ruthex Threaded Insert M3/M4/M5 Bundle (200 Pieces) - Brass Threaded sockets - Press-fit nut for Plastic Parts - by Heat or Ultrasound in 3D Printer Parts

I use these for inserting into 3d printed parts.While more expensive than the innumerable Chinese similar products on Amazon, the quality is obvious.They feature a tapered 'start' which makes them much more accurate and easy to insert than the flat Chinese inserts.Unlike Chinese inserts they have 45 degree knurling in both directions, which makes them resist both twisting and pulling forces when in use. The Chinese ones have knurling running only parallel to the length of the insert meaning they have weak pull force resistance.Smaller radius than Chinese parts, this means I can fit the inserts into tighter and smaller designs, and I don't need to make my insert holes as big.All the same size! While a Chinese assortment pack is good to start out, I found I was soon left with a lot of unused inserts I have no use for, and run out of the useful 3mm size. Now I know what works well for 3d prints I can get just what I need.

Utilisé dans une pièce imprimé en 3D. J’ai utilisé un fer à souder pour placer l’insert, et tout fonctionne super bien, il est vraiment solide, la taille me convient parfaitement

You will also appreciate having a set of soldering tips for installing these. I used https://www.amazon.com/dp/B08B17VQLD. The combination is a game-changer for creating screwed-together multi-piece 3D assemblies. For PET-G, and probably for other plastics, design the part with holes about 1.5mm larger than the desired screw. Put one of these on the appropriate soldering tip, wait a few seconds, then ease them into the hole, flush with the surface. Voila! Strong and secure threaded holes that can be easily assembled/disassembled repeatedly.

Excelente calidad

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