Little Machine Shop HiTorque 3990

Last updated: November 4, 2026

Little Machine Shop HiTorque 3990
2.8/5#8 of 9 in mini mills milling machines
2.8

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
Check price at Little Machine Shop$1,449Search eBay

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.

Pros
  • 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
Cons
  • 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.

ModelTableRatingPrice
Little Machine Shop HiTorque 3990 (this one)4.7 x 18.1 in2.8/5$1,449
Little Machine Shop HiTorque 64504.7 x 18.1 in2.6/5$2,499
Little Machine Shop HiTorque 65706.3 x 27.6 in3.1/5$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 numberHiTorque 3990
Capacity
Table4.7 x 18.1 in
Longitudinal (X) travel11.8 in
Cross (Y) travel5.1 in
Head (Z) travel10.6 in
Quill travel2.8 in
Spindle and motor
Motor500 W (0.7 hp)
Motor typeBrushless DC, belt drive
Brushless motorYes
Spindle speeds100 to 2,500 rpm
Variable speedYes
Spindle taperR8
Head tiltNone
Features
Power feedNo
Digital readoutNo
Weight124 lb

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