
ACMER ASCARVA 3S
Best for · Compact 500W CNC for small parts
Compact all-aluminum CNC router with a 500W spindle and 300 × 180 × 78 mm work area.
Work area
300×180×78 mm
Spindle power
500 W
Spindle speed
12000 RPM
Starting at
$299.00
$499.00
Budget: Under $500
A sub-$500 budget can open compact or 400 mm 300W desktop CNC—but it will not fund a production mill or a waiting 500W 400 mm preorder pack. Use this band to prove paid parts.
Expect compact 500W cells like ASCARVA 3S and 400 mm 300W routers like VEVOR S4040. Useful for wood plaques, acrylic carves, and process learning—not for sheet-scale furniture or unattended aluminum.
Bits, spoilboards, dust collection, CAM, and scrap often exceed the sticker. Model first-year tooling before treating a $300–$400 router as a complete cell.
If 400 mm jobs need more than 300W, or you can wait on a preorder 500W pack, stretching to ASCARVA 4S may beat stacking accessories on an undersized spindle. Do not stretch for unused travel.

Best for · Compact 500W CNC for small parts
Compact all-aluminum CNC router with a 500W spindle and 300 × 180 × 78 mm work area.
Work area
300×180×78 mm
Spindle power
500 W
Spindle speed
12000 RPM
Starting at
$299.00
$499.00

Best for · Budget 400 mm CNC for wood and acrylic projects
Open 300W GRBL desktop CNC with a 400 × 400 × 60 mm work area and touchscreen offline controller.
Work area
400×400×60 mm
Spindle power
300
Control
GRBL 1.1
Starting at
$369.90
Yes for narrow wood and acrylic catalogs if tooling and dust control are funded. Treat it as a constrained starting cell and plan the envelope or spindle upgrade when blanks outgrow the machine.
Only when paid blanks need the travel. Compact 500W can be the better cell for small, denser carves.
Shortlist machines from your constraints
Estimate payback and annual ROI
Model first-year cost and cost per unit