HOLMOL 360PCS Threaded Inserts for Plastic

Needed these to be able to atta h moving parts on a 3d printed project and they were perfect. Fitted well and performed the function needed

My dear, if you're anything like me and enjoy a spot of artisanal fabrication – perhaps a custom 3D printed enclosure for a clever bit of tech, or a beautifully crafted prototype for a new design – then these HOLMOL Threaded Inserts are an absolute revelation. Honestly, I don't know how I managed without them. This 360-piece assortment is just terribly comprehensive, covering all the essential sizes for creating robust, professional-grade threaded connections in plastic. The quality is truly exceptional; they press in beautifully with a bit of heat – I use my trusty soldering iron, you know – creating a wonderfully strong, clean thread that holds up splendidly. No more stripping flimsy plastic, thank heavens! They've utterly transformed the integrity and finish of my various projects. It elevates one's work from "a bit of a hack" to something genuinely refined and durable. A really clever bit of kit, and frankly, a superb investment for anyone serious about their making. Highly, highly recommended, darling!

The product works as expected on the whole. However contrary to most advice, a special tool is needed to insert these correctly. An ordinary soldering iron tip that does not go all the way through the insert will push the insert into the plastic. However it will fill the insert with the melted debris making it difficult to screw a bolt into the insert without first clearing the blocked thread.

I purchased these as after i got 100 m3 ones i have made a few 3d prints that seem to use the 2mm and 2.5mm just my luck.Anyway this is a great kit with various sizes all up to m6 and 1/4" being the biggest.

Great variety of products however could do with less of the small size and more large size but overall great quality

Does as expected. The double helical fins ensure a secure insert that feels as tough as the plastic. Assembly is clean, no more worn-out plastic screw-holes and ensures repeatable use where disassembly multiple times is expected. Lots of sizes to ensure finding the right one for a job. I printed a test plate with several sized holes to ensure that my CAD and printer made the precisely correct fit. After that very plain sailing. Good value,

Inserts look fine but havent tested extensivley, however the case they come in doesent keep them seperated well so they were all mixed up when they arrived.

Good sizes but a little supply heavy in smaller sizes could do with more 4 & 5mm inserts