QSJ 130Pcs Threaded Inserts Heat Set Inserts Kit M3x4x5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials

These are my first heat inserts, bought them bc i was tired of hot gluing 3d printed parts together. Picked these bc it looked like good value for money (it totally is). The included tips fit the inserts and my soldering iron perfectly. The case was kinda jam packed so i 3d printed a holder for the soldering iron tips which freed up a lot of space. Btw if you dont have one already get a 3d printer along with these. I dont think they would work with anything else. For me, the M3 size fits in a hole with a 4.5mm diameter and the M2.5 size fits in a 3.4mm hole. This may vary depending on your printer so i recommend making a test with several different sized holes to see what fits best.

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.

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.

Fit as expected in my soldering iron. Used to get threaded holes on thick acrylic sheet.

I used these for a 3D project I've been working on, and they worked well. I really appreciated that the package included tips for the soldering iron. It was easy to use and produced a good finished product. The only thing I wish was simpler was keeping the nut straight—some of them ended up slightly crooked.

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

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.

The inserts themselves are of solid quality, and I have not had any rip out to date. The included solder iron tip fits my dearest Hakko 936 iron perfectly. I've messed around with hole size for these, and with how well heat transfers through the iron tip into the brass material, I have found that I can keep a much tighter fit for ideal engagement of the insert serrations. I'm not sure how I ever lived with leaving pockets for nuts all this time when these not only work better but look awesome at the same time. A smaller hole radius means extra material will squish out the front, but the slag is simple to cut off warm with no damage to the surface. I'll probably order another few sets just to have extra tips around for my other iron and to top off the dedicated "Brass Threaded Insert" drawer.

Lo único que me llegó fue la bolsa vacía, uno solo de los insertos y la herramienta para colocarlos.