I have got outside threading tool + insert from RDG, not happy with insert. I have some better external/internal threading tools, but I don't know which inserts to buy.
I would like to stick 16ER and 16NR inserts, because there is pretty good selection for different thread profiles. But which brand and where? Big tamale would be selection of full profile metric threading inserts.
Annother thing is groovin inserts, specially internal grooving. This far I have used very happily Mesa tools stuff, but when I need precise width I need to grind the insert.
I have been considering MGMN inserts and bars for them, but three internal/external tool + inserts will add up in price and still I would be grinding the inserts.
I have three or four nearly unused SECO:n internal grooving bars, but only one isert for each. Can't find tha inserts for them. 16 mm internal groving bar has a ID of SNP0016M9 and the bit looks much like a CCMT09 insert, but it is more square and has a projection sticking out of it. The insert is nice to sharpen and modify. Just can't find them.
Very temped to go back to HSS, but they don't hold as well as inserts.