modern resin printers are broadly similar in capability. The most important factor is choosing the largest build plate you can afford to avoid limiting part size.
Brands such as Elegoo, Creality, and Anycubic are all suitable. Checking current reviews and comparisons on sites like All3DP is recommended before buying.
What 3D resin do you use?
I primarily use ABS-like resin, which offers improved strength compared to standard resin while remaining suitable for general printing.
Standard resins tend to be brittle, while specialist resins such as flexible or transparent resins are available at higher cost for specific use cases.
What’s a good laser cutter?
If cutting is the goal rather than engraving, a CO₂ laser cutter is the preferred option due to its ability to cut a wide range of materials.
CO₂ lasers can cut wood, acrylic, plastics, leather, and card, including clear acrylic, which is not possible with diode lasers.
How do I laser cut clear materials?
Clear acrylic can only be reliably cut using a CO₂ laser cutter. Diode lasers are unable to cut clear materials.
A CO₂ laser can cut clear acrylic cleanly and consistently, including thicker sheets depending on wattage.
What materials should not be cut on a laser cutter?
Polycarbonate cannot be effectively cut with a laser due to its material properties.
Materials such as PVC, ABS, PTFE, epoxies, resins, artificial leather, and chrome-tanned leather should never be cut as they release highly toxic gases.
What size 3D printer bed do I realistically need for prop and functional parts?
A standard 220 x 220 mm build plate, such as on an Ender 3, is sufficient for most prop and functional parts.
Larger parts can be split into sections for printing, making large-scale builds achievable even on smaller printers.
Is an enclosed 3D printer required for higher temperature materials?
Enclosed printers are strongly recommended for printing higher temperature materials reliably and consistently.
While it is possible to print materials such as ABS and PETG on open-frame printers, results are far less predictable.
Direct drive vs Bowden extruder – which is better?
Direct drive extruders are far better suited for flexible and detailed prints due to reduced filament travel distance.
Bowden systems can struggle with flexible filaments, making direct drive a worthwhile upgrade for most printers.
Is a resin printer suitable for functional parts?
Resin printers are primarily designed for high-detail prints and produce far finer surface quality than filament printers.
Functional parts are possible using ABS-like or specialist resins, but material choice is critical.
What post-processing equipment is needed for resin printing?
Resin prints require a wash station to remove uncured resin after printing.
A UV curing station is also required to fully cure the print and achieve final strength.
Can a single 3D printer cover beginner and advanced use cases?
Yes. Modern enclosed printers can handle both beginner-friendly printing and advanced materials.
Enclosed high-speed printers such as the Creality K1 Max or Bambu Lab systems are capable of covering both use cases.
What laser power is required for cutting plywood, acrylic and MDF?
MDF is extremely difficult to cut with a laser and is generally unsuitable.
For plywood and acrylic, CO₂ lasers in the 40–60W range handle thinner materials, while thicker stock requires higher wattage.
CO₂ laser vs diode laser – which is better for maker projects?
CO₂ lasers are better suited for cutting a wide range of materials, including clear acrylic.
Diode lasers are more affordable and suitable for engraving, but are limited in cutting capability.
How thick can you realistically cut wood and acrylic on a hobby laser?
Lower power diode lasers typically cut up to around 3mm thickness.
Higher power machines may reach 6–8mm depending on material type, colour, and density.
Is air assist necessary for clean laser cuts?
Air assist improves cut quality by clearing debris and protecting the laser lens.
It generally produces cleaner edges and more consistent results across most materials.
When does a CNC router make more sense than a laser cutter?
CNC routing is required for materials that are hazardous or impossible to laser cut.
This includes metals, polycarbonate, and other high-impact or toxic materials.
Can a desktop CNC handle aluminium and other soft metals?
Yes. Desktop CNC machines are well suited for cutting aluminium and soft metals.
CNC becomes necessary when printed plastics reach their mechanical limits.
Can these tools realistically be used in a home environment?
Some tools require proper extraction, particularly CNC machines, sanding equipment, and spray painting.
Alternatives such as enclosed systems and filtered extraction units can make home use viable.
What additional hardware is required beyond the machine itself?
For most machines, the tool itself is sufficient to produce reliable results.
Resin printers are the exception, as they require wash and curing equipment for proper output.
What machine should I use for cutting vinyl and stickers?
For cutting adhesive vinyl, decals, and stickers, a dedicated vinyl cutter is required. The most common option is a Cricut machine, with alternatives from Silhouette and Brother.
These machines use the manufacturer’s own software and are well suited for signage, decals, labels, and vinyl-based projects.

Software


What CAD programs do you use?
I primarily use Autodesk Fusion 360 for CAD and 3D modelling. It is a powerful tool for creating, modifying, and assembling parts from scratch.
As a hobbyist, I use the free licence with project limitations and archive completed projects as I move on.
What creative software do you use?
I use the Adobe Creative Cloud suite, including Illustrator, Photoshop, Premiere, and Adobe Express.
Illustrator is used for layouts, panels, and vector work, while Photoshop is used for creative effects and visual treatments.
What software should I use for slicing filament-based 3D prints?
I use the manufacturer’s slicing software for my printers, as it is configured specifically for the hardware.
Alternatives such as Cura and PrusaSlicer offer similar functionality, but the bundled slicer is usually the simplest and most reliable option.
What software should I use for slicing resin prints?
For resin printing, I use ChituBox, which is free and widely supported.
It handles positioning, scaling, duplication, and support generation and includes profiles for many printers and resins.
What software is best for PCB design?
For simple PCB designs, Fritzing is an easy-to-use, visual tool suited to beginners.
More advanced or production-ready designs are typically created in KiCad and exported as Gerber files for manufacturing.
What CAD software is best for beginners?
Tinkercad is ideal for absolute beginners and allows simple modelling and manipulation of shapes.
Windows 11 also includes 3D Builder, which is excellent for quick edits, cuts, and model preparation.
What CAD software is best for mechanical or functional parts?
Fusion 360 is well suited for mechanical and functional parts, offering precision modelling and assembly tools.
While FreeCAD is a capable free alternative, Fusion 360 provides a more streamlined workflow for complex parts.
Do I need different software for artistic models and functional parts?
Artistic and visual work is best handled with creative tools such as Illustrator or Photoshop.
Functional and mechanical parts are better created in CAD software such as Fusion 360.
What file formats do you use between CAD, slicers, and laser software?
For 3D printing, models are exported as STL or 3MF files from CAD software.
For laser cutting, vector designs are exported as colour-separated PDFs, often created in Illustrator.
What software do you use for laser cutting and engraving?
I use the manufacturer’s software supplied with my laser cutter, importing colour-separated PDF files.
Third-party software such as LightBurn is popular, but I stick with the bundled tools designed for the machine.
What software do you use for CNC routing?
I use the manufacturer’s software supplied with the CNC machine.
While third-party options exist, the bundled software is typically the most straightforward and reliable.
How do you prepare models for 3D printing?
Model orientation is the most important factor, as layer direction affects strength.
Large or complex shapes are often split into multiple parts to improve print reliability and reduce support requirements.
What software do you use for electronics and schematics?
I use Fritzing for creating electronics layouts and schematics.
Its visual, breadboard-style approach suits my workflow and level of electronics complexity.
What software do you use to program microcontrollers?
For Arduino, ESP32, and similar boards, I use the Arduino IDE for compiling and uploading code.
For more complex projects, I write code in VS Code and then deploy it via the Arduino IDE or directly to devices such as Raspberry Pi.
Can you do everything with free or open-source software?
Yes, it is entirely possible to build projects using free and open-source software.
Some free tools include limitations, but open-source options often avoid these constraints entirely.
What software should I use for creating EVA foam patterns?
Pepakura Designer is well suited for creating flat patterns from 3D models.
It allows models to be unfolded into cut, fold, and join lines suitable for EVA foam and card.
How do I edit an STL that someone else has created?
STL files are mesh-based and can be difficult to edit directly.
Tools such as 3D Builder, Tinkercad, or Blender can be used to split, clean, or modify existing models.
How do I scale armour to fit properly?
Armorsmith Designer allows STLs to be scaled accurately using a custom body avatar.
By entering body measurements, armour and costume parts can be resized correctly before printing.

Components


Which is the best microcontroller?
There is no single best microcontroller, because the right choice depends entirely on what you are trying to build. Different projects place very different demands on processing power, connectivity, size, and complexity.
For simple projects that control lights, buttons, or basic electronics, a small microcontroller is often the best fit. More complex projects that involve networking, displays, or data storage may require something more capable.
Arduino Nano, Uno, or BLE?
Arduino Uno is a good general-purpose board and is physically larger, which makes it easy to prototype with and connect modules to. It is often the default choice for learning and early experimentation.
Arduino Nano offers similar functionality in a much smaller form factor, making it easier to embed inside props. The Nano BLE adds Bluetooth capability while keeping the compact size, which is useful for wireless projects.
ESP32, Arduino, or Raspberry Pi?
Arduino boards are well suited for controlling LEDs, buttons, motors, and simple sensors. They are reliable, easy to program, and ideal for projects that do not require networking.
ESP32 adds built-in Wi-Fi and Bluetooth, making it suitable for more advanced projects such as beacons, displays, and connected devices. Raspberry Pi is a full single-board computer and is used when video output, storage, and an operating system are required.
What’s the difference between a microcontroller and a single-board computer?
A microcontroller is designed to control hardware directly, such as switches, LEDs, motors, and sensors. It runs a single program and focuses on predictable, real-time behaviour.
A single-board computer, such as a Raspberry Pi, is effectively a small computer. It runs an operating system and is used when you need video output, networking, file storage, or complex software.
When should I use an Arduino instead of an ESP32?
Arduino boards are ideal for straightforward projects where you only need to control hardware reliably. They are simpler to configure and have fewer variables to manage.
ESP32 is better suited to projects that require Bluetooth, Wi-Fi, or more complex logic. It offers more power and flexibility, but also introduces more complexity.
When do I need Bluetooth or BLE in a project?
Bluetooth or BLE is required when a project needs to communicate wirelessly with another device. This might be a phone, another prop, or a nearby sensor.
Typical use cases include proximity detection, remote control, beacons, and Internet of Things style projects where low power usage is important.
What’s the difference between Bluetooth and BLE?
BLE stands for Bluetooth Low Energy and is designed for battery-powered devices that need to conserve power. It is commonly used in sensors, trackers, and beacons.
Classic Bluetooth is used for higher data tasks such as audio streaming and file transfer. BLE offers lower power consumption, faster connection times, and longer range.
What power supply should I use for small electronics projects?
Rechargeable batteries are generally the best choice for small electronics projects. They reduce running costs and are more practical for repeated use.
NiMH battery packs and 18650 lithium cells are commonly used, while disposable batteries are better suited to very low-power or temporary builds.
What batteries do you use in props and portable builds?
NiMH airsoft batteries are reliable for outdoor props and tolerate cold conditions and full discharge well. They are commonly used in larger builds.
For smaller props, 18650 lithium cells offer a good balance between size, capacity, and rechargeability.
How do I safely power LEDs from a microcontroller?
Standard LEDs require a resistor to limit the current flowing through them. Without a resistor, LEDs can easily be damaged.
The resistor value depends on the LED type and voltage being used. Online calculators make it easy to determine the correct value.
How do I safely power addressable LEDs?
Addressable LEDs such as Neopixels require their own dedicated power supply, usually 5V. They should not be powered directly from a microcontroller.
As the number of LEDs increases, current draw rises quickly. A separate power source ensures stable operation and prevents damage.
What’s the difference between addressable LEDs and standard LEDs?
Standard LEDs are simple components that turn on when power is applied. They are typically single-colour and require individual wiring to control each LED.
Addressable LEDs include a data line that allows individual LEDs to be controlled independently. This makes it possible to create colour changes, animations, and complex lighting effects.
Addressable LEDs are far more flexible for visual props, but they require more planning around power and wiring compared to standard LEDs.
How do I control high-power devices with a microcontroller?
Microcontrollers cannot directly control high-voltage or high-current devices. Instead, relays or MOSFETs are used as electronic switches.
These components allow a low-voltage signal from the microcontroller to safely control higher-powered devices such as lights, motors, or mains-powered equipment.
When should I use a relay instead of a MOSFET?
Relays are best suited for switching mains AC devices and provide electrical isolation. They are ideal for slow or infrequent switching.
MOSFETs are better for DC loads and fast switching. They are commonly used for LEDs, motors, and battery-powered systems.
How do I play sound effects from a microcontroller?
Dedicated sound boards can play simple sound effects without needing a microcontroller. These are useful for basic trigger-based audio.
For more complex audio, modules such as the DFPlayer can play MP3 files from an SD card and be controlled by a microcontroller.
What speakers and amplifiers work well for props?
Small props can use compact speakers, piezo buzzers, or repurposed phone speakers. These are easy to hide and require minimal power.
Larger builds may use car speakers and dedicated amplifiers to achieve higher volume and better sound quality.
Do I need an amplifier to play sound from a microcontroller?
Some sound modules include built-in amplifiers and can drive small speakers directly. This is sufficient for many prop-based applications.
Larger speakers or louder audio output will require an external amplifier to avoid distortion and low volume.
What sensors do you commonly use in interactive projects?
Buttons and switches are the most commonly used sensors due to their reliability and simplicity. They behave consistently across environments.
More complex sensors are avoided where changing light, motion, or environmental conditions could affect reliability.
How do I connect buttons and switches reliably?
Mechanical buttons can generate multiple signals when pressed quickly. This can cause false triggers.
Software debouncing ensures that only deliberate button presses are registered by the microcontroller.
When does it make sense to design a PCB instead of using breadboards?
Breadboards and prototype wiring are suitable for one-off builds and early experimentation. They are quick and flexible.
Designing a PCB becomes worthwhile when building multiple units or when space, reliability, and repeatability are important.

General Questions


Where do I start if I want to build my first maker project?
Start by picking one thing you genuinely want to make, then find an existing model for it. Get a cheap beginner printer, slice the model, and print it, then finish it with sanding, paint, and whatever extras you want.
Expect the first attempt to fail or need rework. The learning happens when you repeat the print, fix what went wrong, and gradually build confidence from there.
How do you decide which tool or process to use for a project?
Start with the intended use and environment. Ask who is using it, where it will live, and whether it needs to be durable, weatherproof, lightweight, or highly detailed.
Then match the tool to the shape and material. Flat panels lean toward laser cutting, detailed display parts lean toward resin, big functional parts lean toward filament printing, and metal parts lean toward CNC.
How long do your projects typically take to build?
It depends on the scope and whether it already exists as a model. If there is an off-the-shelf model, it can be as quick as downloading, slicing, and printing within hours.
If it only exists in your head and needs CAD, prototyping, testing, and refinement, a small project can take days and a larger one can take months. It is very much a how-long-is-a-piece-of-string question.
How much do maker projects usually cost?
Costs vary wildly, but the biggest spend is often the tools and consumables rather than one specific project. Printers, cutters, materials, and consumables are where most of the money goes.
Once you already own the equipment, individual builds can be surprisingly cheap, especially for printed parts where you can estimate cost by how much filament or resin is used. The 10-metre rule also saves money because it stops you chasing perfection where it does not matter.
Do I need a workshop or garage to be a maker?
No. You can build a lot from a small room, including 3D printing, resin printing, laser cutting, vinyl cutting, electronics, and general assembly.
A workshop becomes necessary when you move into large machines or messy industrial tools like lathes, bandsaws, pillar drills, or a dedicated paint booth. For most maker projects, a small dedicated space is enough.
How do you prototype and test ideas before committing to a final build?
I iterate. I will do quick prototypes and test prints to validate the concept before investing time in a refined version.
The more units you plan to make, the more important this becomes, because mistakes scale with quantity. Prototype, then field test for fit, robustness, and real-world use before committing to a production run.
How do you avoid overengineering simple projects?
Define the MVP, the minimum viable product, and build only what is required for that first. Keep materials, electronics, and features to the absolute minimum needed to meet the goal.
It is easier to start with something simple and reliable and then add upgrades. Building something overcomplicated first often leads to unreliable results and painful redesigns to strip features back out.
How do you balance realism, durability, and cost in props?
Durability comes from knowing material limits and choosing the right material for the job. Over time you learn when cheap materials are fine and when you need something stronger and more robust.
Realism depends on how close the item will be seen. If it is viewed from a distance, the 10-metre rule applies, but if it will be handled or examined up close, that is when realism is worth extra time and effort.
Another way to think about it is the iron triangle. If you want it fast and high quality, it will not be cheap, and if you want it cheap and high quality, it will take time.
Can these projects be adapted or scaled for different uses?
Yes, many builds can be repurposed, reused, or adapted once the core idea works. A technique that succeeds once can often be applied to new props or new objectives.
Scaling can mean size or quantity. You can upscale or downscale a design to fit a different use, and if you move from a one-off to building multiples, you may need cleaner wiring, better assembly methods, or even a PCB to make production faster and more reliable.
Where do you source parts and materials?
If I need something quickly, I use Amazon and accept the premium for fast delivery. If cost matters and time does not, I order from AliExpress, especially for electronics and bulk items.
AliExpress works well when you know exactly what you are buying and you check specs carefully, because returns can be painful. For sheet materials, paints, and craft consumables, I also use local suppliers and UK craft retailers depending on what the project needs.


Get more help

If you couldn't find the answer to your question in our FAQs, you can always contact Harry Badger to ask a question, commission a project, or just want to say hi, I'm always happy to connect with fellow makers..