QSJ 180Pcs Threaded Inserts Heat Set Inserts Kit M2.5x4x3.5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials

i bought these for a few random projects i had or will have so it just sat in my drawer, soldering iron tips and everything. but when i needed these inserts oh boy did they work beautifully. i don't have the most professional soldering iron but the soldering iron tip this comes with fits great and fits the little inserts good enough for me to melt them into whatever i need and once ive melted them in, boy do they grip. the inserts are tough and tight in the plastic, and it's easy to use to screw in whatever you need. the example i bought a plastic shotgun stock that came in a pretty poor state, where the buttpad was supposed to screw on and there was no hole for the screw. come in these little inserts, went in nice and smooth and worked with my junk drawer mlok screws for a quick, cheap and solid fix, the few dollars i paid for these inserts actually made my shotgun stock worth it's price which is a win.

Worth the money just to have the tip for the soldering iron. Everything fits and works well with my weller soldering iron.

Very nice. Pro tip, flip upside down and press into table to get a nice surface finish.

The inserts were very easy to install, and work great. The only downside is there is no way to secure the soldering iron tool, so it would constantly slide off. A setscrew would have been a great addition to keep in place while working.

Good as a budget mixed kit, but verify the insert type before you buy, since heat set inserts for plastic, wood inserts, and rivet nuts serve very different jobs, and confirm the thread standard so the included bolts actually match. Look for brass for plastic work, and stainless or grade 8.8 steel for bolts, with clean knurling and sharp threads as quality signs, and avoid unlabeled mixes of metric and SAE. For 3D prints, size the hole to the insert minor diameter and use about 200 to 240 Celsius depending on filament, pressing straight and letting it cool before loading a screw, for wood drill the correct pilot and drive with a double nut, and for sheet metal match the grip range to thickness and practice on scrap. If you share the exact listing, I can map pilot sizes, insertion temperatures, and bolt lengths for your project. 🙂❤️

I bought these threaded inserts and they arrived quickly. I use these for my 3D prints that require a screw. The kit comes with 2 soldering tips, one for each size. Very simple to use. You just put the appropriate sized tip, heat up the soldering iron and press them into position.

This kit is a great value for the money. This uses your soldering iron to heat the inserts. I had not issues with the iron adapter as it was setup for the hacko clones. This is super easy to use

Perfect. Product is exactly as described.