Looking at the one on the far right I am thinking it may not be a threading tool after all as it seems to be closer to 90 degrees rather than 60 (or 55 for Whit threadforms).
Not bad those Chinese tools, the tips are made from something akin to mozzarella though so for anything other than brass or ally you're best buying some decent ones for harder stuffI took the plunge and bought a 16mm shank indexable threading tool with ten replaceable tips, each with three corners, via Wish.com.
Ordered Tuesday night, email by Weds night to say it had been despatched somewhere in China. Email Friday to sat it was on a plkane to Heathrow, postie left a card the following Weds to say a package wouldn't fit through the letterbox. So I collected it from the sorting office, it had been sent Royal Mail Special Delivery Guaranteed, had a customs declaration of $5 (probably a true reflection of what it cost) and it cost me £12 all the way from the factory.
I had a play with it on Thurday night and straight off it produced probably the nicest threads I've ever cut.
Twelve quid for god's sake. No wonder Britain can't compete.
Not bad those Chinese tools, the tips are made from something akin to mozzarella though so for anything other than brass or ally you're best buying some decent ones for harder stuff
Having bought plenty because I'm a cheap get, I can categorically state that they don't like chewing harder stuffDon't know bout that, a lot of people seem to be saying they are great even on steel.
i have to agree with Screwdriver the brazed tipped carbide tools are rubbish on mini lathes.
The normal stone for grinding carbide is silicon carbide, the green wheels.Its more that the grind on the brazed tips are rubbish, and not many people have/want to use a cheap diamond wheel to sharpen them.
i thought to use carbide effectively its got to be run at much higher speeds and go quite heavy on them? which is why they deal with heat so well.I've never understood why people say this. A cutting tip is exactly that. Everything is usable on any lathe. It's more technique than anything. You cannot realistically have two identical profiles on different tip materials, (unless one material just isn't upto scratch), giving wildly different results.
I've never understood why people say this. A cutting tip is exactly that. Everything is usable on any lathe. It's more technique than anything. You cannot realistically have two identical profiles on different tip materials, (unless one material just isn't upto scratch), giving wildly different results.
Its more that the grind on the brazed tips are rubbish, and not many people have/want to use a cheap diamond wheel to sharpen them.