Resin or LCD 3d Printers? Compared by Specs
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When comparing resin vs LCD 3d printer options, you often encounter overlapping terminology. This comparison looks at the ELEGOO Mars 4 Ultra and a replacement film pack for the Saturn 3 Ultra. Both products relate to resin printing, but they serve different roles. The Mars 4 Ultra is a complete desktop printer using MSLA technology. The Saturn 3 item is a consumable accessory, specifically an ACF release liner film. Understanding these distinct categories helps you choose the right hardware or spare part for your workflow.
Key differences
| Aspect | ELEGOO Mars 4 Ultra 9K Resin Printer | ELEGOO Saturn 3 Ultra ACF Film 5-Pack |
|---|---|---|
| Product Type | Desktop 3D Printer | Replacement Accessory |
| Printing Technology | MSLA (Resin) | LCD (Accessory) |
| Build Volume / Dimensions | 17 x 22 x 22 inches | 12.6 x 8.78 x 0.43 inches |
| Screen / Display | 7-inch 9K Mono LCD | Not listed |
| Connectivity | Wi-Fi (2.4G/5G) | Not listed |
Which one should you choose?
Choose ELEGOO Mars 4 Ultra 9K Resin Printer if
- You need a complete machine to print complex models with high resolution.
- You want built-in Wi-Fi for wireless file transfer.
- You require a device with a Linux operating system for faster processing.
Choose ELEGOO Saturn 3 Ultra ACF Film 5-Pack if
- You already own an ELEGOO Saturn 3 Ultra printer.
- You need spare ACF release liner films to maintain print quality.
- You are looking for a consumable part rather than a new printer.
Verdict: Choose the ELEGOO Mars 4 Ultra if you need a fully functional 3D printer capable of producing detailed resin models. Select the Saturn 3 Ultra film pack only if you are maintaining an existing printer and need replacement liners. These products do not compete directly as one is hardware and the other is a supply.
Resin Printer vs Film Pack
printing technology
The ELEGOO Mars 4 Ultra is a complete desktop resin 3D printer using MSLA technology. It features a 7-inch 9K mono LCD with an 8520 × 4320 resolution and 18 µm XY resolution. This allows you to print complex models with crisp details. The LCD is protected by 9H hardness tempered glass. In contrast, the ELEGOO Saturn 3 Ultra ACF Film is not a printer. It is a replacement release liner film pack. It is designed specifically for the Saturn 3 Ultra printer. While both relate to resin printing, one is the machine and the other is a consumable part. They do not compete as direct alternatives.
build quality
The Mars 4 Ultra is a substantial machine weighing 18 pounds. Its dimensions are 22 inches in width and height, and 17 inches in length. It is colored black. The build includes a Linux OS with 4GB RAM for smooth operation. The Saturn 3 Ultra film pack is much smaller. The box measures 12.6 inches in length, 8.78 inches in width, and 0.43 inches in height. The film itself is 0.3mm thick. It is transparent. The film uses composite technology to prevent adhering to the LCD screen. One side is frosted, facing the screen, while the other is smooth. It is UV stable and resistant to chemicals and wear.
connectivity
The Mars 4 Ultra includes built-in Wi-Fi connectivity. It supports both 2.4G and 5G networks with a transfer speed of 6-10 Mbps. This allows you to transfer files effortlessly without cumbersome cables. The printer also has a 4-inch HD IPS touch screen with an 800 × 480 pixel resolution. It supports 12 languages. The Saturn 3 Ultra ACF film pack has no electronics. It does not have Wi-Fi, screens, or digital interfaces. It is a purely mechanical consumable item. You cannot connect it to a network or use a display with it. It serves only as a protective layer for the printer it is designed for.
leveling
The Mars 4 Ultra features a 4-point leveling system. This makes setup easy for you. The printer claims that after one leveling, you do not need to repeat it. This ensures perfect prints every time. The build plate has a laser-carved surface to improve adhesion. The ACF release liner film also aids adhesion. It has less release tension, which helps models come off easily. However, the film itself does not perform leveling. It is a passive component. The leveling process is handled entirely by the Mars 4 Ultra printer hardware. The film just sits on the build plate during the printing process.
compatibility
The Mars 4 Ultra is a standalone printer. It is compatible with standard resin materials. You load resin into the tank and start printing. The Saturn 3 Ultra ACF film is not a printer. It is compatible only with the ELEGOO Saturn 3 Ultra resin 3D printer. It is not compatible with the Mars 4 Ultra. The film dimensions are 290*195mm. It is a 5-pack of release liners. You must buy the Saturn 3 Ultra printer to use this film. The Mars 4 Ultra does not require this specific film pack to operate, as it uses its own ACF release liner film system designed for its specific build volume.
Choose Your ELEGOO Resin Setup
Users needing a complete desktop printer
You need a fully functional MSLA resin printer. The Mars 4 Ultra provides a 7-inch 9K mono LCD with 18 µm XY resolution for crisp details. It includes a Linux OS with 4GB RAM, Wi-Fi connectivity, and a 4-point leveling system. This is the machine required to start printing.
Owners of Saturn 3 Ultra printers
You already own a compatible printer and need maintenance supplies. This pack contains five ACF release liner films sized 290x195mm with 0.3mm thickness. The films resist chemicals and UV light, preventing adhesion issues. They ensure models release easily without wrinkles or scratches, maintaining print quality over time.
Printers seeking high-resolution output
You prioritize fine detail in your resin prints. The Mars 4 Ultra features an 8520 × 4320 resolution screen and 18 µm XY precision. Its mono LCD and tempered glass protection support high-quality results. The included Wi-Fi and touch screen streamline the workflow for complex model fabrication.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | ELEGOO Mars 4 Ultra 9K Resin Printer | High-detail resin printing with wireless connectivity | Check price of ELEGOO Mars 4 Ultra 9K Resin Printer on Amazon |
| 2 | ELEGOO Saturn 3 Ultra ACF Film 5-Pack | Saturn 3 Ultra maintenance | Check price of ELEGOO Saturn 3 Ultra ACF Film 5-Pack on Amazon |
The products compared
ELEGOO Mars 4 Ultra 9K Resin Printer
Best for: High-detail resin printing with wireless connectivity
- Printing Technology
- Resin (what this guide is about)
- Build Volume
- 6.5 × 6.04 × 3.06 inches
- Leveling Type
- 4-point leveling system
- Features
- Wi-Fi
- Color
- Black
- Release Film Type
- ACF
View on Amazon: ELEGOO Mars 4 Ultra 9K Resin Printer Affiliate link
The ELEGOO Mars 4 Ultra is a desktop MSLA resin printer designed for high-detail output. It features a 7-inch 9K mono LCD with 18 µm XY resolution, protected by 9H hardness tempered glass. The unit runs on a Linux OS with 4GB of RAM and supports Wi-Fi for file transfers. It includes a 4-point leveling system and a 4-inch HD IPS touch screen. This machine suits users who need crisp details and faster operation speeds.
Pros
- 7-inch 9K mono LCD with 8520 x 4320 resolution
- 18 µm XY resolution for fine details
- Linux OS with 4GB RAM for smooth operation
- Built-in Wi-Fi supporting 2.4G and 5G networks
- 4-point leveling system with laser-carved build plate
Cons
- Large footprint measuring 22 inches by 22 inches by 17 inches
- Heavy build at 18 pounds
- Limited to 2.4G and 5G Wi-Fi bands
Good fit if
- You prioritize high resolution and fine detail in resin prints
- You want a Linux-based system for faster file loading
- You prefer wireless connectivity for transferring print jobs
Skip if
- You have limited desk space due to its large dimensions
- You prefer FDM technology over resin printing
- You need a lighter, more portable unit
Verdict: ELEGOO Mars 4 Ultra Resin Printer delivers high-resolution output with a robust Linux OS and wireless connectivity. It fits users who value detail and speed but can accommodate its substantial size and weight.
ELEGOO Saturn 3 Ultra ACF Film 5-Pack
Best for: Saturn 3 Ultra maintenance
- Printing Technology
- LCD (what this guide is about)
- Release Film Type
- ACF
- Dimensions
- 12.6 × 8.78 × 0.43 inches
View on Amazon: ELEGOO Saturn 3 Ultra ACF Film 5-Pack Affiliate link
This is a replacement ACF release liner film for the ELEGOO Saturn 3 Ultra resin 3D printer. It measures 290 by 195 mm with a 0.3 mm thickness. The composite technology prevents adhesion to the LCD screen. One side is frosted for screen placement, and the other is smooth. The film resists UV light and chemicals, ensuring durability during the printing process.
Pros
- 0.3 mm thickness prevents breaking during printing
- ACF composite technology prevents LCD adhesion
- UV stable and chemical resistant material
- Non-stick surface reduces wrinkles and bubbles
Cons
- Only compatible with Saturn 3 Ultra
- Sold as a 5-piece pack
- Does not include the printer itself
Good fit if
- You own an ELEGOO Saturn 3 Ultra printer
- You need replacement release film for maintenance
- You want UV-stable film for resin printing
Skip if
- You use a different printer model
- You need the printer hardware
- You prefer single-use films
Verdict: ELEGOO Saturn 3 Ultra ACF Release Film is a durable replacement liner for Saturn 3 Ultra owners. It fits users who need reliable film that resists UV degradation and sticking.
Specifications side by side
| Spec | ELEGOO Mars 4 Ultra 9K Resin Printer | ELEGOO Saturn 3 Ultra ACF Film 5-Pack |
|---|---|---|
| Build Volume | 6.5 × 6.04 × 3.06 inches | not stated |
| Printing Technology | MSLA | not stated |
| Leveling Type | 4-point leveling system | not stated |
| Features | Wi-Fi | not stated |
| Color | Black | Transparent |
| Release Film Type | ACF | ACF |
| Dimensions | 17 × 22 × 22 inches | 12.6 × 8.78 × 0.43 inches |
| Weight | 18 pounds | not stated |
| Size | Mars 4 Ultra | Saturn 3 Ultra-5PCS |
| Model | MARS 4 Ultra | not stated |
Frequently asked questions
Is resin printing the same as LCD printing?
They are closely related but not identical. LCD printing is a method used within resin 3D printing. It uses a liquid photopolymer resin cured by an LCD screen. The ELEGOO Mars 4 Ultra uses this MSLA technology with a 7-inch 9K mono LCD. This setup provides high resolution for detailed prints. You need resin tanks and build plates to complete the process.
What does 9K resolution mean for 3D prints?
9K refers to the pixel density of the LCD screen. The ELEGOO Mars 4 Ultra features a 9K mono LCD with an 8520 × 4320 resolution. This high pixel count results in an 18 µm XY resolution. You get sharper edges and finer details in your models. It reduces the visible grid lines often seen on lower resolution screens.
Do I need replacement film for my resin printer?
You need it for maintenance. The ELEGOO Saturn 3 Ultra ACF Film 5-Pack is a durable replacement liner. It resists UV degradation and sticking. While the Mars 4 Ultra is a complete printer, you may need similar consumables over time. These films protect the build platform. They ensure consistent release of your printed objects from the tank.
How large is a desktop resin 3D printer?
Size varies by model. The ELEGOO Mars 4 Ultra measures 22 inches in width and height, with a length of 17 inches. It weighs 18 pounds. You need ample desk space for this footprint. The compact design fits on most workbenches. Consider the weight when moving the unit. It is substantial enough to remain stable during printing.
What operating system do resin printers use?
Many modern resin printers use Linux. The ELEGOO Mars 4 Ultra runs a robust Linux OS. This allows for wireless connectivity and easier file management. You can control the printer remotely. The system supports standard slicing workflows. It provides a stable environment for long print jobs. Check your specific model for OS details.
What is MSLA technology in resin printers?
MSLA stands for Masked Stereolithography. It is the core technology behind LCD resin printers. The ELEGOO Mars 4 Ultra uses MSLA to cure resin layer by layer. A UV light source shines through an LCD mask. This exposes the liquid resin to harden it. You get high precision and smooth surface finishes. It is the standard for detailed hobbyist printing.