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Milling: Difference between revisions
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*'''Roller diameter''' - Larger diameter helps the grain feed through the rollers.<ref name="Kunze"/><ref name=mashing>Evans E. [[Library|''Mashing.'']] American Society of Brewing Chemists and Master Brewers Association of the Americas; 2021.</ref> | *'''Roller diameter''' - Larger diameter helps the grain feed through the rollers.<ref name="Kunze"/><ref name=mashing>Evans E. [[Library|''Mashing.'']] American Society of Brewing Chemists and Master Brewers Association of the Americas; 2021.</ref> | ||
*'''Knurled vs fluted rollers''' - Roller morphology has an important effect on the crush by reducing damage to the husk. Modern ''commercial'' mills always have fluted rollers.<ref name=Mousia/><ref name=Kunze/><ref name=hob11>Miedl-Appelbee M. Brewhouse technology. In: Stewart GG, Russell I, Anstruther A, eds. [[Library|''Handbook of Brewing.'']] 3rd ed. CRC Press; 2017.</ref> On the other hand, most home brew mills have rollers with a diamond knurling pattern, which is necessary to improve the grain feed through small diameter rollers. A few home brew mills with relatively larger rollers (e.g. MattMill and Ss Brewtech) have a fluted morphology. However, the fluting pattern on these is completely different than commercial mills,<ref name=Kunze/> so it is unclear whether the fluting provides any benefit over knurling for home milling. | *'''Knurled vs fluted rollers''' - Roller morphology has an important effect on the crush by reducing damage to the husk. Modern ''commercial'' mills always have fluted rollers.<ref name=Mousia/><ref name=Kunze/><ref name=hob11>Miedl-Appelbee M. Brewhouse technology. In: Stewart GG, Russell I, Anstruther A, eds. [[Library|''Handbook of Brewing.'']] 3rd ed. CRC Press; 2017.</ref> On the other hand, most home brew mills have rollers with a diamond knurling pattern, which is necessary to improve the grain feed through small diameter rollers. A few home brew mills with relatively larger rollers (e.g. MattMill and Ss Brewtech) have a fluted morphology. However, the fluting pattern on these is completely different than commercial mills,<ref name=Kunze/> so it is unclear whether the fluting provides any benefit over knurling for home milling. | ||
*'''Drive shaft''' - A 1/2" integrated drive shaft is the most durable. If you have a drill that you plan to use for milling, verify that it can fit on the drive shaft for the mill you want to purchase. | *'''Drive shaft''' - A 1/2" integrated drive shaft is the most durable. If you have a drill that you plan to use for milling, verify that it can fit on the drive shaft for the mill you want to purchase. (See [[Milling#Driving the mill|Driving the mill]] below) | ||
*'''Hopper size''' - Hopper size is a matter of convenience and budget. It is most convenient to add the grain to the hopper all at once, however it doesn't hurt anything if you need to pause partway through milling in order to fill the hopper with more grain. Portability, weight, and storage space should be also be taken into account. Some mills have optional hopper extensions to purchase, or you can make a hopper extension yourself. | *'''Hopper size''' - Hopper size is a matter of convenience and budget. It is most convenient to add the grain to the hopper all at once, however it doesn't hurt anything if you need to pause partway through milling in order to fill the hopper with more grain. Portability, weight, and storage space should be also be taken into account. Some mills have optional hopper extensions to purchase, or you can make a hopper extension yourself. | ||
*'''Throughput rate''' - Differences in roller length and how fast the rollers feed grain is generally negligible for home brewers and not something that needs to be considered. Throughput depends largely on drive speed (RPM) and not the particular mill characteristics. | *'''Throughput rate''' - Differences in roller length and how fast the rollers feed grain is generally negligible for home brewers and not something that needs to be considered. Throughput depends largely on drive speed (RPM) and not the particular mill characteristics. | ||