---
product_id: 635633662
title: "Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg"
brand: "siraya tech"
price: "¥18447"
currency: JPY
in_stock: true
reviews_count: 12
category: "Siraya Tech"
url: https://www.desertcart.jp/products/635633662-siraya-tech-fibreheart-pet-cf-3d-printer-filament-high-strength
store_origin: JP
region: Japan
---

# Heat resistant up to high temps 1.75mm precision diameter High tensile strength & rigidity Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg

**Brand:** siraya tech
**Price:** ¥18447
**Availability:** ✅ In Stock

## Summary

> ⚡ Print Strong, Print Smart — Elevate Your 3D Game with Siraya Tech Fibreheart!

## Quick Answers

- **What is this?** Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg by siraya tech
- **How much does it cost?** ¥18447 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/635633662-siraya-tech-fibreheart-pet-cf-3d-printer-filament-high-strength)

## Best For

- siraya tech enthusiasts

## Why This Product

- Trusted siraya tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightweight Yet Durable:** Optimized for strength-to-weight ratio, perfect for drone parts, mechanical assemblies, and sports gear.
- • **Unmatched Strength & Rigidity:** Carbon fiber mesh reinforcement delivers superior mechanical performance for demanding professional prints.
- • **Moisture-Resistant Performance:** Low moisture absorption keeps prints consistent and reliable, but proactive drying is key to perfection.
- • **Versatile for Pros & Hobbyists:** From industrial-grade components to custom creative projects, this filament adapts to your high standards.
- • **Precision Dimensional Stability:** Engineered PET matrix minimizes warping and shrinkage, ensuring flawless, functional prototypes every time.

## Overview

Siraya Tech Fibreheart PET-CF is a premium 1.75mm diameter, 1kg spool of carbon fiber reinforced PET filament designed for high strength, exceptional rigidity, and superior dimensional stability. Its intelligent fiber reinforcement technology creates a durable mesh within the PET matrix, reducing warping and enhancing heat resistance. Ideal for professionals and advanced hobbyists, this filament excels in producing lightweight, tough parts for drones, mechanical assemblies, and sports equipment. Optimal print results require careful moisture control and high-temperature printing setups.

## Description

Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg | Carbon Fiber Reinforced PET, High Strength & Rigidity, Easy Print, Dimensionally Stable, Aluminum Foil Sealed Bag : desertcart.co.uk: Business, Industry & Science

Review: Nice stuff, not a nightmare to print - Bought this to print a high temp tool head for my Voron printer. It wasn't too hard to print, but you'll need to achieve some quite high temperatures so you won't be printing this on a big standard printer. Once annealed it's quite tough, light and very brittle. It's quite hard to keep dry, you'll need the ceramic bead drying stuff, dessicant won't cut it and an active heater needs to be warmer than your typical filament dryer will go; some people dry it in an air fryer I hear, but don't use the one you cook food in, it's not safe; buy one specifically for drying this and annealing in salt. Haven't used the whole roll yet but this will be my go to next time I need more.
Review: Tough Filament - This is the first PET CF filament I tried so I cannot compare it to others. All I can say is the resulting prints are very tough and rigid. Dry, dry, dry, absolutely necessary with this filament as you're no doubt aware. Straight out of the vacuum sealed bag it was pretty good but after a day the prints were rough. Heated dryer was purchased (Creality Official Space PI Filament Dryer Plus) and this resulted is perfect prints. Attached pic, two bottom components printed from freshly opened bag. Top after drying for 12 hrs at 65 deg C. Note the glossy textured finish and lack of layer lines, its actually better than depicted. The print between opening the bag and drying the filament went straight into the bin, ragged and rough. This was circa 12hrs exposed to UK cold and humidity. I thought I would try and pull the print apart to see just how strong it was, absolutely no chance. It opened up a little at the clamping end but went no further. Overall, great value for money, print using the specified parameters, keep it dry.

## Features

- Improved Performance & Reliability Our PET-CF filament is a high-performance composite material that combines polyethylene terephthalate (PET) with carbon fibers. The PET-CF 3D filament ensures easy printability, good layer bonding and excellent mechanical properties. It offers increased rigidity, improved dimensional stability and significantly higher strength.
- Intelligent fiber reinforcement technology: Carbon fibers form a mesh skeleton within the PET matrix, which significantly improves the mechanical properties, heat resistance, and dimensional stability. Thanks to the internal stress release, no deformation occurs.
- Superior dimensional stability: The highly regular molecular chain structure of PET and the rigid benzene rings result in better mechanical properties and less deformation under long-term stress compared to PA and PC materials. Our PET-CF filament reduces warping and shrinkage, ensuring your prints maintain their precise dimensions and shapes – crucial for functional parts and complex designs.
- LIGHTWEIGHT AND DURABLE Our PET-CF filament offers a perfect balance between longevity and a lightweight profile. Its low moisture absorption makes it ideal for applications where both strength and weight are crucial factors. It is an excellent material for making robust but lightweight components such as drone parts, mechanical assemblies and sports equipment.
- Versatile Applications: Whether you need reliable, high-strength components as a professional or work on detailed, functional projects as a hobbyist – our PET-CF filament is versatile enough to meet a variety of requirements. Its easy printability and mechanical properties make it suitable for everything from industrial prototypes to custom sports equipment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CSPFL7MB |
| Best Sellers Rank | 3,821 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 166 in Filament 3D Printing Materials |
| Brand | Siraya Tech |
| Brand Name | Siraya Tech |
| Colour | PET-CF Black 1kg |
| Country Of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 235 Reviews |
| Global Trade Identification Number | 00850019574630 |
| Item Diameter | 1.75 Millimetres |
| Item Weight | 1.2 Kilograms |
| Item diameter | 1.75 Millimetres |
| Item weight | 1.2 Kilograms |
| Manufacturer | Siraya Tech |
| Manufacturer Part Number | 2.5kg PET-CF Black |
| Material | PET-CF |
| Material Type | PET-CF |
| Model Number | 3003 |
| Number of Items | 1 |
| Special Features | Combination of PET and carbon fiber, intelligent fiber reinforcement technology, excellent dimensional stability |
| Special feature | Combination of PET and carbon fiber, intelligent fiber reinforcement technology, excellent dimensional stability Special feature Combination of PET and carbon fiber, intelligent fiber reinforcement technology, excellent dimensional stability See more |
| Unit Count | 1000.0 gram |

## Product Details

- **Brand:** Siraya Tech
- **Colour:** PET-CF Black 1kg
- **Item diameter:** 1.75 Millimetres
- **Item weight:** 1.2 Kilograms
- **Material:** PET-CF

## Images

![Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg - Image 1](https://m.media-amazon.com/images/I/713TvuvfSiL.jpg)
![Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg - Image 2](https://m.media-amazon.com/images/I/71-VLQmVE5L.jpg)
![Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg - Image 3](https://m.media-amazon.com/images/I/71nfIHSPvsL.jpg)
![Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg - Image 4](https://m.media-amazon.com/images/I/71PLVQOZuHL.jpg)
![Siraya Tech Fibreheart PET-CF 3D Printer Filament, High Strength, Black 1kg - Image 5](https://m.media-amazon.com/images/I/61sltLj0XxL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice stuff, not a nightmare to print
*by M***A on 2 October 2025*

Bought this to print a high temp tool head for my Voron printer. It wasn't too hard to print, but you'll need to achieve some quite high temperatures so you won't be printing this on a big standard printer. Once annealed it's quite tough, light and very brittle. It's quite hard to keep dry, you'll need the ceramic bead drying stuff, dessicant won't cut it and an active heater needs to be warmer than your typical filament dryer will go; some people dry it in an air fryer I hear, but don't use the one you cook food in, it's not safe; buy one specifically for drying this and annealing in salt. Haven't used the whole roll yet but this will be my go to next time I need more.

### ⭐⭐⭐⭐⭐ Tough Filament
*by G***L on 2 January 2026*

This is the first PET CF filament I tried so I cannot compare it to others. All I can say is the resulting prints are very tough and rigid. Dry, dry, dry, absolutely necessary with this filament as you're no doubt aware. Straight out of the vacuum sealed bag it was pretty good but after a day the prints were rough. Heated dryer was purchased (Creality Official Space PI Filament Dryer Plus) and this resulted is perfect prints. Attached pic, two bottom components printed from freshly opened bag. Top after drying for 12 hrs at 65 deg C. Note the glossy textured finish and lack of layer lines, its actually better than depicted. The print between opening the bag and drying the filament went straight into the bin, ragged and rough. This was circa 12hrs exposed to UK cold and humidity. I thought I would try and pull the print apart to see just how strong it was, absolutely no chance. It opened up a little at the clamping end but went no further. Overall, great value for money, print using the specified parameters, keep it dry.

### ⭐⭐⭐⭐⭐ Excellent engineering filament
*by R***N on 29 November 2025*

Bought this to upgrade some parts on my Voron which are currently ASA CF but I wanted the extra rigidity and temperature resistance of annealed PET CF. Yes, it is brittle compared to some other filaments but as long as your careful loading it's not an issue. Loaded it straight out of the box, downloaded the settings from the Siraya website and threw a benchy at it. Didn't bother with any of my usual calibration routines and was very impressed with the results. This will be my new go-to when I want strong heat resistant parts.

## Frequently Bought Together

- Siraya Tech Fibreheart PET-CF 3D Filament - Carbon Fiber Reinforced, High Strength & Rigidity, Easy Print, Dimensionally Stable, Aluminum Foil Sealed Bag - for Strong and Precise Parts (Black, 1kg)
- Polymaker PLA PRO Filament 1.75mm 1kg, Tough & High Rigidity Black 3D Printing Filament, PolyLite PLA PRO 3D Printer Filament 1.75mm, Print with Most 3D Printers
- Polymaker Fiberon PET-CF17 3D Printing Filament Black 1.75mm 0.5kg, Excellent Stable Stiffness - Fiberon Carbon Fiber Reinforced PET 3D Printer Filament, Ideal for Jigs and Fixtures

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-24*