Check out a generator for Substance Designer by Dennis Porter that facilitates quicker mask creation for trim sheets and other rectangular forms.

Features

• Driven by Pixel Processors to maximize graph speed: ~7ms at 2K
• Fractional system automatically determines X/Y offset values for you, no need to use a calculator for precise offsets
• Unclamped parameter ranges allow masks to be as small as you need
• Individual control for height & width, vertical & horizontal position
• Mask interstice control, based on pixel size — uniform or custom X/Y controls
• Reference grid with division and thickness control
• Solid white mask output
• Luminance variation output by mask or by fraction
• X/Y gradient output
• Very Cheap Flood Fill output (~2ms vs 25+ms Flood Fill node)
• Custom inputs are automatically masked
• Sub-fractional X/Y offset for pattern input (to align within the mask)
• Non-square support

Extra functions if you have access to the SBSAR.

• isBetween – returns 0 or 1 for whether an input value is between two other values
• reciprocal_float1 – returns 1 divided by an input (for converting large numbers to their unit size in 0-1 decimal space)
• reciprocal_float2 – same as before except for a float2
• frac_float2 – it’s frac except it works with float2 inputs
• half_float1 – reduces input value by half

Included Files

• Non-commercial license – SBSAR only
• Commercial licenses – SBS and SBSAR

You can learn more here.

Get the tool