A capable mini mill with a depth readout, but R8 rivals give more tooling choice for the money.
Amazon $1,555 eBay
For a hobbyist machining small parts in aluminum, brass and light steel who wants a quiet, well-supported mini mill.
- 4.7 x 18.1 inTable
- 500 W (0.7 hp)Motor
- 100 to 2,500 rpmSpeeds
- 124 lbWeight
Price checked November 4, 2026. As an Amazon Associate we earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.
- Brushless motor with 100 to 2,500 rpm and no gears to shift
- Solid column and air spring head keep the head aligned at any height
- The cheapest R8 mill from a US seller that stocks parts and manuals
- Small 18 x 4.7 in table and 11.8 in of X travel
- No readout, power feed or head tilt
The Little Machine Shop HiTorque family
Every Little Machine Shop HiTorque model we rank, smallest first. Ratings compare each against its own table size.
| Model | Table | Rating | Price |
|---|---|---|---|
| Little Machine Shop HiTorque 3990 (this one) | 4.7 x 18.1 in | 2.8/5 | $1,449 |
| Little Machine Shop HiTorque 6450 | 4.7 x 18.1 in | 2.6/5 | $2,499 |
| Little Machine Shop HiTorque 6570 | 6.3 x 27.6 in | 3.1/5 | $3,399 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its table size. How we rank explains each one.
Specifications
| Model number | HiTorque 3990 |
|---|---|
| Capacity | |
| Table | 4.7 x 18.1 in |
| Longitudinal (X) travel | 11.8 in |
| Cross (Y) travel | 5.1 in |
| Head (Z) travel | 10.6 in |
| Quill travel | 2.8 in |
| Spindle and motor | |
| Motor | 500 W (0.7 hp) |
| Motor type | Brushless DC, belt drive |
| Brushless motor | Yes |
| Spindle speeds | 100 to 2,500 rpm |
| Variable speed | Yes |
| Spindle taper | R8 |
| Head tilt | None |
| Features | |
| Power feed | No |
| Digital readout | No |
| Weight | 124 lb |
Alternatives in this table size
A small, supported R8 mill for the hobbyist with limited bench space.
Grizzly $1,395 eBayFor a hobbyist who wants a mini mill ready to cut to the thousandth, with the readout installed and set up.
Little Machine Shop $2,499 eBayCompare
Compare the Little Machine Shop HiTorque 3990 with any other milling machine →
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