Те хората и на линукс гледаха по подобен начин до неотдавна, ама той взе че се поразви и сега се ползва от доста народ.

И последно - като задавате диаметър на отвор: да чечем, един пин е 0.8 mm - отвора колко трябва да е? Безпокои ме въпроса за метализацията и евентуално малка хлабина, та да влезе пина. Има ли някакво изискване за стандартни бургии от платкаджийниците?

The (pad/via - drill hole) clearence must be minimum 0.4 mm (16 mils) i.e. the resulting annual copper ring around the drilled hole to be 0.2 mm (8 mils), example: if 0.9 mm drill hole size is used it MUST have pad/via diameter = min. 1.3 mm
Our minimum drill size is 0.6 mm (24 mils). we can't manufacture boards with smaller drill hole size.
Our maximum drill size is 5.0 mm (197 mils) we can't drill large than 5.0 mm drill hole on your board, if your board have > 5.0 mm drill it will be replaced with 5.0 mm drill
Our standard drill tool rack is: 0.7 mm (0.028"), 0.9 mm (0.035"), 1.0 mm (0.039"), 1.1 mm (0.043"), 1.3 mm (0.051"), 1.5 mm (0.059"), 2.1 mm (0.083"), 3.3 mm (0.13").
If you are using non-standard drill sizes you will be charged additionally see our PRICE web page .
We are using METRIC drill sizes with step of 0.1 mm and all drill sizes are to be rounded to the nearest metric drill size. For instance if you are using 27 mils, 28 mils and 29 mils drill sizes they all will be rounded to 0.7 mm. To convert from IMPERIAL to METRIC you should divide your IMPERIAL drill size to 39.37 i.e. 130 mils / 39.37 = 3.3 mm and vice versa 1.0 mm = 39.37 mils after rounding = 39 mils. If this rounding is not taken into consideration you can easily make DRC violations - for instance you can use 34 mils drill with 50 mils pad/via which should pass the annular ring copper check as the pad-drill is 16 mils, but 34 mils drill = 0.86 mm will be rounded to 0.9 mm and the 1.27 mm pad/via will fail on the DRC check.

Q: When I send my Drill tools sizes are they before or after the plating?
A: The drill tools sizes are assumed the drill tool sizes for drilling. After the plating in double side PCB the finished hole size will be -0.1 mm. i.e. 0.7 mm drill size will produce 0.6 mm final hole size. You should take this into account when you design your board. The general rule of tumb when you design your custom library parts is that if your component lead is X mm your drill hole should be X+0.3-4 mm i.e. if your component lead is 0.4 mm you must provide 0.7 - 0.8 mm drill hole, if you make the clearance bigger you will have more waste of solder when soldering and you may not fill your pads properly, if you make the clearance smaller you will have problems when you stuff your components.
Q: It is possible to have non plated holes in my double side board?
A: No. All holes are to be plated. If you send us PCB files with split plated and non-plated holes files, the non-plated holes file will be ignored.

Q: What is non-standard drill size?
A: We are using standard drill rack with the following sizes: 0.7 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.3 mm, 1.5 mm, 2.1 mm, 3.3 mm. If you are using different drill sizes in your board you will be charged for using of non-standard drill sizes. For instance if you use in your board 0.6 mm 1.0 mm and 1.5 mm drill sizes you will be charged for using 0.6 mm drill size which is non-standard. Reffer to our PRICE web page for more details.
Q: What is your minimum drill size I can use in my design?
A: 0.6 mm (24 mils)

Q: What is your maximum drill size I can use in my design?
A: 5.0 mm (195 mils)

Q: What if I use under 0.6 mm in my design and I send it to you for manufacturing?
A: We'll not process your files and notify you that you can't use under 0.6 mm drill size in your design.

Q: What if I use over 5.0 mm in my design and I send it to you for manufacturing?
A: We'll replace all drill sizes over 5.0 mm with 5.0 mm and will not notify you about this, as we assume you read our web pages

Q: If I use 0.6 mm drill size what is the minimum pad diameter?
A: 1.06 mm which produce 0.203 mm annular copper ring (8 mils).
Q: I'm sending you my files. Can you substitute the drill sizes in my Drill file to your standard drill sizes?
A: No. We don't alter customer files. Increasing drill sizes outside your CAD program almost always create annular ring violations in DRC check, decreasing drill sizes may cause problems with your component stuffing, so if you want to use standard drill sizes just design your board with these.

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