Yes, you can remove the parts from the Form 4/4B build platform and use your existing Form Wash. But to fit the new Form 4 build platform which has 19% larger build area (note: 30% larger build volume), you’ll need to upgrade to the new Form Wash (2nd Generation). The maximum part size that can fit in the legacy Form Wash is 14.5 × 14.5 × 17.5 cm. Form Wash (2nd Generation) also has 3x more agitation and improved longevity allowing you to wash 67% more parts before replacing your solvent.