Measured across the cutting edge gave 0.120 - just over 3mm. A Presto one came out right. Some cheap ones got at the Bristol exhibition the other year not only have lead shanks (perhaps not literally, but almost as soft) and varied by 5 thou between examples. You would think that by now I would have learned that cheap drills, saw blades, brazed lathe tools and the like are a waste of money....It's better to buy the good stuff in the first place. Peter Chadwick Swindon ---------- Zarlink Semiconductor Limited is a Company registered in England and Wales under number 00705031 with its registered office at Pure Offices, Kembrey Park, Swindon, Wilts SN2 8BW, England. This email is confidential and may contain information that is privileged and exempt from disclosure by law. If you have received it in error, please contact the sender immediately by return email and then delete it from your system; you should not copy it or disclose its contents to anyone. Emails are not secure and cannot be guaranteed to be error free as they can be intercepted, amended, lost or destroyed, or contain viruses. Anyone who communicates with us by email is taken to accept these risks. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.