Thermo hot knife for cutting polystyrene 170mm POWERMAT (PM-NTDS-150T)
Are you looking for a professional, fast and precise solution for cutting Styrofoam and other polymer materials? The 170mm thermal hot knife for cutting Styrofoam from the renowned POWERMAT brand (PM-NTDS-150T) is a top-notch tool designed for builders, craftsmen, facade painters and DIYers. Forget about laborious manual cutting, full of opaque Styrofoam crumbs - with a hot knife, every cut will be smooth, clean and extremely precise.
Reliability, impeccable workmanship, the best materials and high-quality steel are the key features of POWERMAT products. Tools of this brand are successfully used by professionals in many fields, as their exceptional durability and strength enable smooth work even in the most demanding conditions.
Why choose the POWERMAT PM-NTDS-150T thermal knife for polystyrene?
Traditional methods of cutting Styrofoam with ordinary saws or knives result in a lot of waste material flying in all directions, and the cuts are often uneven and unprofessional. The Thermo Hot Knife works on the principle of high temperature, which means that the material literally melts during cutting. The result is a perfectly smooth edge without splinters and static dust, saving you hours of cleaning on the construction site or in the workshop.
This versatile thermal cutter is equipped with a precise potentiometer for temperature adjustment, giving you complete control over the work depending on the thickness and type of material you are working on. The device is extremely lightweight, ergonomically designed and ready for immediate use.
Key benefits of using a hot knife

Clean cuts without waste: Thermal cutting prevents the polystyrene from crumbling, which means a clean working environment without annoying small particles.
Adjustable temperature: The built-in potentiometer allows for stepless heat adjustment up to 500 °C for optimal adaptation to different polymers.
Versatile use: Ideal for cutting polypropylene (PP), polyvinyl chloride (PVC) and polystyrene (Styrofoam).
Ergonomic and lightweight design: With a weight of only 1.37 kg and a well-thought-out handle design, the device ensures comfortable work without hand fatigue, even during prolonged use.
Complete set in a case: The product comes in a practical case for safe storage and easy transport, along with a cleaning brush and assembly wrench.

Technical data and specifications
The POWERMAT PM-NTDS-150T thermal knife combines power, speed and safety in one compact housing. The exact technical specifications of the device are listed below:

Model/SKU: PM-NTDS-150T
Power supply: 230V / 50Hz
Motor power: 150 W
Maximum temperature: 500 °C
Intermittent operating time: 15 sec / 45 sec (heating and cooling cycle for long device life)
Blade length: 17 cm (170 mm)
Knife weight: 1.37 kg
Protection class: II

What does the package contain?
Upon purchase, you receive a complete kit that allows you to start working immediately:

1x POWERMAT 150W thermal hot knife
1x Blade length 170 mm
1x Cleaning brush (wire brush for cleaning debris from the blade)
1x Allen key for quick and safe blade changes
1x Durable transport case

Application in practice
The POWERMAT thermal knife is indispensable in the construction of facades (installation of polystyrene insulation), modeling, decoration and wherever high precision is required in the shaping of plastics. Thanks to the rapid heating, you can start working almost immediately. The advantage of intermittent operation (15 seconds of operation / 45 seconds of pause) ensures that the device does not overheat, which extends the service life of the heating element and the blade.
See how a similar thermal knife works in practice in the video link below:
Demonstrative video of the thermal knife in action
Frequently Asked Questions (FAQ)
1. What materials can I cut with this thermal knife?
The POWERMAT PM-NTDS-150T thermal knife is designed for cutting polymer elements. It is extremely effective in cutting expanded polystyrene (Styrofoam), polypropylene (PP) and polyvinyl chloride (PVC).
2. How does the temperature setting work on this device?
The knife is equipped with a convenient potentiometer that allows easy and precise regulation of the blade temperature up to a maximum of 500 °C. This allows you to perfectly adjust the temperature to the thickness and hardness of the material you are cutting.
3. What does intermittent operating time 15 sec / 45 sec mean?
This is a safety and technical operating cycle that prevents the device from overheating. It is recommended to keep the heating switch active for up to 15 seconds (during cutting) and then take a 45 second break (during loading material or marking) to allow the device and blade to cool optimally and maintain a long service life.


Responsible persons:
POWERMAT - PH Powermat TMK Bijak Sp., Jawna ul. Obrońców Poczty Gdańskiej 97, 42-400 Zawiercie, Poland, bok@powermat-hurt.pl, (+48) 326703968
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Check the hot knife, 170 mm blade, power cord and temperature controller before use.
• Place the device on a stable, non-flammable work surface.
• Connect it to a 230 V / 50 Hz electrical network.
• Use the potentiometer to set the appropriate temperature depending on the material.
• Wait for the blade to heat up.
• Slowly and evenly guide the heated blade through the Styrofoam or other suitable polymer material.
• Don't press too hard – let the heat do most of the cutting.
• After finishing work, switch off the appliance and wait for the blade to cool completely before putting it away.
The device has 150 W of power, adjustable temperature up to approximately 500 °C, a blade length of 170 mm and is intended for cutting polystyrene, PVC and polypropylene. The expected operating interval is 15 seconds of work / 45 seconds of break.

Useful tips for work:
• Set the temperature as low as possible to achieve a clean and smooth cut.
• When cutting Styrofoam, guide the blade slowly and evenly, without jerking movements.
• Before cutting a large amount of material, make a test cut on a scrap piece.
• For straight cuts, use a suitable guide or ruler, but make sure it does not come into contact with the hot blade.
• When working, observe an interval of 15 seconds on / 45 seconds off to prevent the device from overheating.
• Clean the blade regularly to remove any stuck-on material, but only after the device is switched off and has completely cooled down.
• Kit includes 170mm blade, brush, Allen key and case.
• When cutting PVC and other polymers, ensure that the work area is well ventilated.

Warnings:
⚠️ The blade heats up to approximately 500 °C - risk of severe burns and fire.⚠️ Never touch the hot blade during operation or immediately after switching off.⚠️ Always unplug the device from the power supply before cleaning, changing the blade or performing maintenance.⚠️ Observe the operating interval of 15 seconds of work / 45 seconds of rest to prevent the device from overheating.⚠️ Do not leave the device unattended when it is connected to the power supply.⚠️ Do not use a damaged cable, plug, blade or housing.⚠️ Use the device only in a well-ventilated area, as harmful fumes can be produced when polymers are heated.⚠️ Do not cut materials for which the device is not intended and do not use open flames near the work area.⚠️ Use the hot knife away from flammable materials and surfaces.⚠️ Keep the device out of the reach of children and store it only after the blade has completely cooled down.

Same summary

The 170mm thermal hot knife for cutting polystyrene is a specialized tool designed primarily for precise and easy cutting of foam, polystyrene and similar lightweight materials. It allows users who often work with heat-sensitive materials in hobby, modeling or small home projects to make clean and straight cuts without chipping the edge. For very thick or hard materials, it should be noted that this type of cutter is less suitable - for such needs, it is recommended to use more powerful or specialized cutters. The advantage of this model is mainly in its practicality and ease of use in a home environment.

Recommendation source: Enaa guides and team experiences.

User view

The thermal hot knife for Styrofoam is especially handy for anyone who creates models, insulates spaces, or makes creative products from foam or Styrofoam. Due to its ease of use, it is also suitable for less experienced users who expect precision and smooth cuts without the hassle of cleaning edges.

Many users choose Powermat products because of their good balance between quality, ease of use, and reliability in the home environment.

Why buy at Enaa

At Enaa, you can choose from a wide range of cutters and tools, where detailed technical information makes it easy to compare individual models. A clear display of key features also helps you decide on the most suitable product for your needs.

Answers to frequently asked questions

What materials is this thermal knife suitable for?

The thermal hot knife is primarily intended for cutting Styrofoam, foam and other similar lightweight materials, where precision and cleanliness of the cut are important.

Can I use it to cut harder materials like wood or metal?

This type of cutter is not suitable for hard materials such as wood, metal or ceramics. It is recommended to use it only for softer materials such as Styrofoam, as otherwise the blade or tool may be damaged.

What is important when using a thermal knife safely?

It is recommended to use the thermal knife on a stable surface and avoid touching the hot blade. Always turn it off when not in use and make sure there are no flammable materials nearby.

How is a thermal knife maintained?

After each use, wait until the blade has cooled completely, then wipe it with a dry cloth. We also recommend periodically inspecting the electrical cord and connectors to prevent any potential damage.

Why do people choose Powermat when purchasing these types of tools?

Powermat users primarily appreciate the reliability of the products and their suitability for hobby use, as well as the availability of spare parts and ease of use in everyday situations.

Description updated: April 2026