On Thu, May 20, 2010 at 9:24 AM, funlw65 <[email protected]> wrote: > Hi Vasile, > > I'm able to get down to 2 number of drills. As example, for Olimex > (production files available for all guys from Europe) I prepared 4 > drills: 0.9, 1.1, 2.1 and 3.3mm
This is OK, but not 1.0 and 1,016 or 0.80 and 0.81, etc > counting that it is about plated holes > and the diameter of drills are the ones from the default equipment of > Olimex and they don't charge you extra.. > > For CNC Router can be smaller bits (0.7 for almost all components and > 0.9mm for connectors and regulator - for USB connector and DC I can > enlarge them myself). What diameters you recommend? > any from 0.6mm to as large you need, there is no restriction since is using one drill in one tool and less than 10 different tools > How thin can be the traces in mil? > 10 mil (0.254mm) and 5mil (0.10mm) for high density > > The Gerber-274x file for bottom copper must be mirrored, or left as it > is seen from component view? > > Which romanian PCB house? > CEE Timisoara [email protected] > > Vasi(funlw65) > > On May 20, 7:40 am, vasile surducan <[email protected]> wrote: > > On Wed, May 19, 2010 at 12:02 PM, Florin Tanasa <[email protected] > >wrote: > > > > > > > > > Hi all, > > > I made some changes to the shield and with great difficulty I made the > PCB > > > design. Tracks have 0,25 mm thick. > > > Attach some pictures of kicad. > > > In the image snapshot8 because I do not have header with long pin I was > > > thinking to put strip pin on the copper side. > > > > Hi Florin, > > I'm glad to see you have understood some of my points and even applied > them. > > I can only guess your design is one layer, maybe I'm wrong. Use the > largest > > pad diameters, maybe oblong in all places where is possible. Please try > to > > analyze the ground plane separation or ground planes islands connections > in > > terms of ground impedance. > > If a route between two ground islands is very thin, you should use either > > the second ground plane layer or additional straps on component side. Use > a > > generous number of straps for such operation if necessary, will save you > > from big problems. > > If ground planes could be OK, power supply route thickness could be to > small > > (it is denitely too small for the power section of your design). Power > > supply and ground routes must be treated as analog paths even for digital > > designs. > > > > However, living in the village (and design for hobby) you should be proud > > about this design, I've seen many other pour designs made by people with > > full access to the highest technology. > > > > Free offer for you for manufacturing one PCB in CNC technology if you'll > be > > able to create the correct gerber and excellon files, meaning the minimum > > number of drills (accepted less than 10) and 10 mil isolation between > > copper and routes. The same offer still available for Vasi. > > > > Instead of Olimex use romanian PCB houses, the price is almost identical, > > the quality is better (and this is a fact not a story). > > > > Vasile > > > > -- > > You received this message because you are subscribed to the Google Groups > "jallib" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > [email protected]<jallib%[email protected]> > . > > For more options, visit this group athttp:// > groups.google.com/group/jallib?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "jallib" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<jallib%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/jallib?hl=en. > > -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
