From mtang at snf.stanford.edu Thu Feb 1 10:42:52 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Thu, 1 Feb 2007 10:42:52 -0800 Subject: Problem wafersaw SNF 2007-02-01 10:42:52: Debris? Message-ID: Two users report unusual amounts of debris remaining after sawing. This has affected the surface quality of their structures, even when protected by resist. Please let us know of your observations. From mtang at snf.stanford.edu Thu Feb 1 12:08:00 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Thu, 1 Feb 2007 12:08:00 -0800 Subject: Shutdown wafersaw SNF 2007-02-01 12:08:00: Water jet alignment Message-ID: The cooling water jets are not aligned with the blade. Suspicion is that this had something to do with the spindle rebuild/replacement. This could very well cause the debris observed. Maintenance is investigating. From eenriquez at snf.stanford.edu Thu Feb 1 14:43:30 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Thu, 1 Feb 2007 14:43:30 -0800 Subject: Shutdown wafersaw SNF 2007-02-01 12:08:00: Water jet alignment Message-ID: Adjusted spindle position. Now water is sprayed on both sides of the blade. From eenriquez at snf.stanford.edu Thu Feb 1 14:43:50 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Thu, 1 Feb 2007 14:43:50 -0800 Subject: Problem wafersaw SNF 2007-02-01 10:42:52: Debris? Message-ID: Adjusted spindle position. Now water is sprayed on both sides of the blade. From eenriquez at snf.stanford.edu Thu Feb 1 14:49:30 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Thu, 1 Feb 2007 14:49:30 -0800 Subject: Problem wafersaw SNF 2007-02-01 14:49:29: Adjusted spindle position Message-ID: Water is now sprayed on both sides of the blade. Need a user to cut a wafer to test. From mtang at snf.stanford.edu Mon Feb 5 09:56:39 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Mon, 5 Feb 2007 09:56:39 -0800 Subject: Problem wafersaw SNF 2007-02-01 14:49:29: Adjusted spindle position Message-ID: Jim Kruger confirms on his samples that the spindle adjustment fixed the problem. Hooray! Thanks, Elmer! From crichter at snf.stanford.edu Wed Feb 7 16:59:16 2007 From: crichter at snf.stanford.edu (crichter at snf.stanford.edu) Date: Wed, 7 Feb 2007 16:59:16 -0800 Subject: Problem wafersaw SNF 2007-02-07 16:59:16: Chuck pin pops off after unload Message-ID: Also, the bulb for the FAST button burned off and needs replacement bulb. From jimkruger at snf.stanford.edu Wed Feb 7 17:34:39 2007 From: jimkruger at snf.stanford.edu (jimkruger at snf.stanford.edu) Date: Wed, 7 Feb 2007 17:34:39 -0800 Subject: Shutdown wafersaw SNF 2007-02-07 17:34:38: erratic behavior Message-ID: would not sin gle cut on II, saw moves before cutting. Tried cold re-start, still erratic behavior of saw when trying to calibrate height. may need hard reset From jimkruger at snf.stanford.edu Wed Feb 7 17:37:32 2007 From: jimkruger at snf.stanford.edu (jimkruger at snf.stanford.edu) Date: Wed, 7 Feb 2007 17:37:32 -0800 Subject: Comment wafersaw SNF 2007-02-07 17:37:32: saw spindle shifter away from the water again Message-ID: The whole spindle was found shifted away from the water jets as just as after the holidays. Results in very dirty cuts. Elmer re-positioned it, cuts look clean. But how could this have happened? From eenriquez at snf.stanford.edu Thu Feb 8 08:41:57 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Thu, 8 Feb 2007 08:41:57 -0800 Subject: Comment wafersaw SNF 2007-02-08 08:41:55: Cycled the power; needs to be tested Message-ID: From rissman at snf.stanford.edu Thu Feb 8 09:07:09 2007 From: rissman at snf.stanford.edu (rissman at snf.stanford.edu) Date: Thu, 8 Feb 2007 09:07:09 -0800 Subject: Shutdown wafersaw SNF 2007-02-07 17:34:38: erratic behavior Message-ID: Elmer has repaired system, needs test. From rissman at snf.stanford.edu Thu Feb 8 09:07:55 2007 From: rissman at snf.stanford.edu (rissman at snf.stanford.edu) Date: Thu, 8 Feb 2007 09:07:55 -0800 Subject: Problem wafersaw SNF 2007-02-08 09:07:54: system repaired, needs test Message-ID: From chen0622 at snf.stanford.edu Thu Feb 8 17:42:06 2007 From: chen0622 at snf.stanford.edu (chen0622 at snf.stanford.edu) Date: Thu, 8 Feb 2007 17:42:06 -0800 Subject: Problem wafersaw SNF 2007-02-08 17:42:06: the "stop" light could not be on even it has been pressed. Message-ID: From eenriquez at snf.stanford.edu Fri Feb 9 08:39:02 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Fri, 9 Feb 2007 08:39:02 -0800 Subject: Shutdown wafersaw SNF 2007-02-09 08:39:02: Spindle position needs to be adjusted. Message-ID: From eenriquez at snf.stanford.edu Fri Feb 9 10:03:41 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Fri, 9 Feb 2007 10:03:41 -0800 Subject: Shutdown wafersaw SNF 2007-02-09 08:39:02: Spindle position needs to be adjusted. Message-ID: Re-adjusted spindle position. Modified clamp shim to increase clamping force. From eenriquez at snf.stanford.edu Fri Feb 9 10:05:05 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Fri, 9 Feb 2007 10:05:05 -0800 Subject: Comment wafersaw SNF 2007-02-08 08:41:55: Cycled the power; needs to be tested Message-ID: From eenriquez at snf.stanford.edu Fri Feb 9 10:07:23 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Fri, 9 Feb 2007 10:07:23 -0800 Subject: Comment wafersaw SNF 2007-02-09 10:07:22: Needs to be tested Message-ID: From eenriquez at snf.stanford.edu Mon Feb 12 07:28:11 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Mon, 12 Feb 2007 07:28:11 -0800 Subject: Problem wafersaw SNF 2007-02-08 17:42:06: the "stop" light could not be on even it has been pressed. Message-ID: Replaced burnt out light bulb. From eenriquez at snf.stanford.edu Mon Feb 12 07:29:04 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Mon, 12 Feb 2007 07:29:04 -0800 Subject: Comment wafersaw SNF 2007-01-18 11:00:20: Lamps out Message-ID: Replaced burnt out light bulbs. From eenriquez at snf.stanford.edu Mon Feb 12 07:36:37 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Mon, 12 Feb 2007 07:36:37 -0800 Subject: Comment wafersaw SNF 2007-02-07 17:37:32: saw spindle shifter away from the water again Message-ID: Re-positioned the spindle. Removed the clamping force limiter shim and tightened the spindle clamp. Three users have already used the saw without any problems. From eenriquez at snf.stanford.edu Mon Feb 12 07:36:58 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Mon, 12 Feb 2007 07:36:58 -0800 Subject: Problem wafersaw SNF 2007-02-08 09:07:54: system repaired, needs test Message-ID: Re-positioned the spindle. Removed the clamping force limiter shim and tightened the spindle clamp. Three users have already used the saw without any problems. From eenriquez at snf.stanford.edu Mon Feb 12 07:38:39 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Mon, 12 Feb 2007 07:38:39 -0800 Subject: Comment wafersaw SNF 2007-02-09 10:07:22: Needs to be tested Message-ID: Three users have already used the saw without any problems. From barlian at snf.stanford.edu Tue Feb 20 19:36:00 2007 From: barlian at snf.stanford.edu (barlian at snf.stanford.edu) Date: Tue, 20 Feb 2007 19:36:00 -0800 Subject: Comment wafersaw SNF 2007-02-20 19:36:00: the blade is broken Message-ID: i couldn't use the machine From eenriquez at snf.stanford.edu Wed Feb 21 08:32:37 2007 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Wed, 21 Feb 2007 08:32:37 -0800 Subject: Comment wafersaw SNF 2007-02-20 19:36:00: the blade is broken Message-ID: The blade was installed incorrectly. The blade should be installed on the spindle in the following order: Blade first, then thecollar and then the nut. Installed a new blade. From mtang at snf.stanford.edu Fri Feb 23 09:10:23 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Fri, 23 Feb 2007 09:10:23 -0800 Subject: Problem wafersaw SNF 2007-02-07 16:59:16: Chuck pin pops off after unload Message-ID: Sorry, it happens sometimes. It's hard to balance the vacuum and purge pressures. Just pop the pin back in, please. From mtang at snf.stanford.edu Mon Feb 26 17:30:14 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Mon, 26 Feb 2007 17:30:14 -0800 Subject: Problem wafersaw SNF 2007-02-26 17:30:13: Vacuum? Message-ID: A user just reported that on two occasions this past week, vacuum was lost or very weak on the chuck. We will check it out tomorrow. Please report any problems (and observations!) you may have on Coral. From mtang at snf.stanford.edu Tue Feb 27 09:48:43 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Tue, 27 Feb 2007 09:48:43 -0800 Subject: Problem wafersaw SNF 2007-02-26 17:30:13: Vacuum? Message-ID: Hmm.... Vacuum checks out fine. Tried different wafers with and without tape. Let us know if you have a problem...