Tom, We use a variable speed Dremel tool for trace rework and a small variable speed drill press for driiling out holes, with the particular bits called out by the process sheet . The work is only performed by trained repair/rework personnel and I can honestly say I have never seen a single problem due to this process. A good example of K.I.S.S. Regards, Steve Tucker >---------- >From: Thomas Phelps[SMTP:[log in to unmask]] >Sent: Thursday, August 07, 1997 9:11 AM >To: [log in to unmask] >Subject: [TECHNET] Etch cuts and drilling of finished raw boards > >I am in the process of evaluating equipment that could be used to meet our >current raw board >ECO needs (the cutting of surface traces and the drilling out of plated >barrells). The ECO work needs to >be done on the raw board at our facility (we only load PCBs). There does >not appear >to be an off the shelf machine that was designed specifically for these >needs. It appears as though we >would need to modify a drilling machine or modify an adhesive dispenser to >meet our needs. We are >concerned about depth control in the z direction and require vision for >"bomb sight" programming. > >Questions: > >First of all, is anyone performing this type of rework on finished raw >boards? > >If so, what methods are you using for etch cutting and the drilling of >plated barrells? > >If your process is automated, what type of equipment are you using? > >Is the equipment an off the shelf item or is it customized? > > >Any help would be greatly appreciated. > > >Tom Phelps >Teradyne >(617) 422-3031 >