Posted by Nick_G on 24/09/2017 14:08:18:
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The ones I have purchased from Eccentric engineering are of excellent quality but have a flat top to them without the groove Graham is requesting.
"T" Type Parting Off Blades
The premium quality blades we stock are sourced from the largest manufacturer of repetition lathe tooling in the USA.
The blades have a slight hollow grind along the top (bottom) cutting edge which assists in curling the chip for easier ejection from the cut.
The industry standard height for 1/2" "T" type parting blades is actually close to 12mm.
Please be aware that some of the cheaper "T" type blades from China and India are 12.7mm (1/2"
high and will not fit the FoR inverted parting tool holder.
This is what EE's advert says
Cheers Michael.