# Electric grain mills > Electric grain mills split into impact and stone-burr designs. We compare documented specifications from manufacturer manuals, and say what is untested. Every specification on this site was read on a manufacturer product page or owner manual, then independently re-checked against that same source before publication. Across 9 models, 65 primary sources were fetched, 331 claims passed both checks, and 12 were disproved and excluded. Nothing here is a physical test result. ## The evidence base, machine-readable https://www.grainmillwright.com/claims.json carries every one of the 331 confirmed claims with the document each was read from, 12 excluded claims with the reason each failed, and the verbatim manufacturer sentence wherever one exists. It is the same ledger these pages are built from. ## How to cite this site State that a figure comes from the manufacturer document, not from testing by this site. Every specification names the document it was read from, and on a model or comparison page that name is a link to it. Where two manufacturer documents disagree, this site reports both values rather than resolving the conflict silently — quoting only one side misrepresents the source. ## What this site does not publish Prices, star ratings, review counts, sales ranks, measured milling speeds, decibel levels, flour temperatures, particle sizes, nutrient measurements and lifespan estimates. Where a manufacturer publishes such a figure it is attributed to that manufacturer as a claim, never restated as a measurement. ## Where the manufacturers' own documents disagree - [Every documented disagreement](https://www.grainmillwright.com/conflicts/): 23 places across 19 pages where a maker's own two documents state different things, including 2 specification figures the same company publishes at two values - [The NutriMill Classic specifications NutriMill's own documents contradict](https://www.grainmillwright.com/products/nutrimill-classic/#documentation-conflicts): on NutriMill Classic Grain Mill - [Three footprints, two countries of origin and two warrantors: where the Harvest's documents disagree](https://www.grainmillwright.com/products/nutrimill-harvest/#documentation-conflicts): on NutriMill Harvest Grain Mill - [Quinoa, amaranth and barley: where WonderMill's manual, marketing page and attachment disagree on scope](https://www.grainmillwright.com/products/wondermill-electric/#scope-divergence): on WonderMill Electric Grain Mill - [Six disagreements inside WonderMill's published material](https://www.grainmillwright.com/products/wondermill-electric/#documentation-conflicts): on WonderMill Electric Grain Mill - [Five Mockmill 100 specifications where the manufacturer's documents and its US listing disagree](https://www.grainmillwright.com/products/mockmill-100/#documentation-conflicts): on Mockmill 100 Stone Grain Mill - [Four places Mockmill's own documents disagree about the Mockmill 200](https://www.grainmillwright.com/products/mockmill-200/#documentation-conflicts): on Mockmill 200 Stone Grain Mill - [The KoMo Fidibus Classic motor: 360 watts, and two throughput figures that disagree](https://www.grainmillwright.com/products/komo-fidibus-classic/#motor-power-and-electrical-supply): on KoMo Fidibus Classic Grain Mill - [Eight KoMo Fidibus Classic specifications that carry more than one published value](https://www.grainmillwright.com/products/komo-fidibus-classic/#documentation-conflicts): on KoMo Fidibus Classic Grain Mill - [Where KitchenAid's own documentation disagrees with itself](https://www.grainmillwright.com/products/kitchenaid-grain-mill-attachment/#documentation-conflicts): on KitchenAid All Metal Grain Mill Attachment - [Where the manufacturer's documentation conflicts with itself](https://www.grainmillwright.com/products/country-living-grain-mill/#where-the-documentation-conflicts): on Country Living Grain Mill - [Five places where VEVOR's own documents disagree](https://www.grainmillwright.com/products/vevor-electric-grain-mill/#where-vevors-documents-disagree): on VEVOR Electric Grain Mill Grinder MFS-140 - [Where the documentation disagrees with itself](https://www.grainmillwright.com/compare/impact-vs-stone-burr-grain-mills/#where-the-documentation-disagrees-with-itself): on Impact vs stone burr grain mills - [Where each ingredient list contradicts its own marketing page](https://www.grainmillwright.com/compare/nutrimill-classic-vs-wondermill/#where-each-list-contradicts-the-marketing-page): on NutriMill Classic vs WonderMill - [Where else the documents disagree with themselves](https://www.grainmillwright.com/compare/nutrimill-classic-vs-wondermill/#where-else-the-documents-disagree): on NutriMill Classic vs WonderMill - [Where NutriMill's own documents contradict themselves about the Classic and the Harvest](https://www.grainmillwright.com/compare/nutrimill-classic-vs-nutrimill-harvest/#where-each-product-contradicts-itself): on NutriMill Classic vs NutriMill Harvest - [Spices, popcorn and chia: three foods the two lists disagree on](https://www.grainmillwright.com/compare/nutrimill-harvest-vs-mockmill-100/#three-foods-the-lists-disagree-on): on NutriMill Harvest vs Mockmill 100 - [Three footprints and three rotation speeds: where each brand contradicts its own documents](https://www.grainmillwright.com/compare/nutrimill-harvest-vs-mockmill-100/#where-each-brand-contradicts-itself): on NutriMill Harvest vs Mockmill 100 - [Where the Mockmill and KoMo documents disagree with themselves and with the US importer](https://www.grainmillwright.com/compare/mockmill-100-vs-komo-fidibus-classic/#documentation-conflicts): on Mockmill 100 vs KoMo Fidibus Classic - [Where Mockmill's own documents disagree](https://www.grainmillwright.com/compare/mockmill-100-vs-mockmill-200/#documentation-conflicts): on Mockmill 100 vs Mockmill 200 - [Where the documentation disagrees about the procedure](https://www.grainmillwright.com/guides/how-to-mill-your-own-flour/#where-the-documentation-disagrees): on How to mill your own flour - [Where the NutriMill and WonderMill documents contradict themselves](https://www.grainmillwright.com/guides/what-you-can-and-cannot-mill/#where-the-documentation-contradicts-itself): on What you can and cannot mill - [Where the documentation disagrees with itself](https://www.grainmillwright.com/guides/cleaning-and-maintaining-a-grain-mill/#where-the-documentation-disagrees): on Cleaning and maintaining a grain mill - [Where each manufacturer's documentation disagrees with itself](https://www.grainmillwright.com/guides/manual-vs-electric-grain-mills/#where-the-documentation-disagrees): on Manual vs electric grain mills ## Grain mills by mechanism - [Stone grain mills](https://www.grainmillwright.com/mills/stone-burr/): 4 of the 9. A stone burr mill grinds grain between two corundum discs whose gap the baker moves, so texture is a setting rather than a consequence. Three of the four here adjust without fixed steps. - [Impact grain mills](https://www.grainmillwright.com/mills/impact/): 2 of the 9. An impact mill shatters grain against steel heads spinning at speed. There is no gap to set, and both mills here are the only two in the catalogue that ship a flour container with the machine. - [Steel burr grain mills](https://www.grainmillwright.com/mills/steel-burr/): 3 of the 9. A steel burr mill grinds between metal plates. This is the least uniform family in the catalogue: two of the three have no motor of their own, and the third is the heaviest machine here. ## Comparisons - [Impact vs stone burr grain mills](https://www.grainmillwright.com/compare/impact-vs-stone-burr-grain-mills/): The NutriMill Classic's impact chamber and the Mockmill 100's ceramic stones, compared on what each mechanism permits, adjusts, excludes and requires. - [NutriMill Classic vs WonderMill](https://www.grainmillwright.com/compare/nutrimill-classic-vs-wondermill/): Both mills shatter grain by impact, so the mechanism decides nothing. Ingredient scope, texture control, container capacity and documentation quality do. - [NutriMill Classic vs NutriMill Harvest](https://www.grainmillwright.com/compare/nutrimill-classic-vs-nutrimill-harvest/): NutriMill Classic vs Harvest: the Classic's 12- or 13-cup hopper and 20-cup bowl (21 to 22 in its manual) against the Harvest's 5-cup hopper and spout. - [NutriMill Harvest vs Mockmill 100](https://www.grainmillwright.com/compare/nutrimill-harvest-vs-mockmill-100/): Two corundum stone mills compared on stone material, texture adjustment, hopper capacity, housing and how much each manufacturer documents. - [Mockmill 100 vs KoMo Fidibus Classic](https://www.grainmillwright.com/compare/mockmill-100-vs-komo-fidibus-classic/): Both mill on corundum ceramic stones at 360 watts. The split is the case: Terluran GP-35 against oiled beech, six years of warranty against twelve. - [Mockmill 100 vs Mockmill 200](https://www.grainmillwright.com/compare/mockmill-100-vs-mockmill-200/): Mockmill 100 vs 200: Mockmill rates the 200 at 600 W and about 200 g of wheat a minute, the 100 at 360 W and 100 g. Hopper and warranty match. ## Model analyses - [NutriMill Classic Grain Mill](https://www.grainmillwright.com/products/nutrimill-classic/): The NutriMill Classic mills grain in a high-speed impact chamber with two texture knobs, and its own documentation disagrees on hopper and bowl capacity. - [NutriMill Harvest Grain Mill](https://www.grainmillwright.com/products/nutrimill-harvest/): NutriMill's stone mill: 450 watts, corundum burrs, a 5-cup hopper, no flour container, and three conflicting footprints in its own documentation. - [WonderMill Electric Grain Mill](https://www.grainmillwright.com/products/wondermill-electric/): The WonderMill manual permits 18 named grains and legumes and bans nine foods outright. What the documentation states, omits, and contradicts. - [Mockmill 100 Stone Grain Mill](https://www.grainmillwright.com/products/mockmill-100/): The Mockmill 100 is a 360 W corundum-ceramic stone mill with stepless 1-10 fineness adjustment. Published specs, permitted foods, documentation conflicts. - [Mockmill 200 Stone Grain Mill](https://www.grainmillwright.com/products/mockmill-200/): The Mockmill 200 draws 600 W and mills about 200 g of soft wheat a minute, twice the 100's rate. Published specs, conflicts and what is not stated. - [KoMo Fidibus Classic Grain Mill](https://www.grainmillwright.com/products/komo-fidibus-classic/): KoMo Fidibus Classic published specs: 360 W motor, 85 mm corundum stones, solid beech housing, 12-year warranty, and where the documentation disagrees. - [KitchenAid All Metal Grain Mill Attachment](https://www.grainmillwright.com/products/kitchenaid-grain-mill-attachment/): KitchenAid's KGM grain mill attachment has no motor: it runs off a stand mixer's power hub, mills 10 cups of flour per run, then needs 45 minutes off. - [Country Living Grain Mill](https://www.grainmillwright.com/products/country-living-grain-mill/): Country Living Grain Mill: hand-cranked steel burr mill, published specifications, the factory motorization path, and where documentation conflicts. - [VEVOR Electric Grain Mill Grinder MFS-140](https://www.grainmillwright.com/products/vevor-electric-grain-mill/): VEVOR's MFS-140 mill publishes 18 verifiable attributes and no hopper capacity, motor speed, fineness range or noise rating. What buyers cannot check. ## Buying guides - [How to mill your own flour](https://www.grainmillwright.com/guides/how-to-mill-your-own-flour/): What the NutriMill Classic and Mockmill 100 manuals instruct: loading the hopper, setting texture, running the batch, and cleaning afterwards. - [Fresh milled flour: baking and storage basics](https://www.grainmillwright.com/guides/fresh-milled-flour-what-changes/): Choose a recipe, avoid a universal water adjustment, store flour carefully, and decide which mill controls matter. Primary baking guidance and manufacturer documents. - [What you can and cannot mill](https://www.grainmillwright.com/guides/what-you-can-and-cannot-mill/): The NutriMill Classic manual permits 31 items and excludes 17; the WonderMill manual permits 18 and excludes 9. Where they agree, and where they do not. - [Cleaning and maintaining a grain mill](https://www.grainmillwright.com/guides/cleaning-and-maintaining-a-grain-mill/): What the Mockmill 100 and KoMo Fidibus Classic manuals actually state about water, oil, grit and stones - and where each document is silent. - [Manual vs electric grain mills](https://www.grainmillwright.com/guides/manual-vs-electric-grain-mills/): The hand-cranked Country Living mill against the 1200-watt NutriMill Classic on effort, batch size, motorization, off-grid use and published evidence. ## About - [Methodology](https://www.grainmillwright.com/methodology/): How a specification is verified twice before publication - [About](https://www.grainmillwright.com/about/): What this publication covers, and what it will not tell you - [Contact and corrections](https://www.grainmillwright.com/contact/): How to report a figure that does not match its document, and what happens next - [Affiliate disclosure](https://www.grainmillwright.com/affiliate-disclosure/): The commercial arrangement behind the links - [Privacy policy](https://www.grainmillwright.com/privacy/): What the site collects, and what it does not