Splitting a 3D model can make parts easier to orient, fit within a printer’s build area, or print with fewer supports. It also creates a seam that becomes part of the finished object’s load path. For a stronger, better-aligned result, choose the split around the part’s loads and print constraints, then prepare and join the mating faces using a method suited to the material.
Why split a 3D print?
A split is useful when a whole model cannot fit on the build plate or when separate sections can be printed in more suitable orientations. It may also reduce support material. Prusa’s modeling guidance discusses these benefits and the need to design parts with assembly in mind.
For FDM (also called material extrusion), print orientation affects mechanical behavior because the part is built in layers. The relevant choice depends on the forces the part will face and its geometry; there is no single orientation that is strongest for every shape. A split may improve how sections print, but it adds an interface whose location and fit matter.
Choose a split location around loads and appearance
Start with the part’s expected loads, visible faces, printer build limits, and features likely to need supports. If the design allows it, avoid placing the seam across the most demanding load path. Also consider whether the seam will be visible and whether it can be finished without damaging important features.
PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minute#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
The mating surfaces need enough area and suitable geometry for the intended joining method. Locating features such as pegs can help the sections align; Prusa notes they may also contribute to strength. Check that the parts fit together as intended before applying adhesive or using a fusion process.
Prepare and align the mating faces
- Check the fit. Bring the sections together without adhesive or fusion. Confirm that locating features engage and that the faces meet as designed.
- Clean the surfaces. Prusa advises keeping glue surfaces smooth and free of grease or dirt to help achieve an invisible seam.
- Consider light sanding. It can help in some cases, but whether it is appropriate depends on the geometry, surface finish, material, and joining method. Do not remove so much material that the fit or alignment features are compromised.
- Control alignment during assembly. Position the sections carefully and follow the selected product or process instructions, including any required assembly and completion time.
Choose a joining method for the material and application
There is no universally strongest glue or joining process established for all 3D-print materials. Compare the options against the material, expected loading direction, joint area and shape, alignment tolerance, visible finish, whether the joint needs to be removable, and the handling requirements.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
| Approach | What the cited source establishes | What to check for your part |
|---|---|---|
| Two-part epoxy | Stratasys lists it as an option for joining PolyJet parts in its guide to joining 3D-printed parts. | Confirm that the adhesive manufacturer’s technical instructions support the specific material and intended use. The PolyJet example does not establish compatibility with every FDM filament or resin. |
| Cyanoacrylate | Stratasys also discusses cyanoacrylate in the context of PolyJet parts in the same guide. | Check material compatibility and application requirements for the exact adhesive and print material; the cited example is not a universal FDM recommendation. |
| Glue or friction-based fusion | A Georgia Tech PLA project describes glue and friction-based fusion. | Treat these as methods described for that PLA project, not proof that they suit every filament, part geometry, or use. Follow the applicable process guidance. |
The cited sources cover different materials and print processes, so their examples should not be treated as interchangeable. Select a method only after checking its instructions for your material and application; do not infer a strength ranking from the fact that a method is listed.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Use a practical design-to-assembly workflow
- Identify the part’s loads, appearance requirements, support-sensitive areas, and build-volume constraints.
- Choose a split and print orientation that improve fit or printability while keeping the seam away from the most demanding load path where practical.
- Add locating geometry, such as pegs, if it suits the design, and verify the fit before joining.
- Make the mating faces smooth and clean; sand lightly only if suitable for the material and joining method.
- Select an adhesive or mechanical/fusion approach based on the actual material and intended use, and follow its manufacturer’s or process instructions.
- Assemble with alignment controlled and let the joining method complete as directed.
If you need to split a model in software, Prusa documents a cut tool in PrusaSlicer. The cut itself does not determine seam strength: the resulting interface still needs appropriate geometry, fit, and a compatible joining method.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
