Eagle Tool

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Hi,

I got some queries on Eagle PCB Design Tools Version 4.15. Hope you can help.

1) May I know what is the difference between "hole" and "drill" layer in Eagle board layout? When converted to *.drd gerber file, both looks the same. I use GCPrevue for gerber viewing.

2) How can I increase the hole size because it is limited to 3.2mm in Eagle. I want to add bigger holes to mount PCB leg.

3) Why drill holes is not generated in *.drd files when I added a "pad" on the bottom layer. I need to add "hole" on top of pad before drill hole is generated in *.drd file.

4) What is the difference between "gerb274x.cam" and "gerber.cam"? GCPrevue cannot view files generated with "gerber.cam". It appears distorted.

Thanks for your time.

:)
 
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