Curated comparison
Compare ACMER's compact 300 × 180 mm ASCARVA 3S with the 400 × 400 mm 4S 500W package—same spindle class, different envelope and availability.
ACMER
Current price
$299.00
$499.00
Compact 500W CNC for small parts
ACMER
Current price
$588.00
$898.00
Budget 400 mm CNC with touchscreen control
Specifications are catalog facts. Business economics are estimates under shared assumptions — not a universal ranking.
| Spec | ACMER ASCARVA 3S | ACMER ASCARVA 4S 500W |
|---|---|---|
| Price range | Current price $299.00 $499.00 | Current price $588.00 $898.00 |
| EquipmentSelect Score | 7.0 / 10 | 7.2 / 10 |
| Best for | Compact 500W CNC for small parts | Budget 400 mm CNC with touchscreen control |
| Not ideal for | Small 300 × 180 mm X/Y envelope | Preorder product with estimated shipping rather than immediate fulfillment |
| Work area | 300 × 180 × 78 mm | 400 × 400 mm |
| Spindle power | 500 W | 500 W |
| Spindle speed | 12000 RPM | — |
| Positioning accuracy | ±0.025 mm | — |
| Enclosure | open | open |
| Machine type | cnc-router | cnc-router |
| Maximum engraving speed | — | 10000 mm/min |
| Controller | ESP32 | 3.5 in touchscreen |
Best under these assumptions
Estimates use one shared job volume, selling price, and labor assumption. Shipping, accessories, and installation stay on each machine's cost profile. Extra startup quotes you entered (ventilation, tooling, software) apply only where that equipment class uses them. Catalog prices are merchant facts when published. This is not a claim that any machine is universally best.
Best under these assumptions
Scrap and failure rate are not modeled. Shipping, accessories, and installation still come from the cost profile for each machine. Extra startup quotes carry from Calculate when they apply to that class.
| Metric | ACMER ACMER ASCARVA 3S Best under these assumptions | ACMER ACMER ASCARVA 4S 500W Rank 2 |
|---|---|---|
| Purchase price | Current price $299.00 $499.00 | Current price $588.00 $898.00 |
| Estimated setup cost | $460 | $460 |
| Estimated initial investment | $759 | $1,048 |
| Estimated operating cost | $115/mo | $115/mo |
| Estimated cost/job | $24.25Lowest cost/job | $24.25 |
| Estimated monthly contribution | $1,355Highest contribution | $1,355 |
| Estimated payback | 0.6 monthsFastest payback | 0.8 months |
| Estimated ROI | 2142.3%Best ROI | 1551.5% |
| Recommended use case | Compact 500W CNC for small parts | Budget 400 mm CNC with touchscreen control |
Estimates are based on the information you provide and should not be considered financial advice. We do not store your calculator inputs on a server.
Editorial fit — not modeled payback
Choose 3S when compact carves ship now and you want a live in-stock cell. Choose 4S when 400 mm jobs are already paid and you can wait on the preorder window.
Editorial fit — modeled rank is in Business Economics
Choose 3S when compact carves ship now and you want a live in-stock cell. Choose 4S when 400 mm jobs are already paid and you can wait on the preorder window.
It is the same spindle-power class with a larger XY, touchscreen control, and a preorder 500W pack. Confirm the exact variant before treating brochure options as interchangeable.
Only if the preorder window fits the first paid jobs. VEVOR S4040 is the live 400 mm peer at 300W if waiting is not acceptable.
A practical framework for matching CNC work area, rigidity, spindle class, materials, and shop overhead to paid work.
Wood CNC work starts with the blanks you ship: plaque size, relief depth, and fixture margin. Shortlist envelope and spindle class before chasing a larger frame you will not fill.
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.
Under $1,000 covers the live desktop CNC shortlist: compact 500W, 400 mm 300W, and the 400 mm 500W ACMER pack. Large-format sheet routers sit well above this band.
Compare ACMER's compact 300 × 180 mm ASCARVA 3S with the 400 × 400 mm 4S 500W package—same spindle class, different envelope and availability.
Compare compact 500W ACMER ASCARVA 3S with the 400 mm 300W VEVOR S4040 for shops choosing envelope versus spindle class on a desktop CNC budget.
Shortlist machines from your constraints
Model first-year cost, setup, and cost per unit
Recommend a customer price from labor and margin
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