On a previous episode, we tested using plastic thread forming screws as fasteners for 3D printed parts. While they work great for some applications, they can only be removed and inserted a limited number of times before they destroy the hole and they are somewhat limited in their holding strength.
We have been hard at work the last few weeks developing some new products, and found this an interesting solution to the problem.
Since you also have to buy machine screws, they are a little expensive at $0.15 each, in quantities of 100. These brass inserts perform better than expected. The soldering iron tip makes them incredibly easy to install and the holding strength is more than sufficient for anything you would be 3D printing in plastic.
In a properly sized hole with a slight chamfer we were unable to pull out the inserts with our planned test methodology, and the tests were deemed successful.
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