How to make a layer mask in Ultiboard?

[atoll]

I need to create a mask layers (except paint coating PCB soldering points). Tell me how to do it.

Best regards, Vladimir.

[Tien_P]

Hi Vladimir,

Refer to this knowledge base:

http://digital.ni.com/public.nsf/allkb/4BCA9F2D8810C34A8625722E00763F9A

[atoll]

How to get a copy of the inversion layer of solder mask?

[Tien_P · Accepted solution]

Hi Vladimir,

In Ultiboard, when you turn on the solder mask layer the purple color indicates the areas where you can solder.  By default, all SMT and TH pads are exposed are protected.

If you want to get the reverse image, the only way is to export the gerber file.  In the export dialog, you there should be a "negative image" option, check that option.