Brass Heat-Set Threaded Inserts are the gold standard for assembling and securing plastic parts together. When installed, the serrated outer edges grab the plastic locally melted around them, creating a reliable, repeatable threaded joint to screw into again and again. Available in a variety of the most common sizes for 3D-printed blast
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Great inserts. I used them for an OFD Quik blaster and they are holding up to heavy use with no loosening or dislodging.