Stronger 3D Prints — Glue or Carbon Fiber?

[CNCKitchen], like many others, is looking to make strong 3D prints. Using a high tech PLA bio copolyester compound, he printed a bunch of hooks in two different orientations. He used several different types of glue including epoxy and superglue. You can see the video of his results, below.

In addition to the glue, he used epoxy and bulk carbon fiber, again, in two different orientations. After several days of curing, he was ready to test.

Untreated parts managed about 53 kg or not quite 25 kg, depending on their orientation. The thin superglue part got up to 58 kg. VIscious superglue didn’t do much better than the thin glue. Since the epoxy cracked before the plastic, there wasn’t much difference and in one orientation it was even weaker than the reference part.

You can get carbon fiber enhanced PLA, but you get short fibers. [Stefan] glued long pieces of carbon fiber exactly where he wanted them using epoxy. This method did provide some benefits.

Unfortunately, at least with the plastic used, none of the results were amazing. The carbon fiber technique bears more investigation, but even so, the results were — so far — not astonishing. However, this is a great application of the scientific method. Intuitively, adding some glue ought to make parts better, right? Testing like this shows that it doesn’t in this particular circumstance.

By the same token, you’d think getting superglue in your eyes would be a life-changing event. Apparently, not so much, although we still don’t recommend it. If you want to know more about glue — maybe more than you want to know — we deconstructed glue awhile ago.

from Hackaday https://ift.tt/2Qvmrxv

Comments

Crypto exchange Binance prepares to add margin trading ‘soon’

Binance, the world’s most prominent crypto exchange, says it is close to adding a much-anticipated margin trading feature to its service following weeks of speculation. The company tweeted confirmation of the upcoming feature in a screenshot which subtly teases the imminent arrival of margin trading options. Binance CEO Changpeng Zhao (pictured above) first revealed that the feature was headed to Binance during a live stream following a hack earlier this month that saw Binance lose around $40 million in Bitcoin . TechCrunch understands that margin trading has been beta tested among selected users. A Binance representative declined to comment on the specifics, but did confirm that margin trading will be available on Binance.com “soon.” Dark mode or Light mode ? #Binance pic.twitter.com/pGSb1np4yp — Binance (@binance) May 24, 2019 Margin trading, which lets traders use their balance as collateral to super-size their buying power, is seen by many as an important growth vec

World Economic Forum launches Global AI Council to address governance gaps

The World Economic Forum is creating a series of councils that create policy recommendations for use of things like AI, blockchain, and precision medicine. Read More from VentureBeat http://bit.ly/2EKBjD4

The hidden cost of food delivery

Noah Lichtenstein Contributor Share on Twitter Noah Lichtenstein is the founder and managing partner of Crossover , a diversified private technology fund backed by institutional investors, technology execs and professional athletes and entertainers. More posts by this contributor What Studying Students Teaches Us About Great Apps I’ll admit it: When it comes to food, I’m lazy. There are dozens of great dining options within a few blocks of my home, yet I still end up ordering food through delivery apps four or five times per week. With the growing coronavirus pandemic closing restaurants and consumers self-isolating, it is likely we will see a spike in food delivery much like the 20% jump China reported during the peak of its crisis. With the food delivery sector rocketing toward a projected $365 billion by the end of the decade, I’m clearly not the only one turning to delivery apps even before the pandemic hit. Thanks to technology (and VC funding) we can get a ri

All Things Tech

Search This Blog