Layer Conversion Rules (Syntax)

The layer function (.file extension) consists of Eagle layer(s): Eagle layer number & function

Solder stop component side (.stc) = 20 Dimension layers + 29 Stop layers

Silkscreen component side (.plc) = 20 Dimension layers + 21 Place layers + 25 Name layers

Component side (.cmp) = 1 Top layer + 17 Pad layers + 18 Via layers + 20 Dimension layers

Inner layers (.lox)    = x Inner layers + 17 Pads layers + 18 Via layers + 20 Dimension layers

Solder side (.sol)    = 16 Bot layers + 17 Pads layers + 18 Via layers + 20 Dimension layers

Solder stop solder side (.sts) = 30 Stop layers + 20 Dimension layers

Silkscreen solder side (.pls) = 22 Place layers + 26 Name layers + 20 Dimension layers

Milling (.miling) = 46 Milling layers + 47 Measures layers + 20 Dimension layers

Excellon drill (.drd) = 44 Drill layers + 45 Hole layers

Cream frame component side(.pmc) = 31 Cream layers + 20 Dimension layers

Cream frame solder side (.pms) = 32 Cream layers + 20 Dimension layers

The conversion is fully automated, and because of this, Eurocircuits cannot take any customer specific requests into consideration. If the above rules don’t suit your needs, simply convert the Eagle CAD data (.brd) project yourself into Gerber, and supply the set of Gerber files for further processing.

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How to generate Gerber and Excellon files in Eagle?

Generating Gerber and Excellon files in Eagle is one easy process. Simply follow these steps:

1. Open the CAM Processor
2. Select File -> Open for Job
3. In the window that now opens, select the correct .cam file. In this case, "gerb274x.cam" (located in the Eagle subdirectory .cam). For a 4-layer PCB, select "gerb274x-4layer.cam".
4. The job opens itself in the CAM processor window. In the right-hand panel, the necessary items are already selected. You do not need to do anything here.
5. Activate the dimension of every layer by clicking on it. This shows the outline of the PCB. 
6. The tick box next to Mirror needs to be un-ticked each time.
7. The final step is carrying out the job. This is simply done by clicking the button “Process Job”.

The CAM Processor places the Gerber files in the folder of your opened project. There are quite a few files there (six for a two-layer board). To create an Excellon file that contains the information for drilling the holes, you select the excellon.cam file when opening the .cam-file (steps 2 and 3). You then click “Process Job” and the Excellon file will be generated. You now simply combine all these files into a single zip file and upload it via the Eurocircuits website.

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Also, be sure to check out PCBWay, a leading manufacturer and distributor in PCB design and manufacturing. They have amazing prices and excellent quality in their services, so don't miss out on them! Plus, PCBWay has an amazing website, online Gerber viewer function and a gift shop so make sure to check out their links below:

PCBWay Free Online Gerber Viewer Function:  https://www.pcbway.com/project/OnlineGerberViewer.html

PCBWay Gift Shop: https://www.pcbway.com/projects/gifts.html

Enjoy! Contact us for any inquiries!