When the bit gets dull it will leave some frayed edges, witch can be stoned away. I run it at 21K rpm and 550 mm/min. 3 passes with 0.17 mm stepover.
Hopefully the finnish comes across. most of the traces are 0.4mm. also there are VIA's mounted in the picture. https://photos.app.goo.gl/RUnnMHVvuJaenvhs2 I havent used a reflow oven, but it's no problem just soldering the SMT with a soldering iron.Altough solderbridges can be a problem sometimes. If you want to get fancy you can use "liquid tin plating <https://www.ebay.com/itm/SENO-TIN-PCB-Tin-Plating-powder-for-500ml-solution-Immersion-tin-plating/112475543269?hash=item1a301096e5:g:BFEAAOSwjVVVhVQG>". Leaves a good result, but as there are alot of copper left on the board, one of thoes bags dosent last long. I have also fooled around with UV cureable soldermask. But the smell and extra steps to get a finnished boards sets off. 2018-04-08 10:55 GMT+02:00 Chris Albertson <albertson.ch...@gmail.com>: > Peter, > > I looked it those engraver bits. Microscopic. What speed to you turn > them at? 100K RPM? > > Also I looked at the autoleveller. Seem like a good idea. I'm working on > adding automatic level to my 3D printer. But I hope my mill does not have > a 0.1mm tilt. > > Are you able to solder SMDs with out first tinning or solder past. The > milled boards are just plan copper. Do they reflow? I figured I'd use > this technique for 0.1 inch lead parts > > > > On Sun, Apr 8, 2018 at 1:21 AM, Peter Rosenblom <pomme...@gmail.com> > wrote: > > > I use KiCAD for schematic and layout. A typical trace would be 0.4mm. The > > smallest tracers I go is 0.3mm. Anything thinner i the results vary alot. > > As for SMD's SOT23-6 and SOIC is a comfortable packages to work with. > > For CAM I use flatcam <http://flatcam.org/>, with is quite messy at > first, > > but has alot of opportunities to tweak settings. It also has a very good > > tool for making aliment holes when doing sided boards. It can also > > "mill-drill" with is convenient. > > > > I use Autoleveller <http://www.autoleveller.co.uk/> after the gcode has > > been generated by flatcam. Even though i use generous amounts of double > > sided tape as work holding , and leveled spoilplate I still get > noticeable > > better results when I level the board first. > > > > For engraving bits i really like theese : > > https://www.ebay.com/itm/5-HM-Engraver-3-175-40-CNC- > > Engraving-Bits-PCBs-PCB-Endmill-VHM/112827385707?hash= > > item1a4509476b:g:m0IAAOSwa~BYXBl2 > > > > They give good results for tents to stay sharp for many more boards than > > the really cheap chineese ones. Although I have had some good success > with > > thoes cheap ones aswell, just not as frequent =). > > > > /Peter > > > > 2018-04-08 8:20 GMT+02:00 Marcus Bowman <Marcus.Bowman@visible. > > eclipse.co.uk > > >: > > > > > > > > On 8 Apr 2018, at 06:05, Chris Albertson wrote: > > > > > > > > Is there a Linux based tool chain? The part I don't see is how to > > > convert > > > > Gerber files to g-code files. > > > > > > The video mentions CopperCAM, but the CopperCAM site says it takes in > > some > > > Gerber files, but doesn't give enough details of the "output files". > > > > > > > > > > > Then what tools work best? I think three are needed tiny end mill to > > > route > > > > copper, > > > > > > Engraving tools are cheap and work quite well on pcb material. > > > > > > And dust extraction is a must. The guy in the video really needs to > think > > > about abrasive particles entering his airways. > > > > > > > > > > Tiny spiral mill for cutting the PCB all the way through and a few > > > > micro side drill bits for the through holes. > > > > > > > > BTW it seems like the guy in the video could have saved a lot of time > > by > > > > using a (fake) ground plane that flooded all the empty space. No > need > > to > > > > mill all that copper away. > > > > > > +1 to that, unless the circuit demands low inter-layer capacitance. > > > > > > Marcus > > > > > > > > > ------------------------------------------------------------ > > > ------------------ > > > Check out the vibrant tech community on one of the world's most > > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > ------------------------------------------------------------ > > ------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > -- > > Chris Albertson > Redondo Beach, California > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
