Heat-Set Threaded Inserts, M4 Heat Set Insert for 3D Printing Components and Plastic Parts - Brass Metric Knurled Nuts (100 Pieces)

These inserts do exactly what I wanted them to do. Easy to use (with a good insert tool). Good quality.

Threads are smooth and work well with my 2.5 screws.Something to keep in mind though: if you plan on using these, or any inserts, on resin 3D prints, you can't just use heat to shove them in like you would FDM prints. The resin will crack and crumble and you'll feel bad. You'll need to glue/epoxy/etc them in, so plan your holes accordingly. Not that I made this mistake or anything...

There are multiple options to choose from for heat inserts, which are indispensable for anyone who's serious about 3D printing. The quality varies tremendously, so does the price. However, this set checks all the boxes.I waited a bit with the review to test more than 1-2 of them and wow... these are definitely landing on my favorite list! After using over a dozen of them I can confidently say these are great. The thread quality is very good, the dimensional accuracy on the outside is within 0.05mm tolerance, and the brass has no sharp edges on it. They may not be the cheapest set, but the QUALITY is DEFINITELY worth the premium.In addition to being good quality, the ostensibly small touch of including the dimensions and a BIG picture on the packaging makes it extremely easy to identify them in a shop. I no longer need to make a custom label.... these are small things that make using the product way easier. This is my first set of the heat-set inserts from Hanglife, but for sure not the last one!

Absolutely love these things!!! what a game changer, especially if you 3D print things that need to be held together with screws. doesnt mess up your soldering iron and works like a charm! A+++

Excellent heat set inserts. Great quality and consistent. Reached out to supplier and response was quick and helpful. Highly recommend these inserts.

These heat inserts seem to be quite strong once melted into the plastic, but I found that the design makes them difficult to line up. Heat inserts should have tapered bottoms so they can sit in the hole that you melt them into, but these have a hard lip that doesn't fit in smaller holes. Despite this, you can use them by lifting them up with the soldering iron and lining it up that way, but be careful to line it up properly first, as these transfer heat quite well and will begin melting into the plastic very quickly.

Works awesome for assembling 3d printed parts

When my son ordered the 5M inserts, someone at Amazon put the 2.5M bag in the envelope. The good people at Hanglife took care of everything, even though they weren't the ones packing and shipping.Good customer service may start when you buy, but good customer service is when something's not right and is taken care of properly with minimal fuss.Thanks!

I had bought these as I was frustrated with an earlier purchase, of a different brand. I learned that my mistake was on the earlier purchase that those were for injection molding, not FDM printing.These are so easy to use, I used a 1/64 drill to bore the hole to size which is about 4.31mm as recommended, and used a heat-set insert attachment with my soldering iron at 250 degrees and after 15 seconds gentle push, and then flip over quickly on my vise flat to press and cool. It's pretty much perfect. There was no oozing into the hole of the PLA. The screw went in easily with no issues. The holding torque with the opposite rib direction is quite strong and the screw doesn't strip it even with force. I am very happy, and will rebuy this brand. I like that you can just buy 1 size that you need and the price is great and same day delivery for me at least.

Très pratique pour pièces en impression 3D.

Ottimo prodotto. Inserti precisi e resistenti

Used these in UPVC window frames to secure window screens - I've used heat-set inserts before and these are just as good as the ones I've used previously. Good kit with a decent assortment. The ones I haven't used will be good for stock.

Sehr gute Qualität.Es hat alles einwandfrei geklappt und funktioniert, gerne wieder.