robodatech.CNC machines
Roboda L1 Plasma Kit
Rack-and-pinion gantry router kit, 3000 x 1500 x 200 mm, welded steel bed
₹650,000.00 excluding GST
Specification
| Platform | Roboda L1 |
|---|---|
| Head | plasma |
| Operations | plasma_cutting, cutting |
| Materials | Aluminium (Light duty), Steel (Capable), Mild steel (Production); not supported: Wood, Plastic, Acrylic |
| Assembly time | about 27.0 hours |
| Lead time | 30 days |
| MRP incl. 18% GST | Rs 767,000.00 |
What this machine will and will not work
| Wood Not supported | Not supported, and not for a subtle reason. A plasma torch cuts by transferring an electrical arc **through** the workpiece to the work return clamp, so the material has to conduct. Wood does not, so the arc never transfers and there is no cut - what there is instead is a 20 000 K pilot arc playing on a combustible surface with a downdraft plenum underneath drawing the flames into it. Wood belongs on the spindle variant of this platform, which cuts it beautifully. |
|---|---|
| Plastic Not supported | Not supported, for the same physics: plastic is an insulator, so the arc cannot transfer and no cut happens. The pilot arc melts and burns the surface instead, and depending on the polymer that produces anything from acrid smoke to hydrogen chloride. Do not put plastic on this bed, including as a backing sheet or a jig. |
| Acrylic Not supported | Not supported. An insulator, so no arc transfer and no cut - and acrylic ignites readily and burns with a self-sustaining flame that the downdraft plenum will happily draw into a duct full of oily slag dust. Acrylic is the laser variant's material, where it is genuinely excellent. |
| Aluminium Light duty | Light work only, and the reason is the gas rather than the machine. Air plasma will cut aluminium - roughly 6 mm at 1 700 mm/min at 45 A - but air is the wrong gas for it: the oxygen and nitrogen in the air react with the molten aluminium, so the edge comes out heavily dross-laden, oxidised and nitrided, and it **must be ground back before it is welded** or the weld will be porous. Nitrogen or argon-hydrogen assist would fix it and this kit does not supply either. Use it for brackets, blanks, gussets and anything that gets machined or ground afterwards; do not use it for a finished edge or a weld-ready one. |
| Steel Capable | Capable, meaning stainless and alloy steels cut but with an edge that needs dressing. A 45 A arc takes stainless to about 10 mm quality and 12 mm severance, at roughly 1 500 mm/min in 6 mm. With **air** as the plasma gas the cut face is oxidised and nitrogen-enriched, which discolours it and causes weld porosity, so any edge that will be welded has to be ground back 0.5 mm first. Cutting stainless also produces **hexavalent chromium** in the fume, which is a recognised carcinogen - the six-zone downdraft extraction is not optional on stainless and never was. |
| Mild steel Production | The production material and the reason this variant exists. At 45 A on air, working figures are 1.5 mm at 6 000 mm/min, 3 mm at 3 800, 6 mm at 1 800, 10 mm at 900 and **12 mm at 600 mm/min as the quality limit**, with 16 mm as a severance cut that leaves a rough, bevelled edge. Kerf is about 1.6 mm and the cut face carries 1 to 3 degrees of bevel, which is the process and not the machine. Expect about +/- 0.8 mm of profile tolerance on 6 mm plate - the gantry positions to 0.30 mm over 3 m, and the rest is arc physics. Pierce 12 mm plate on the edge of the sheet or with a lead-in wherever possible: a pierce blows molten metal back at the nozzle and it is what wears consumables. **Never cut galvanised steel** - see the safety block. |
Full specification sheet, drawings and what is in the kit
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