Grizzly G8689Z 4x16 Mill/Drill
#3 in Mini millsFull review
A starter R8 mill for small parts and learning, with dealer support.
Grizzly $970 eBay$970
The Grizzly G8689Z 4x16 Mill/Drill is the better milling machine overall, rated 3.0 to 2.8. The Grizzly G8689Z 4x16 Mill/Drill leads on price. The Little Machine Shop HiTorque 3990 wins on motor and table size. The Grizzly G8689Z 4x16 Mill/Drill costs $479 less ($970 vs $1,449).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.
Little Machine Shop HiTorque 3990
#8 in Mini millsFull review
For a hobbyist machining small parts in aluminum, brass and light steel who wants a quiet, well-supported mini mill.
Little Machine Shop $1,449 eBay$1,449
Which should you buy?
- Choose the Grizzly G8689Z 4x16 Mill/Drill for price ($970 vs $1,449).
- Choose the Little Machine Shop HiTorque 3990 for motor (500 W motor vs 373 W motor) and table size (4.7 x 18.1 in table (85.1 sq in) vs 3.6 x 15.8 in table (57.1 sq in)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every mini mills milling machine; a clear win is highlighted. How we rank explains each one.
| Factor weight | Grizzly G8689Z 4x16 Mill/Drill | Little Machine Shop HiTorque 3990 |
|---|---|---|
| Overall rating | 3.0/5 | 2.8/5 |
| Price 25% | 94 $970 | 60 $1,449 |
| Table size 20% | 0 3.6 x 15.8 in table (57.1 sq in) | 10 4.7 x 18.1 in table (85.1 sq in) |
| Motor 15% | 4 373 W motor | 25 500 W motor |
| Features 30% | 50 R8 spindle, variable speed, tilting head | 55 R8 spindle, brushless motor, variable speed |
| Warranty 10% | 33 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Grizzly G8689Z 4x16 Mill/Drill | Little Machine Shop HiTorque 3990 | |
|---|---|---|
| Capacity | ||
| Table | 3.6 x 15.8 in | 4.7 x 18.1 in |
| Longitudinal (X) travel | 9.1 in | 11.8 in |
| Cross (Y) travel | 4 in | 5.1 in |
| Head (Z) travel | - | 10.6 in |
| Quill travel | - | 2.8 in |
| Spindle and motor | ||
| Motor | 373 W (0.5 hp) | 500 W (0.7 hp) |
| Motor type | - | Brushless DC, belt drive |
| Brushless motor | - | Yes |
| Spindle speeds | 0 to 2,500 rpm | 100 to 2,500 rpm |
| Variable speed | Yes | Yes |
| Spindle taper | R8 | R8 |
| Head tilt | 45° each way | None |
| Features | ||
| Power feed | - | No |
| Digital readout | - | No |
| Weight | 135 lb | 124 lb |
| Warranty | 1 year | - |