🔩 Hilitchi 250-Pcs Brass Knurled Threaded Insert Embedment Nuts Assortment Kit - M2/M3/M4 Female Thread Review

For those of you looking to improve your 3D printing skills, this is where you can start. Easy to install with a soldering iron and ideal for your printed parts.

I bought these with the specific intention of assembling 3D printed parts and they work great. When modeling, just make the hole you put the insert in 1-2mm smaller than the insert itself and they will go right in when you run a hot soldering iron through them.

A very useful sample set of threaded inserts in different sizes. They use small ribs on the outside - they seem to work better than the knurled ribs I've used before. There's a good range of sizes (both diameter and depth) and a decent amount of each size - enough for prototype testing. The insert size is accurate - the countersunk hole size matches the specified insert dimensions and they fit snugly and accurately with a soldering iron. I've used them in PLA and PETG with no problems - very…

insert. I've found that with PLA and a hot soldering iron with these combs, all you need is to melt the surrounding plastic and bury the combs. Another reviewer suggests the hole is 1mm smaller, but for me this resulted in too much of an offset, which pushed it back down to the bottom of the insert and deformed the surrounding area very little. Just be prepared to do some trial and error until you find the optimal hole size for your plastic type and insertion technique.