Hot Melt M2-M8 Knurled Insert Nuts Pressure Head Kit for 3D Printer

Add strong, reusable metal threads to your 3D printed parts with this complete knurled insert press kit. The set includes 6 brass Nuts for 3d printer (M2, M3, M4, M5, M6, M8), a universal adapter for 936 soldering irons, and 5 brass knurled nuts. Heat-set brass inserts into plastic parts to create durable screw holes that withstand repeated assembly and disassembly without stripping.

How It Works

• Heat your soldering iron to approximately 200-250°C (392-482°F).
• Attach the adapter to your 936 soldering iron, then screw on the desired brass tip.
• Place a brass knurled nut onto the heated tip (it will be held by friction/light pressure).
• Position the tip over the pre-designed hole in your 3D printed part (hole size should match insert outer diameter).
• Press gently – the heat melts the plastic around the insert.
• Remove the iron – the insert remains embedded as the plastic cools and hardens.
• Result: A perfect metal-threaded hole ready for screws.
• brass Tips for Efficient Heat Transfer

Unlike cheap steel or aluminum tips, these pressure heads are made from brass – the same material used in high-end soldering iron tips:

• Heats quickly – less waiting between inserts
• Transfers heat evenly – melts plastic consistently
• Releases inserts cleanly – brass nut doesn't stick to brass
• Lasts longer – resists oxidation and wear
• Adapter Fits 936 Soldering Irons

The included adapter is designed for 936 universal soldering irons – one of the most common soldering station platforms in workshops worldwide. If you already own a 936 station (or compatible unit like Hakko 936 clones), you already have the heat source. Just attach the adapter and start installing inserts.

Brass Pressure Head Nuts Application:

1. Enclosures & Cases: Repeated opening/closing without stripping
2. Functional parts: Bolted assemblies that stay tight
3. Moving mechanisms: Screws that hold adjustment points
4. Modular designsParts that assemble/disassemble often
5. Repairs: Fix stripped holes in existing prints
6. Professional productsFinished look, reliable assembly

Knurled Insert Nuts Specification:

1. Product Type: Hot melt knurled insert pressure head kit
2. Tip Sizes Included: M2, M3, M4, M5, M6, M8
3. Tip Material: brass
4. Adapter Type: Fits 936 universal soldering iron
5. Included Nuts: 5 brass knurled inserts (sizes vary by kit)
6. Application: Installing threaded inserts into 3D printed plastic parts
7. Compatible Plastics: PLA, ABS, PETG, Nylon, TPU (any thermoplastic)

 Features:

• Complete 6-Tip Set: Includes M2, M3, M4, M5, M6, and M8 brass pressure heads – covers all common thread sizes for 3D printing projects.
• Universal Compatibility: Adapter fits standard 936 soldering irons (widely used in 3D printing workshops).
• Durable brass Construction: Tips made from high-quality brass for efficient heat transfer and long service life.
• Enhanced Stability: Creates secure, permanent threaded inserts – prevents loose nuts and improves print assembly quality.
• Easy Installation: Simple, user-friendly process – no advanced skills required. Heat the tip, press into printed part, insert brass nut.
• Clean Insertion Effect: Produces smoother, cleaner insert placement compared to manual pressing or gluing.

Easy Installation – No Advanced Skills Required

• You don't need to be a professional machinist or have special tools. The process is straightforward:
• Design or drill a hole in your 3D print slightly smaller than the insert's outer diameter.
• Heat the appropriate tip on your soldering iron.
• Place insert on tip, press into hole, wait 2-3 seconds.
• Remove iron, let cool for 5 seconds.
• Done. Your part now has metal threads.
• Benefits for 3D Printing Enthusiasts

• Prevents Loose Nuts: Standard nuts eventually work loose from vibration or repeated use. Heat-set inserts are permanently embedded – they won't spin or pull out.
• Improves Print Quality: Assemblies with threaded inserts fit together more precisely. No more wobbling joints or misaligned screw holes.
• Enables Disassembly: Need to open an enclosure for maintenance? Want to upgrade a part? Heat-set inserts let you unscrew and reassemble repeatedly without damaging the plastic.
• Cleaner Aesthetic: No nuts visible on the outside of your prints. Inserts are invisible from the exterior, giving your projects a professional, finished look.