Comgrow 0.4mm Brass Nozzle 25-Piece vs Comgrow 235x235mm Textured PEI Spring (2026): Key Differences
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You are comparing comgrow 25pcs mk8 ender 3 vs pei sheet magnetic flexible. Both items are Comgrow accessories for FDM printers, but they serve completely different functions. One is a consumable nozzle kit for the extruder. The other is a build surface for the heated bed. This guide breaks down the specs to help you decide which part you actually need for your printer setup.
Key differences
| Aspect | Comgrow 0.4mm Brass Nozzle 25-Piece Kit | Comgrow 235x235mm Textured PEI Spring Steel Sheet |
|---|---|---|
| Primary Material | Brass | Spring stainless steel, PEI |
| Dimensions | 0.4 mm nozzle diameter | 235 x 235 mm sheet |
| Included Tools | Cleaning needles, hex wrench, tweezers, storage box | Not listed |
| Build Surface Type | Not listed | Textured PEI |
Which one should you choose?
Choose Comgrow 0.4mm Brass Nozzle 25-Piece Kit if
- You need replacement nozzles for your extruder.
- You want a kit with cleaning tools and storage.
- You print with standard 1.75mm filaments.
Choose Comgrow 235x235mm Textured PEI Spring Steel Sheet if
- You need a new build plate for your heated bed.
- You want easy model removal via flexing.
- You print on beds up to 235 x 235 mm.
Verdict: Choose the nozzle kit if your extruder is clogged or worn. Pick the PEI sheet if your build plate is damaged or you want better adhesion. These parts address different issues in your 3D printing workflow.
Nozzles Versus Build Surface
Core Function
Product A is a kit of 25 brass nozzles designed for the extruder. It helps you replace worn tips to maintain print quality. Product B is a 235x235mm build plate. It provides the surface where your model is created. One item feeds filament. The other holds the print. They serve entirely different roles in your printer. You need both for a complete setup. This comparison highlights their distinct purposes rather than overlapping features.
Material Quality
Product A uses high-quality brass for the nozzles. Brass offers good abrasion, heat, and corrosion resistance. It ensures smooth inner walls for consistent extrusion. Product B combines spring stainless steel with PEI powder. The steel provides flexibility and strength. The PEI surface offers excellent adhesion and heat resistance. Brass is ideal for melting filament. The steel-PEI combo is ideal for holding layers. Each material is chosen for its specific job in the printing process.
Size and Fit
Product A features a standard 0.4 mm nozzle diameter. The error is less than 0.02 mm. This precision reduces clogging risks. It fits MK8 style extruders. Product B has fixed dimensions of 235 x 235 mm. It is designed for specific bed sizes. You can cut it to fit other models. The nozzle size affects detail. The bed size affects build volume. Product A is uniform. Product B is a large sheet. Both have specific dimensional requirements for compatibility.
Printer Compatibility
Product A works with Creality Ender 3 series and CR 10 series printers. It also fits Ender 5 Pro and Ender 3 S1 models. It accepts 1.75mm PLA and ABS. Product B fits ELEGOO Neptune 3 Pro, Neptune 4, and Anycubic Kobra. It also works with Ender 3, Ender 5, and CR 20 series. It supports PLA, PETG, PEEK, and ABS. Both items have wide support for popular FDM printers. Check your specific machine model to ensure a proper fit for either accessory.
Usability and Tools
Product A includes tools for maintenance. It comes with nozzle cleaning needles, a hexagon wrench, and tweezers. A storage box keeps small parts organized. This makes replacements easy. Product B focuses on ease of print removal. You flex the spring steel sheet to pop prints off. No glue or tape is needed. It sticks well to magnetic beds. One kit helps you fix the extruder. The sheet helps you remove the part. Both simplify different parts of your workflow.
Which Comgrow Accessory Fits You
You need spare extruder tips for maintenance
This kit includes 25 brass nozzles with a 0.4 mm diameter. Brass offers good abrasion and heat resistance. The set also contains cleaning needles, a hex wrench, and tweezers. These tools help you clear clogs and adjust the extruder easily. You can replace worn tips to maintain consistent print quality over time.
You want easy model removal from the bed
This textured PEI sheet is coated on spring stainless steel. The flexible surface allows you to bend the plate slightly to pop prints off. This design eliminates the need for glue or tape. You get reliable adhesion during printing and simple removal afterward, reducing print anxiety.
You require a durable build surface
The PEI layer withstands numerous heat cycles without degrading. It fits 235x235mm beds and sticks well to magnetic surfaces. This sheet supports various filaments, including PLA and ABS. You get a stable, high-strength platform that handles temperature changes better than traditional tape solutions.
You need a complete tool set for nozzles
This product provides 25 nozzles plus essential maintenance tools. You receive stainless steel cleaning needles and a hexagon wrench in a storage box. The nozzles have smooth inner walls with low diameter error. This all-in-one approach keeps your extruder ready for quick swaps and clean prints.
The products compared
Comgrow 0.4mm Brass Nozzle 25-Piece Kit
Best for: Standard Ender 3 nozzle replacement
- Primary Material
- Brass
- Nozzle Diameter
- 0.4 mm
View on Amazon: Comgrow 0.4mm Brass Nozzle 25-Piece Kit Affiliate link
You get 25 brass MK8 nozzles with a 0.4 mm diameter. These nozzles feature smooth inner walls and an extruder error under 0.02 mm. The kit includes cleaning needles, a hex wrench, tweezers, and a storage box. They fit Creality Ender 3 and CR 10 series printers. This set supports 1.75 mm PLA and ABS filaments. It is a practical replacement option for standard hotends.
Pros
- 25-pack quantity for extended use
- 0.4 mm nozzle diameter for standard detail
- Includes cleaning needles and hex wrench
- Compatible with Ender 3 and CR 10 series
Cons
- Brass material wears faster than hardened steel
- Limited to 0.4 mm diameter only
- No mention of included storage box durability
Good fit if
- You need a bulk supply of standard nozzles
- You print with PLA or ABS filament
- You own a Creality Ender 3 or CR 10 printer
Skip if
- You require larger nozzle diameters for speed
- You print with abrasive materials like carbon fiber
- You need hardened steel nozzles for longevity
Verdict: Comgrow 25-Pack 0.4mm Brass Nozzles provides a complete replacement kit for standard Ender 3 printers. You should buy this if you need reliable 0.4 mm nozzles and included maintenance tools.
Comgrow 235x235mm Textured PEI Spring Steel Sheet
Best for: ELEGOO Neptune 3 Pro and 4 users
- Primary Material
- Spring stainless steel, PEI
- Dimensions
- 235 x 235 mm
- Build Surface Type
- Textured PEI
- Build Plate Size
- 235x235mm
- Weight
- 1.06 pounds
View on Amazon: Comgrow 235x235mm Textured PEI Spring Steel Sheet Affiliate link
This Comgrow build plate uses a textured PEI surface on spring stainless steel. It measures 235 by 235 mm and weighs 1.06 pounds. The magnetic backing allows for easy removal of prints by flexing the sheet. It fits ELEGOO Neptune 3 Pro, Neptune 4, and Anycubic Kobra models. You get a reliable surface that handles heat cycles well without needing glue or tape.
Pros
- Textured PEI surface for strong adhesion
- Spring stainless steel base for flexibility
- Magnetic backing for easy print removal
- Compatible with ELEGOO Neptune 3 Pro and 4
Cons
- Limited to 235x235mm build area
- One-sided textured finish
- Requires compatible magnetic bed
Good fit if
- You own an ELEGOO Neptune 3 Pro or 4
- You want easy print removal without glue
- You need a durable surface for heat cycles
Skip if
- You require a larger build volume than 235mm
- Your printer lacks a magnetic bed system
- You prefer a smooth PEI surface over textured
Verdict: Comgrow PEI Sheet 235x235mm Magnetic is ideal for users with ELEGOO Neptune 3 Pro or 4 printers who value quick release. It offers a practical upgrade for those tired of adhesion issues.
Specifications side by side
| Spec | Comgrow 0.4mm Brass Nozzle 25-Piece Kit | Comgrow 235x235mm Textured PEI Spring Steel Sheet |
|---|---|---|
| Primary Material | Brass | Spring stainless steel, PEI |
| Dimensions | not stated | 235 x 235 mm |
| Nozzle Diameter | 0.4 mm | not stated |
| Build Surface Type | not stated | Textured PEI |
| Build Plate Material | not stated | PEI, Spring Steel |
| Build Plate Size | not stated | 235x235mm |
| Weight | not stated | 1.06 pounds |
| Size | not stated | 235*235mm |
| Color | not stated | One-Sided Textured PEI |
| Model | not stated | COMCXTB2-CA1 |
Frequently asked questions
Can I use the Comgrow 0.4mm brass nozzles on my Ender 3?
Yes, this kit is designed as a replacement for standard Ender 3 printers. The 0.4mm diameter is the industry standard for most FDM prints. You get 25 pieces, which helps you maintain consistent flow without frequent interruptions. It ensures your extruder keeps pushing filament smoothly.
Does the PEI sheet fit the Creality Ender 3?
No, this specific sheet is sized for 235x235mm build areas. The Ender 3 typically uses a 220x220mm bed. You should check your printer model before buying. This item is listed as ideal for ELEGOO Neptune 3 Pro or 4 users who need that specific footprint.
What is included in the Comgrow nozzle kit besides the tips?
The package contains 25 brass nozzles. It also includes essential maintenance tools for your printer. You will find cleaning needles to clear clogs. A hex wrench helps with installation. Tweezers are also provided to handle small parts safely during your next maintenance session.
Is the PEI sheet magnetic?
Yes, the build surface is made from spring steel. This material allows the sheet to flex, which helps release prints easily. The magnetic property means it sticks securely to your heated bed. This setup offers a practical upgrade for users tired of adhesion issues on standard beds.
How big is the Comgrow PEI build plate?
The build plate measures 235x235mm. This is slightly larger than the standard 220x220mm size. The surface features a one-sided textured PEI coating. This texture helps models stick better during printing while allowing for easy removal once the job is done and the bed cools down.
What material are the Comgrow nozzles made from?
These nozzles are made from brass. Brass offers good heat resistance and abrasion resistance for standard filaments like PLA and ABS. The 0.4mm diameter is versatile for most general printing tasks. You should buy this kit if you need reliable replacements for your standard extruder setup.