The most common misunderstanding about the three Carbon-CNC models is that they are not an "entry, mid, and high-end" capability ladder. Machining accuracy, spindle speed, cutting speed, and collet spec are identical on all three. The difference is how big a part you can fit, and where the machine has to go. This article works backward from part size so you can decide in one step.
The One-Minute Version
- All three hold ±0.05mm, reach 20,000 rpm, cut at 2500 mm/min, and use ER11. Choosing the wrong model won't make your parts less accurate; it will only mean your parts don't fit.
- Measure your largest part first, then add 20–30mm per side for clamping margin. Square parts are limited by the short side and long parts by the long side; check the two limits separately.
- Carbon Lite (360×300×80mm): complete 5–7-inch FPV frame part sets, ASTM standard test coupons, small electronics carrier plates.
- Carbon Pro (510×760×100mm): frames of 10 inches and up, multirotor center plates, long arm brace plates, full-batch nesting.
- Carbon Pro EX (710×900×150mm): standard carbon sheets of 500×500mm and larger loaded directly, large multirotor and fixed-wing structural parts. Integrated dust collection is standard, and the table carries 20kg.
- The Pro EX is a floor-standing machine on its own stand (148.9kg). It needs dedicated floor space and does not sit on a workbench.
First, What the Three Machines Have in Common
This part actually matters more than the differences, because it answers the question "will choosing the smaller machine sacrifice quality?" The answer: no.
| Item | Carbon Lite | Carbon Pro | Carbon Pro EX |
|---|---|---|---|
| Machining / positioning accuracy | ±0.05 mm | ±0.05 mm | ±0.05 mm |
| Max spindle speed | 20,000 rpm | 20,000 rpm | 20,000 RPM |
| Cutting / feed rate | max. 2500 mm/min | max. 2500 mm/min | 2500 mm/min |
| Collet | ER11 | ER11 | ER11 |
| End mill shank diameter | 4 / 6 mm | 4 / 6 mm | 4 / 6 mm |
| Carbon fiber dust protection | Standard | Standard | Standard |
| In other words: the same DXF, the same tool, and the same parameters produce parts of the same quality level on all three machines. The only things you need to decide are size and installation requirements. | |||
Work Backward from Your Largest Part
You can't use the entire working area for parts. The edges have to be left for hold-down clamps or the vacuum seal border, plus tool lead-in and lead-out moves. In practice, allow 20–30mm per side. After subtracting that, the usable sizes look like this:
Machine Ranges by Largest Part Dimension
After subtracting 30mm clamping margin per side; square parts are limited by the short side, long parts by the long side
Z travel (Lite 80mm / Pro 100mm / EX 150mm) isn't just for sheet thickness. It has to be shared among fixture height + spoilboard thickness + workpiece thickness + tool stickout. Carbon fiber sheet itself is usually only 1–6mm, so Z is rarely the limit; but if you use taller fixtures or machine 3D parts such as carbon tube clamps, recalculate this number.
Where the Three Really Differ
| Item | Carbon Lite (Entry-Level) | Carbon Pro (Professional) | Carbon Pro EX (Advanced) |
|---|---|---|---|
| Working area | 360×300×80 mm | 510×760×100 mm | 710×900×150 mm |
| Spindle | BLDC 200W | BLDC 350W | DC brushless 350W |
| Machine format | Desktop | Desktop | Floor-standing, on its own stand |
| Dust collection | Optional module | Optional module | Integrated (standard) |
| Table load capacity | — (not listed in spec sheet) | — (not listed in spec sheet) | 20 kg |
| Machine weight | — (not listed in spec sheet) | — (not listed in spec sheet) | 148.9 kg |
| Overall dimensions | — (not listed in spec sheet) | — (not listed in spec sheet) | W1012×L1154×H1383.5 mm |
| Operating noise | — (not listed in spec sheet) | — (not listed in spec sheet) | 39.6 / <66 dB(A) |
| "Not listed in spec sheet" means exactly that: the spec sheet doesn't include the item, and we won't fill in a number for it. If you need the weight and overall dimensions of the Lite or Pro to plan where it goes, ask us directly. | |||
What the Spindle Power Difference Means in Practice
The Lite is 200W; the Pro and EX are 350W. Maximum spindle speed is the same on all three. The difference is the ability to hold speed: when cutting thicker sheet, or taking a deeper pass with a φ6 tool, a more powerful spindle is less likely to bog down under cutting load. In practice it makes little difference on 1–3mm thin sheet; the 350W headroom shows up at 5mm and above, or in long continuous batch runs.
Dust Collection Is Where the Three Differ Most
On the Lite and Pro, dust collection is an optional module; on the Pro EX it is a dust collection system integrated into the machine. That difference matters much more with carbon fiber than with ordinary materials. Taiwan's regulations classify carbon fiber dust as a Class 4 nuisance dust (respirable 5 mg/m³, total dust 10 mg/m³), and measurements in published research show that typical trimming conditions already exceed the limits right at the cutting source.
If you choose the Lite or Pro, treat the dust collection module as required equipment, not an add-on. Carbon dust is conductive, and the material supplier's safety data sheet states plainly that accumulated dust may cause electrical shorts or other electrical malfunctions. Operators also need P100-class respiratory protection, and cleanup should always be done with a HEPA vacuum, never by blowing with compressed air. The Pro EX builds this into the machine because it handles larger sheets and longer cutting times.
Installation Requirements: Will the Machine Fit?
Installation and Configuration Requirements by Model
Beyond size, these requirements are often what makes the final call
By the Way: They Cut More Than Carbon Fiber
Although the machines are designed for CFRP, the same high-speed, low-feed, dry-cutting setup also works for other composites and engineering plastics:
| Material | Typical use on drones | Machining notes |
|---|---|---|
| CFRP (carbon fiber) | Frame plates, arms, wing ribs, carbon tube clamps | Conductive dust, exit-side delamination |
| GFRP (fiberglass) | Antenna mounts, areas that must be RF-transparent | More abrasive than CFRP; shorter tool life |
| FR4 / G10 | Electronics carrier plates, insulating spacers | Dust is similar to fiberglass; dust collection equally necessary |
| ABS / PMMA / PC | Canopies, camera lens windows, prototype parts | Prone to melting and gumming; lower the spindle speed |
| Thin non-ferrous sheet | Heat sinks, metal reinforcements | Needs different tools and parameters |
| The key point is that parameters don't carry over. The strategy for plastics is almost the opposite of carbon fiber: carbon fiber needs high spindle speed to avoid fiber pull-out, while plastics melt and gum up if the speed is too high. If your work spans several materials, this is a question worth settling when you request a quote. | ||
Scenarios: Which One Are You?
| Scenario | Recommended model | Reason |
|---|---|---|
| 5–7-inch FPV frame development, university clubs, individual workshops | Carbon Lite | The largest parts are about 193–270mm, comfortably within the 240mm short-side limit |
| Materials labs, batch cutting of ASTM standard test coupons | Carbon Lite | The coupon envelope is only 250×36mm; travel is not a constraint at all |
| Frames of 10 inches and up, multirotor center plates, long arm brace plates | Carbon Pro | The 760mm long side handles long parts and multi-part nesting |
| Part sizes vary; mainly contract prototyping | Carbon Pro | Lots of size flexibility while still a desktop installation |
| Loading full standard carbon sheets directly, without pre-cutting | Carbon Pro EX | 650mm usable short side leaves clamping room around a 500×500mm sheet |
| Low-volume production of large multirotor, agricultural spray drone, or fixed-wing structural parts | Carbon Pro EX | Integrated dust collection + 20kg table load capacity, suited to long continuous runs |
If you're torn between the Pro and Pro EX, the deciding factor usually isn't "will I make bigger parts someday?" but "do I want to load whole sheets directly?" The first can be solved by splitting parts into sections; the second cannot. Once sheets have to be pre-cut elsewhere, you add another datum and another source of positioning error, and that extra step follows every batch you run. Conversely, if all your parts are within 450mm, the extra travel on the Pro EX just takes up floor space.
FAQ
Does choosing the Carbon Lite sacrifice machining quality?
No. All three models have ±0.05mm machining accuracy, a 20,000 rpm maximum spindle speed, and a 2500 mm/min cutting speed; all use an ER11 collet with 4mm/6mm shank end mills, and carbon fiber dust protection is standard on all three. The same DXF cut on any of the three comes out at the same quality level. The only differences are size and installation requirements.
How much should I subtract from the working area to get the usable part size?
In practice, allow 20–30mm per side for hold-down clamps, the vacuum seal border, and tool lead-in/lead-out moves. At 30mm per side, the usable area is about 300×240mm on the Lite, about 700×450mm on the Pro, and about 840×650mm on the Pro EX. Square parts are limited by the short side and long parts by the long side, so check the two limits separately.
Can the Carbon Pro take a full 500×500mm standard carbon sheet?
We don't recommend it. The Pro's short side is 510mm, about 450mm after clamping margin, so a full 500×500mm sheet leaves no room for hold-downs. If you want to load whole sheets directly, choose the Pro EX: its 710mm short side leaves about 650mm after margins, with ample room for clamping and toolpaths.
How much space does the Pro EX need?
The Pro EX is a floor-standing machine on its own stand. It weighs 148.9kg, measures about W1012×L1154×H1383.5mm, and runs at 39.6 dB(A) operating noise, <66 dB(A) maximum. When planning, leave room not only for the machine itself but also for moving sheets in and out and for working around it. It is not a machine you set on a workbench.
Do I really need the optional dust collection module for the Lite and Pro?
We strongly recommend it. Under Taiwan's regulations, carbon fiber dust is classified as a Class 4 nuisance dust with a respirable permissible exposure limit of 5 mg/m³, and measurements show that typical trimming conditions exceed the limit right at the cutting source. Carbon dust is also conductive and can get into the spindle and electrical areas, causing cumulative damage. The Pro EX has integrated dust collection as standard; for the Lite and Pro, budget for it as required equipment.
Besides carbon fiber, what else can these three machines cut?
Besides CFRP, they handle GFRP (fiberglass), FR4/G10, ABS, PMMA, PC, and thin non-ferrous sheet. Note that parameters do not carry over: carbon fiber runs at high spindle speed to avoid fiber pull-out, while plastics melt and gum up if the speed is too high. If your work spans several materials, confirm the recommended parameters for each when requesting a quote.
Sources
- Carbon-CNC official spec page: Carbon Lite (Entry-Level) (360×300×80mm, BLDC 200W). https://www.carbon-cnc.com/en/carbon-lite/
- Carbon-CNC official spec page: Carbon Pro (Professional) (510×760×100mm, BLDC 350W). https://www.carbon-cnc.com/en/carbon-pro/
- Carbon-CNC official spec page: Carbon Pro EX (Advanced) (710×900×150mm, 20kg load capacity, 148.9kg, integrated dust collection). https://www.carbon-cnc.com/en/carbon-pro-ex/
- iFlight official frame spec page (5-inch bottom plate 193×144mm; bottom plate sizes for 7–10-inch models). Accessed September 3, 2026. https://shop.iflight.com/Chimera9-ECO-Frame-Kit-Pro2080
- Tarot X6 hexacopter frame specs (960mm wheelbase, 328mm center plate diameter). Accessed September 3, 2026. https://www.flyingtech.co.uk/frames-props-parts-accessories/tarot-x6-960mm-carbon-fibre-foldable-hexacopter-frame
- ASTM D3039 / D5961 standards (250×36mm coupon envelope). Accessed September 3, 2026. https://www.astm.org/d3039_d3039m-17.html
- Ministry of Labor, Taiwan: Permissible Exposure Standards for Workplace Air Contaminants, Schedule 2 (Class 4 nuisance dust: respirable 5 mg/m³, total dust 10 mg/m³). Accessed September 3, 2026. https://laws.mol.gov.tw/Download.ashx?pfid=0000073857
- Miller, J.L. (2014), PhD Dissertation, University of Washington (CFRP trimming dust exceeds limits at the source). Accessed September 3, 2026. https://digital.lib.washington.edu/bitstreams/45daa5b3-cc39-4604-8fee-cbdf674dee64/download
- Strongwell, Safety Data Sheet: FRP with Carbon Fiber (carbon dust is conductive; accumulation may cause electrical shorts). Accessed September 3, 2026. https://www.strongwell.com/wp-content/uploads/2017/04/SDS-FRP_Carbon-fiber.pdf
Not Sure Which One to Choose? Tell Us the Size of Your Largest Part
All three Carbon-CNC models are 100% Made in Taiwan, and we provide technical consulting and technology transfer for composite cutting. Contact us with a DXF or your part dimensions, and we'll match you with the right machine.
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