Hi Technet, We have order from our customer PWB with high tolerance: 1.00 +/-0.03 mm. Our standard for 1.00 router bit tolerance is +0.0/-0.03 and actual diameter from 0.97~0.98. With this router bit diameter we applied compensation by adjust offset value but result was not stable. Then I am looking for other Router bit supplier, which has spec as follow: 1. Diameter: 1.0mm 2. Tolerance +0.02/ +0.01 or +0.01/ +0 3. Flute length 6.5mm (if possible) 4. Total length: 38.1mm 5. Shank diameter: 3.175 mm 6. Point angle: 135 degree 7. Cutting tooth helix angle 25 degree 8. Chip breaker helix angle 20 degree Items 1, 2, 3 were important for us. The other we will confirm by testing. Please contact to me by email (or by Technet). Any input would be greatly appreciated. TIA, Tri'. Fujitsu Vietnam [log in to unmask] --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------