Big blocks are processed on multi-wire or gang-saw machines. The processing of such big machines plays an important role in the quality of granite. Material processed on big machines is more consistent in thickness. You get even thickness on big machine processing.
Small blocks are processed on vertical cutters. These are not very big machines and have an effect of vibration due to the light weight of machinery. This vibration affects the thickness of granite. The granite processed on single blade vertical cutters have thickness variation on +,- 2 mm. Getting the right thickness is also possible on these cutters, but it affects the overall production After the invention of multi-blade vertical cutters, this problem is solved, but it also needs a extra care while cutting the blocks.