The Grizzly Mini Mill is actually one of a series of mini mills sold by different vendors, all coming from one manufacturer in slightky different versions (Google: "Mini Mill").
I found an even better version than the Grizzly version, at the Micro-Mark website. It has several key advantages over the Grizzly version:
Micro-Mark Item # 84630 High Precision Heavy Duty R8 Miniature Milling Machine:
- BELT drive versus the Grizzly's plastic gear drive. Much more tolerant of shocks & overloading, and much quieter
- 500w (4.3 amps) motor versus the 350 watt Grizzly motor (Yes, I know the Grizzly site says the motor is higher wattage than 350, but it's really 350 per the knowledgeable "mini mill comparison" site)
- Brushless motor so it is quieter, stronger, and longer lasting
- .05” graduation clicks on table x and y adjustments, versus the Grizzly's .0625" (1/16") graduations, so doing the math for x and y movements is easier
- Torsion spring versus gas strut (the gas strut gives up with time as it cannot handle the ongoing constant load of supporting the head)
- Same 7” stroke (!!!
- R8 spindle in case I want to try machining in addition to woodworking
- Drill chuck pre-installed from factory
- Nice "alloy silver" color
- Reasonable freight ($98), and UPS delivery versus hard-to- pan-for truck delivery)
- Similar size to Grizzly, at 20w x 20d x 30h
- Similar 110 lb weight
- More costly because of the 500 watt brushless motor and belt drive, so $825 + freight is 23.95 +74 = $98 = $923 total versus the Grizzly at $645 + approx $75 = $720, but the belt drive alone is a $155 upgrade on other versions of the mini mill, and the 40% more power plus brushless motor make the whole package a better deal.
Plus, someone on one of the machining sites suggested an easy way to keep drill shavings and sawdust out of the table's lubricated ways: add a homemade wood table cover to keep sawdust out of the ways, AND provide a replaceable "drill into" backing surface for drilling. This makes connecting a vacuum unnecessary to keep the ways clean and unclogged.