I used a concrete saw (and a smaller one too) to create this presets. As ususal used Vital to FM different waves using the sample.
Also used Lowpass filters and comb filters to create 7 distinctive presets (Pads), plus the original samples: 9 presets. The originals
are very chaotic I used some filters to control the spectrum. Here is an example using 5 presets of the library:

Contributors

carlosrgz

I used Vital FM synthesis and several kinds of filters from it