I need some basic information or push to the right direction.
I got some 2 mm pitch ER16 trapetzoidal thread form inserts and SER/SIR tool holders for them.
Now. Before I chuck a piece of steel, rush to the job and bollock it all up, I would like to know few things.
A) I got 16ER/NR in one box. How do I tell these apart?
I got these:
1) 16ER 2.0 TR T300 External Threading Insert General Use
2) 16NR 2.0 TR T300 Internal Threading Insert General Use
3) 16ER 3.0 TR T300 External Threading Insert General Use
B) How to set SER1616H16
http://www.shop-apt.co.uk/ser-external-threading-tools-apt/ser-1616-h16-external-threading-tool.htmlThis has a spacer(?) under insert (probably for helix angle) and a mysterious screw. What is the purpose of this screw and how to set it?
What is the correct name for this "spacer" under the threading inserts, might be easier to find if I ever need some different ones.
C) Are clearances on these ones such that I can thread LH/RH threads without any spacers/adjustment?
These inserts are not exactly as cheap as soap, I'd like to know a little before I rush.
Pekka