Similarly, in the case of the Matza, the Matzot that will be used for the first two nights of Pesach, must have been manufactured with the purpose of being used for the Mitzva of Matza. Obviously, most Matzot are made with this purpose in mind. Some late rabbinic authorities, however, questioned the medium of the baking machines in this process, even when the machine's operator articulates the proper intention. In other words: when the Matzot are baked on a machine, does this interrupts the 'human process' of intentionality? This is why some authorities will require to use for the two night of Pesach --when we say the berakha al akhilat Matza-- Matza which was baked completely by hand, without machinery.
The disadvantages of hand made Matza are that 1. these Matzot are significantly more expensive than those made by machine. 2. There is more chances for human errors than when the Matzot are baked by machines.
In sum, if one can easily afford the hand-made Matzot, they should be used for the fist two nights. If not, one should not incur in extra expenses to abide by this stricter point of view (chumra). In this case, many Rabbis would suggest to use for the first two nights Matza Shemura, (which is the most meaningful hidur) made by machine.
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