To help customers optimise their cutting speeds and feed rates, and identify the best insert or tool for their requirements, Sandvik Coromant has also developed its online CoroPlus® Tool Guide.

For better sustainability, the carbide substrate of these new grades contains a high proportion of recycled carbide material, more than 50%. Making grades from recycled material saves virgin raw material, and requires less energy and fewer CO2 emissions in production.

[Thomas] only tests M5 fasteners in this video, so keep that in mind if you get ideas and go shopping for new hardware. Some of the tested inserts aren’t commonly available in smaller sizes. Self-tapping threaded inserts, for example, are available all the way down to M2, but the hex socket threaded inserts don’t seem to come any smaller than M4.

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If you want to make serious assemblies out of 3D printed parts, you’ll eventually need to deal with threading. The easiest way is to make a nut trap that you can either insert a standard nut into after printing or even during printing. However, there are limitations to this method. If you want a real threaded part you can print the thread, cut the thread with a tap or bolt, or use a threaded insert. [Stefan] ran some tests to see how each of those methods held up to real use. (YouTube, embedded below.) He used fifty test parts to generate data for comparison.

The resulting modified soldering iron is mounted via standoffs to a 3D-printed adapter with a copper foil heat shield. [concretedog] admits it’s not ideal from a heat management perspective, but it makes a fine prototype that seems to work well for light duty. The next step would be a metal version.

Grade GC4425 is shown to outperform competing inserts in a majority of steel turning applications. It features improved wear and heat resistance and toughness, which significantly expands the application range. Both it and GC4415 can be used for finishing to roughing, in applications with continuous cuts and light interruptions.

NATS picked up two industry awards last week in recognition of its work with suppliers and customers around the world.

The International Air Transport Association (IATA) will create the Sustainable Aviation Fuel (SAF) Matchmaker platform to link airlines and SAF suppliers.

[Stefan] also looked at torque resistance, and found no substantial difference between the three insert types. Indeed, none of the inserts proved to be the weak point, as the failure mode of all the torque tests was the M3 bolt itself. This didn’t hold with the bolt threaded directly into the plastic, of course; any insert is better than none for torque resistance.

Join me below as I fill in the knowledge gaps (and some literal ones too) to send you back to the lab equipped with a technique that will give you perfectly-seated inserts every time.

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Whenever one is working around a design that already exists, it pays to be flexible and adjust to the unexpected. The Dremel 220 has a holder intended to clamp a rotary tool, and the original plan was to simply design and print an adapter so a soldering iron could sit in place of the rotary tool. That plan changed upon realizing that the entire rotary tool holder disconnected from the tool’s frame with a single bolt. It made much more sense to make the soldering iron replace the rotary tool holder, instead.

Have you ever wondered whether it’s worth the time and expense to install threaded inserts into your 3D-printed projects? [Stefan] from CNC Kitchen did, and decided to answer the question once and for all, with science.

Farsound has opened its new facility in San Antonio, Texas, as part of its commitment to serving a growing customer base across the Americas.

In one case, a general engineering manufacturer subjected a 4140 pre-heat treated steel workpiece to multi-directional external roughing with the GC4425 insert. Compared with using a competitor’s ISO-insert for the same process, the customer was able to achieve a 100% productivity increase, with a reduced cycle time of 50% plus a 30% cost reduction.

GC4415 and GC4425 deliver increased toughness, heat resistance and predictable wear. They are ideal for manufacturers operating in mass and batch production set-ups machining low alloyed (P 2.1 to 2.6) and unalloyed (P 1.1 to 1.5) steels, respectively.

Today I’d like to share some tips on one of my favorite functional 3D-printing techniques: adding heat-set inserts. As someone who’s been installing them into plastic parts for years manually, I think many guides overlook some process details crucial to getting consistent results.

There are a number of other easily-available threaded inserts, including the rivnut (or rivet nut), chunky hex socket threaded inserts intended for wood and furniture, heli-coils or helical inserts (which resemble springs), self-tapping threaded inserts (also sold as thread adapters), and T-nuts or prong nuts. They all are a bit different, but he measures each one and gives a thorough rundown on how they perform, as well as offering his thoughts on what works best.

Dremel has been helping people fit square pegs into round holes for years, and [concretedog] saw that the Dremel 220 Workstation — a piece of hardware similar to a drill press — could be convinced to hold a cheap soldering iron just as easily as it holds a rotary tool. A soldering iron makes an effective thermal insert tool, and the job of heating and pressing the threaded metal rings into plastic is made much easier when it can be done similar to operating a drill press. With a few modifications and a 3D-printed adapter, the thermal insert rig was born.

Meanwhile, GC4415 is designed to complement GC4425 when enhanced performance and more heat resistance is needed. In addition, the materials’ new post-treatment is found to boost performance in intermittent cutting operations, avoiding any sudden breakages and enabling both insert grades to outperform over a broad application range.

The NPAS Annual Report 2023/24 has been published, following September 2024's National Strategic Board, capturing some of the key headlines from the previous year and details operational and financial performance data.

The usual way to put a durable threaded interface into a 3D print is to use a heat-set insert, but what about other options? [Thomas Sanladerer] evaluates a variety of different threaded inserts, none of which are actually made with 3D printing in mind but are useful nevertheless.

Part of global industrial engineering group Sandvik, Sandvik Coromant is at the forefront of manufacturing tools, machining solutions and knowledge that drive industry standards and innovations demanded by the metalworking industry now and into the next industrial era. Educational support, extensive R&D investment and strong customer partnerships ensure the development of machining technologies that change, lead and drive the future of manufacturing. Sandvik Coromant owns over 3100 patents worldwide, employs over 7,900 staff and is represented in 150 countries, including Sandvik Coromant UK, based in Halesowen in the West Midlands.

If you haven’t tried these out yet, check out [Joshua Vasquez’s] excellent guide on heat-set inserts. You’ll find this guide to the relative merits of the different types useful when ordering inserts. And if you’ve got the itch to buy a lathe now, we’ve got you covered there too.

If you’re intrigued by threaded heat-set inserts, you can learn all about how to use them from Joshua Vasquez’s guide to the handy things. And should you prefer to make your own DIY press from 3D printed parts and off-the-shelf hardware, we have that covered as well.

If this sounds familiar, it’s with good reason: we covered [Stefan]’s last stab at assessing threaded inserts back in March. Then, he was primarily interested in determining if threaded inserts are better than threads cut or printed directly into parts. The current work is concerned with the relative value of different designs of threaded inserts. He looked at three different styles of press-in inserts, ranging in price from pennies apiece to a princely 25 cents. The complexity of the outside knurling seems not to be correlated with the price; the inserts with opposed helical knurls seem like they’d be harder to manufacture than the ones with simple barbs on the outside of the barrel, but cost less. And in fact, the mid-price insert outperformed the expensive one in pull-out tests. Surprisingly, the cheapest inserts were actually far worse at pull-out resistance than printing undersized holes and threading an M3 screw directly into the plastic.

The inserts’ superior wear resistance is attributed to Sandvik Coromant’s second generation Inveio® technology, an alumina coating layer. What makes Inveio unique can be seen at a microscopic level; its surface is characterised by a uni-directional crystal orientation.

County Armagh based Thompson Aero Seating has officially launched its VantageNOVA seating solution, the latest addition to the Vantage seating family, providing an innovative premium angled seat for twin-aisle aircraft.

These threaded inserts might be just what your next project calls for, so keep them in mind. Heat-set inserts are of course still a great option, and our own Sonya Vasquez can tell you everything you need to know about installing heat-set inserts into 3D printed parts in a way that leaves them looking super professional.

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We enjoyed seeing [Stefan]’s tests, and appreciate the data that can help us be informed consumers. [John] over at Project Farm does similar head-to-head tests, like this test of different epoxy adhesives.

“GC4425 and GC4415 give prolonged tool-life in some of the most challenging cutting conditions,” added Anderstedt. “Combined with Sandvik Coromant’s close partnership and the Toolguide, our customers can achieve higher productivity, a lower cost-per-part and more profitable production.”

Like many of us, [Sean] has embraced the use of heat-set threaded inserts to beef up the mechanical connections on his 3D-printed parts. [Sean] dedicated a soldering iron to the task, equipping it with a tip especially for the job. But it was the flavor of iron proverbially known as a “fire stick” and he found that this iron was too hot for PLA prints. As the new owner of a lathe, he was able to make quick work of the job using a piece of brass rod stock. Luckily, Hakko tips just slip on the heating element, so no threading operations were needed. [Sean] made insert tips for multiple sized inserts, and the results speak for themselves.

Menzies Aviation has announced the official opening of its new cargo facility at Maputo International Airport (MPM) in Mozambique.

Each crystal is lined up towards the cutting edge, creating a strong barrier that improves crater and flank wear resistance. Heat is also lead away from the cutting zone more quickly, which keeps the cutting edge in shape for longer. The result is a harder wearing tool.

We can make our 3D-printed parts even more capable when we start mixing them with some essential “mechanical vitamins.” By combining prints with screws, nuts, fasteners, and pins, we get a rich ecosystem for mechanism-making with capabilities beyond what we could simply print alone.

Customers have been able to implement higher cutting speeds (vc) and multiplied feed rates (fn) with the new carbide inserts.

We like the threaded insert method where a brass insert is pushed into the plastic while hot. Special features in the insert cause the brass part to grab the plastic, making it difficult to pull the insert out or twist it within the hole. Another thing we liked was that the tests used holes printed in the horizontal and vertical plane. You can clearly see that the orientation does alter how the holes work and fail to work.

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There’s a trick in the world of plastic enclosures. The threaded insert is a small cylinder of metal with threads on the inside and a rough edge on the outside. To make a plastic part with a hole for securely connecting bolts that can be repeatedly screwed without destroying the plastic, you take the threaded insert and press it (usually with the help of a soldering iron to heat the insert)  into a hole that’s slightly smaller than the insert. The heat melts the plastic a little bit and allows for the insert to go inside. Then when it cools the insert is snugly inside the plastic, and you can attach circuit boards or other plastic parts using a bolt without stripping the screw or the insert. We’ve seen Hackaday’s [Joshua Vasquez] installing threaded inserts with an iron, as well as in a few other projects.

When the tool you need doesn’t exist, you have to make it yourself. Come to think of it, even if the tool exists, it’s often way more fun to make it yourself. The former situation, though, is one that [Sean Hodgins] found himself in with regard to threaded inserts. Rather than suffer from the wrong tool for the job, he machined his own custom threaded insert tool for his Hakko soldering iron.

“Generally speaking, every manufacturer wants to achieve the following goals: increased metal removal rates, more pieces per edge, reduced cycle times, minimised waste and optimised inventory use,” said Johan Anderstedt, Global Product Manager Turning at Sandvik Coromant.

“For manufacturers with a batch production set-up, this also means having the flexibility to machine multiple steel materials with the same grade. Our new GC4415 and GC4425 grades can help you achieve this — even with tough and complex ISO-P materials.” The GC4415 and GC4425 inserts show superior wear resistance over competing inserts, which contributes towards extended tool life and predictable performance with every use. This also minimizes material waste, both from the workpiece and the insert.

Make no mistake; there are a handful of insert guides already out there [1, 2]. (In fact, I encourage you to look there first for a good jump-start.) Over the years though, I’ve added my own finishing move (nothing exotic or difficult) which I call the Plate-Press Technique that gives me a major boost in consistency.