First, this machine is made in China by a company called Redsail. They state that they sell in over 40 countries, with more than 10,000 machines sold. They have a wide range of machines, from small desktop laser engraver to big industrial multi-head CNC routers. They also have stone CNC engravers.
This model has a 24" X 36" work area, with 4" Z height.
The spindle is a water cooled variable frequency drive, 2.2KW motor. Top speed is 24,000rpm.
The chuck is standard ER-20 collet. Can take up to 1/2" dia shanks.
The construction of the table frame is cast steel, not pretty to look at but is flat and very rigid.
The Table frame sits on a 3" welded square tubing stand, also very rigid.
The gantry is made with very thick cast aluminium parts.
X and Y ballscrews are 1", Z ballscrew looks like 1/2"
25mm linear bearings and tracks all around.
No detectable backlash anywhere.
Spindle has less than .00025" runout, the limit of my dial gauge.
The electronic is hand held DSP control, separate drivers for the motors, the electronic enclosure is spacious with fan forced ventilation.It is integrated in the base.
The top of the table is covered with T-slot aluminium extrusions, and are very thin walled. They are rigid enough for sign making in wood or plastic, but can't handle precision machining in aluminium.
Also, those extrusions come covered with a "rigid foam" that will compress when you tighten the clamps to hold your work, making it very difficult to maintain the level of the part.
To correct this problem, I removed the foam and will replace it with 4" wide strips of 1/2" Ultra-High Molecular Weight Polyethylene (UHMW), fastened on the extrusions every 4". Then milled flat by the machine. The T-slot extrusion will be made more rigid by the addition of 2" X 1" aluminium structural extrusions on the underside. Will post more pictures later.
