CNC 3040
Spec
BobsCNC KL744
$350
Price
$750
300 × 400 mm
Work area
740 × 440 mm
55 mm
Z travel
85 mm
800 W
Spindle power
900 W
25 kg
Weight
16 kg
Cast aluminum
Frame
Laser-cut birch plywood with SG20U linear rails
Mach3 / GRBL (varies by seller)
Controller
GRBL 1.1
Mach3, Candle, UGS
Software
UGS, CNCjs, Candle, Fusion 360

BobsCNC KL744 CNC Router wins 3 of 5 spec categories. CNC 3040 Router (AliExpress) costs $400 less. The overall scores are virtually tied — the differences are in the details below.

Benchmark Scores

Side-by-side score comparison across all five benchmark dimensions.

64
CNC 3040

Overall

62
BobsCNC KL744
92 Value 82
62 Rigidity 35
50 Precision 55
30 Ease of use 78
58 Capability 48

CNC 3040 Router (AliExpress)

Pros

  • 800W water-cooled spindle at budget price
  • Cast aluminum frame is rigid
  • Can cut aluminum and brass
  • Huge aftermarket parts ecosystem

Cons

  • Quality varies hugely between sellers
  • May need rewiring for safety
  • Documentation is often poor or in Chinese
  • Shipping takes 2-6 weeks

BobsCNC KL744 CNC Router

Pros

  • Large 740x440mm work area at an excellent price
  • SG20U linear rails provide smooth, accurate motion
  • Well-documented assembly with clear instructions
  • BobsCNC has strong US-based customer support
  • Accepts full-size trim routers for serious cutting power

Cons

  • Plywood frame limits overall rigidity compared to metal frames
  • Router not included -- must purchase separately
  • Plywood is susceptible to humidity changes
  • Not suitable for cutting metals
  • Frame aesthetics are divisive -- looks DIY

Verdict

These routers are evenly matched with 5 wins each. The right choice depends on your specific priorities — compare individual specs and scores above to decide.

Where to Buy

Price-first merchant links with the clearest reason to click first.

Frequently Asked Questions

What is the difference between CNC 3040 Router (AliExpress) and BobsCNC KL744 CNC Router?

The CNC 3040 Router (AliExpress) ($350) features a 800W spindle with a 300×400mm work area and a Cast aluminum frame. The BobsCNC KL744 CNC Router ($750) features a 900W spindle with a 740×440mm work area and a Laser-cut birch plywood with SG20U linear rails frame. Both machines are evenly matched overall.

Which is better value for money — CNC 3040 Router (AliExpress) or BobsCNC KL744 CNC Router?

The CNC 3040 Router (AliExpress) is $400 cheaper at $350 vs $750. Our value scores rate the CNC 3040 Router (AliExpress) higher at 92/100.

Which router is easier to set up and use?

Based on our ease-of-use benchmarks, the BobsCNC KL744 CNC Router scores higher (78/100 vs 30/100). Both support Mach3, Candle, UGS among other software options.

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