Top 10 Best heat knife for foam in 2026

Last Updated - 6/14/2026

🏆Best Choice

RONGTER

RONGTER 4 in 1 Hot Wire Electric Foam Cutter Kit, Styrofoam Cutting Tool 15W/ 6V with Case, Heated Foam Carving Knife Kit (Toolbox White)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•【Smooth and Efficient Cutting】Rongter hot wire foam cutter is FCC certified, heats up faster and more evenly than normal electric heating pens, The U-shaped and F-shaped tip can be heated up to 842℉/450℃ during use, and the 2in/4in tip can be heated up to 350℃. The hot wire cutting pen can cut foam block from any angle smoothly and efficiently just like butter, seals the edges clearly, and eaves No Debris
•【4 In 1 Tools】Rongter 4 in 1 hot wire foam cutter kit includes FCC Approved 15W high power foam cutter and UL approved power supply, U-Blade, F-Blade（The U and F nibs can be used with a heating wire to cut about 3.75 inches）, 2 Inch Straight Blade*1, 4 Inch Straight Blade*1, 5 hot wires for replacement, brushes and a holder, plus a tool case for easy storage. We are 24 hours a day to serve you
•【Easy to Use】Rongter 4 in 1 electric styrofoam cutting tool comes with a metal support frame for resting the heated tip, so you don't worry about where to rest it when you want a break from your work. After it cools down, please wipe the heating needle with copper brush to avoid blackening and hardening caused
•【Sturdy and Safe Design】Upgraded electric styrofoam cutter is made of stainless steel and plastic material with super overheat protection. Designed with a touch button and LED light, provides safety tips when using our foam cutter. No breaking and no taking apart problem
•【Wide Applications】The cutting pen is hot enough to be applied to different kinds of materials, such as foam board, pearl cotton, KT board, EPS, EVA, XPS, PE, etc. not for plastic, high-density sponge, memory foam, nylon fabric. You can use it for Halloween costumes, handmade practice, commercial artwork, even model-making lessons by kids at school

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$45.99

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Fiskars

Fiskars 163050-1001 Fingertip Craft Knife, 7 Inch, Orange

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Ideal for cutting intricate details on paper, cloth, chipboard, overlays and other lightweight crafting materials
•Ergonomically sculpted finger-loop handle acts as a place to rest your finger for maximum control, sensitivity and comfort
•Handle shape prevents knife from rolling off the table
•Included safety cap protects the blade during storage
•Included safety cap protects the blade during storage

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$7.49

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Hotorda

Foam Cutter Electric Hot Wire Cutter Pen 10CM Foam Board Cutter with Stand 18W Hot Knife Styrofoam Cutting Pen with Apaptor Foam-Cutting Tool for White Sofe Styrofoam,Arts,Handcraft

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Electric Styrofoam cutter pen with adapter for low density styrofoam, art modeling, student craft practice, jingle making, creative modeling. Use electric heating to melt the foam for cutting, it is normal to produce odor during the melting process. Please move the cutting pen quickly when using it; use it in a well-ventilated environment and wear a mask.
•The Hot Wire Foam Cutting Pen cuts foam quickly and smoothly, sealing the edges without leaving any debris! (When the cutting pen is fully preheated to a certain temperature) you can cut templates or foam blocks at any angle and then process them into the desired shape.
•Easy to use, check that the cutting pen tail is plugged into the adapter interface; plug the adapter plug into the power outlet; set the side switch of adapter to the ON position, it can be used normally (switch to 'OFF' for off state). Wait 30 seconds before starting work to preheat and reach a temperature. Thus, obtain the best cutting effect High quality cutting. Cutting can only be done in a close range of 9 cm of foam.
•Electric foam cutting tool kit equipped with a metal bracket stand. When you want to rest, you can put the cutting pen on the bracket. When not in, you can turn off the switch and put it on top to cool; in addition, the handle has a good anti-skid effect, and you don't have to about slipping off during work.
•This foam cutting pen can cut materials with a maximum ignition point of 200℃, suitable only for white soft foam low-density polystyrene foam not suitable for kt boards and posters; please do not purchase high-density polystyrene foam. If you have any questions, please feel free to contact me

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$15.90

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COOLTOP

Cooltop Hot Wire Foam Cutter kit, 18W Styrofoam Knife Cutter Electric Hot Wire Foam Cutting Tool, Heated Foam Carving Knife Kit with Cleaning Pen for Foam Board, Pearl Cotton, EPP, KT Board, EPS

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•【Smooth and Efficient Cutting】- All hot wire foam cutter tips can heat up to temperature 100℃ within 10s. The Hot wire cutting pen can cut foam board or foam block from any angle smoothly and efficiently.
•【Sturdy and Safe Design】- Upgrade Styrofoam Cutter is made of stainless steel and plastic material with overheat protection. Designed with ON/OFF button and LED reminder light, it provides safe tips when using our foam cutter. No flopping, no breaking, no taking apart problem.
•【Easy to Use】- 3 in 1 Styrofoam Cutting pen, including Hot Wire Tip, Holing Tip, and Engraver Tip, you can cut any shade you desired. Also it is easy to replace the wires or holing tips during working, making the process convenient and time saving. The cleaning pen that we provides helps you clean the tips easily after cutting.
•【Wide Applications】- The cutting pen is hot enough to be applied on low-density foam, such as foam board, foam block, pearl cotton, EPP, KT board, EPS and so on, but not to be applied on cutting very high-density hard material.
•【Product Usage Tips】- Though our hot wire foam cutter tips have safe design and overheat protection, please read our tips carefully before using: 1) We suggest you take a rest if the foam cutter had worked for 30mins; 2) Before changing any tips, please turn off the switch and let the hot knife cool down first.

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$27.99

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DOMINOX

DOMINOX Hot Knife Foam Cutter, Foam Cutting Tool Kit, Heavy-duty Case Styrofoam Cutter for Cutting Foam Board Insulation, EPP, EPS, XPS, EVA, EPE, PU, KT Board, Sponge, Nylon

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•【SPRING-LOADED SAFETY TRIGGER SWITCH】: Because the hot knife cutting tool can reach the working temperature in a few seconds, the spring-loaded safety trigger switch can effectively avoid the danger caused by too high temperature. In order to improve the service life, we do not recommend working for a long time (Notice: Use the hot knife use at 15-second intervals and allow it to cool for about 15 seconds in between!).
•【WIDE APPLICATIONS】: Foam cutter usually used for packaging, construction, pitched roof insulation, external wall insulation composite system. For professionals, craftsmen or DIY enthusiasts to provide better help in commercial and industrial use. Foam cutter can cut lightweight foam, KT board, polyurethane, polyethylene, EPS, XPS, EPP, EVA, EPE, PU, polyester foam, sponge, rubber, nylon and fiber, etc.
•【SMOOTH OPERATION】: There is a pure copper induction coil inside the styrofoam cutter, which adopts innovative circuit design to heat fast and evenly. Styrofoam cutter can give you the same experience as cutting butter and bread with a knife. The cutting process is very smooth, and the cutting effect is flat and perfect.
•【ADJUSTABLE TEMPERATURE】: The adjustment knob on the top of the foam cutting tool has 16 positions to adjust temperature and power. The wide adjustment range can meet the needs of most industries and jobs. The wider the scale on the knob, the greater the power and heat. If you can't master the temperature control temporarily, we suggest you practice several times on the foam waste (NOTICE: If the red light flashes after pressing the switch, push the adjustment knob forward to increase).
•【NICKEL-CHROMIUM ALLOY BLADE】：The hot knife foam cutter adopts high-quality nickel-chromium alloy blades, which is not afraid of high temperatures and has a long service life. Blade Temperature can come up to 1000°F in 7s (NOTICE: If you prefer the high temperature to make the foam smell, use the mask when you use it).
•【SIMPLE INSTALLATION】: Just loosen the screw, slide the blade under the square pressure plates until snug, then insert the blade into the blade holder to start to use. The metal hook at the tail is convenient for hanging, which is convenient for next use.
•【PACKAGE INCLUDES】: Hot knife foam cutter, 1 x 6" blade, 1 x 8" blade, hex wrench, cleaning brush.

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$59.99

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GENFIZA

Hot Wire Foam Cutter, 4 in 1 Electric Hot Knife Foam Cutting Tool, 100-240v / 18w Styrofoam Cutter with Marker Pen

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•【4 in 1 Cutting Pen】18w, 100-240v high power foam cutter with Ul approved power supply and On / Off safety button. 12cm & 7cm engraver tip, 5cm holing tip, 18cm hot wire tip, 10m replacement steel wire, cutter holder.
•【Smooth and Efficient Cutting】All hot wire foam cutter tips can heat up to a temperature of 150℃ within 10s. Great for hand DIY, you can cut foam board or foam blocks from any angle to make the shape you want. It cuts Styrofoam smoothly, seals edges cleanly, and doesn't chip!
•【Practicality and Instruction】Before using, please read the instruction book in the box. Christmas, and New Year are coming. Using a marker pen to paint the patterns you want and then use a hot wire tip, holing tip, or engraver tip to cut the pattern. You can replace the tips easily according to different needs.
•【Safety】Overheating protection, equipped with a holder to place the heating needle, to ensure your safety and convenience. The indicators of the tool are also strictly adjusted. Children should use it under adult supervision.
•【Kind Tips】1) Please let it heat up for a while before using; 2) Before replacing any pen, please turn off the switch and let the hot knife cool down first; 3) We recommend you take a rest if the foam cutter had worked for 30mins.
•【24h Customer Service】If you have any other problems, please do not hesitate to contact us. We are here all the time and we are willing to do our best for you.

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$24.99

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RONGTER

RONGTER 3 in 1 Foam Cutter Tool Kit, Up to 662 Degrees Fahrenheit Blue Foam Cutter Electric Foam Cutting Tool,Heated Foam Carving Knife Kit

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•EASY CUTTING FOAM: This 3-in-1 foam cutting tool set includes 1 x 2in pen head and 2 x 4in pen heads with different sizes of interchangeable cutter heads for cutting different shapes and sizes of foam, making the operation easier. Replacing the tips is easy: just pull out the old pen tip and insert the new one.
•SMOOTH AND EFFICIENT CUTTING: Rongter foam cutter is FCC certified, heats up faster and more evenly than normal electric heating pens, The 2in/4in tip can be heated up to 662℉/350℃.The cutting pen can cut foam block from any angle smoothly and efficiently just like butter, seals the edges clearly, and leaves No Debris
•SAFE TO USE: The pen has an on/off switch for easy control without having to plug and unplug repeatedly. The package also includes a stand for stable placement, reducing the risk of accidents. The automatic protection function prevents the pen from overheating and causing damage.
•PREMIUM QUALITY MATERIAL: The cutting pen tip is made of imported material with excellent conductivity for more effective cutting.
•UPGRADED FOAM CUTTER: Do not use while charging. Designed for small, delicate foam projects, not for thick foam. Please warm up before use; the cutting nibs emit red light before cutting. Rest after 30 minutes of use and clean the cutting with the included steel brush to prevent residue buildup and maintain conductivity for future use.

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$26.99

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RONGTER

RONGTER Air Cooled, Electric Hot Knife - Foam Cutting Tool with Blades & Accessories Use Foam Cutter for Engraving and DIY Handmade

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Rest Periods: Allow the tool to rest for 1 minute after every 5 minutes of use to prolong its lifespan. For first-time use, set the knob to the maximum setting and wait for the blade to heat up
•Adjustable Power: The tool has an adjustable knob for controlling temperature and power, and a built-in air cooling system for continuous use
•Wide Application: It can cut various materials like XPS, EPS, low-density sponge, plastic extruded board, foam, pearl cotton, KT board, etc. Suitable for both commercial and DIY projects
•Package Includes: The kit comes with a heat cutter, Large slotting board,Bending pliers,two straight 6in blades,two straight 8in blades and two straight 12in curved blades, a hard plastic case, a hex wrench, and a cleaning brush
•Clean and Smooth Cut: The hot knife cuts styrofoam smoothly and cleanly, sealing edges without debris and allowing for precise shaping

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$119.99

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WINONS

WINONS Hot Knife Cutting Tool, Effective as a Foam Board and Stencil Cutter, with Upgraded Blades and Retainers

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•UPGRADE: In our previous models, the blades and retainers came with two separate pieces, and the retainer broke in some cases. For the WHK0007 Hot Knife Tool, we have upgraded the blades and retainers to be one piece with improved metal, minimizing the possibility of retainer breakage.
•VERSATILITY: WHK0007 Hot Knife Cutter has 3 Upgraded blade nozzles with different shapes that allows it to use on a variety of materials such as plastic, stencil, foam board, fabric, and even for rope cutting.
•PACKAGE INCLUDES: Total of 6 pieces which includes - 25W handle, 3 hot knife nozzles, 1 safety stand, 1 user manual.
•TESTING: While the free hand method empowers you to bring your artistic ideas into reality, we recommend testing on a sample of foam or plastic you’ll be using to acquire hands on practice. The tool is suitable for low density foams and thin plastic sheets with up to 3 mm thickness
•CUSTOMER CARE: We offer a 2-month money back guarantee on all of our products. Customers can contact us 24/7 for help and answers to questions as they arise. We offer money back guarantee. We offer risk-free shopping

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$16.99

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RONGTER

RONGTER Air Cooled, Electric Hot Knife - Foam Cutting Tool with Blades & Accessories Use Foam Cutter for Engraving and DIY Handmade

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Rest Periods: Allow the tool to rest for 1 minute after every 5 minutes of use to prolong its lifespan. For first-time use, set the knob to the maximum setting and wait for the blade to heat up
•Adjustable Power: The tool has an adjustable knob for controlling temperature and power, and a built-in air cooling system for continuous use
•Wide Application: It can cut various materials like XPS, EPS, low-density sponge, plastic extruded board, foam, pearl cotton, KT board, etc. Suitable for both commercial and DIY projects
•Package Includes: The kit comes with a heat cutter, two straight blades (6-inch and 8-inch), a hard plastic case, a hex wrench, and a cleaning brush
•Clean and Smooth Cut: The hot knife cuts styrofoam smoothly and cleanly, sealing edges without debris and allowing for precise shaping

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$69.99

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