STV CNC SparX 505

With a 5 ft x 5 ft cutting envelope, the STV CNC SparX 505 is the square table for shops that buy 5 ft wide sheet. It is the bolt-together table in the STV CNC range, shipped in crates and assembled on site. The extra foot of width over the smaller square table is what lets a 5 x 10 sheet be cut once across the middle and loaded as two halves, with nothing trimmed off the width.

STV CNC supplies this series as a kit of bolted parts: an open modular frame with leg brace supports, an assembled extruded aluminum gantry, and bolt-on water pans 3 in deep that the owner seals with waterproof silicone. The manual puts assembly at 4 to 5 hours. Once together, the table is rated for 1.5 in steel plate and gives 5.5 in of Z travel on a precision ground ball lead screw. Motion comes from four NEMA stepper motors coupled 1:1, running rack and pinion along linear guides on gantry and table alike. A 3:1 gear reduction system exists as a later upgrade for smoother motion; the base table does not have it.

The table takes up about 7 ft x 7 ft x 5 ft. Its water pan holds about 69 gallons. Because the envelope is as deep as it is wide, a part can be nested in either direction, and remnants from larger jobs elsewhere in the shop usually fit without trimming. What it will not do is take a long part: anything over 5 ft has to be cut in two setups or sent to a longer table.

MyPlasmCNC is the control, and STV CNC itself calls it the basic system for beginners. It is a download that runs on a Windows PC the buyer provides, linked to the control box by USB, and it opens .dxf, .plt and .tap files. Torch height control, a magnetic breakaway, a collision switch and ohmic material sensing come with the base table, so a tip-up or a missed pierce does not have to end in a bent torch. The plasma cutter is bought separately.