With a reasonably competent operator and well-maintained spindles, you should able to +/-.005 easily. We do all the time, actually, it's our default when no tolerance is supplied. -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of John Parsons Sent: Wednesday, February 21, 2001 11:16 To: [log in to unmask] Subject: Re: [TN] FAB - Reality Check, Tooling Holes and Profiling Steve, And with pinless routs you are having no problems maintaining the +/- 0.005" tolerances seen on many of todays fab drawings? Or do you not see tolerances spec'd this tight? Regards John Parsons > John, we use pinless routing with '80s vintage Excellon Mark IV's. A lot of > today's designs don't leave a lot of room for additional tooling, and > pinless saves on set-ups. ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------