First, start generating volumizers using either Транспортировочный голем or Металлический дарователь. For these small volumizers, you should only sell them or triple them, no need to attach them. Then, with Страж апекситов, put scaled volumizers on your mechs in combat. Reborning it double its power, and Страшный ара and Тит Ривендер further multiply the magnetic count. Every fight, your board will be better and better because each combat will scale volumizers for future combats. Rolling for board improvements is usually better than buying volumizers from shop.