Need a good table top scrolling CNC!

[Frank Neuperger]

I am helping Falcon robotics through the machine selection process.

Can the owners of both the velox and the Laguna, share with us the "typical" repeatability and accuracy that you have been able to get from your machines. i.e. have you put a dial indicator on the machine and tried to return to a point with each axis? How close can you get when you return?

Is anyone making aluminum transmission side plates with their CNC router. what kind of bearing hole diameter tolerance are you holding? How about center to center hole tolerances over say a 3" to 6" span.

What is the linear bearing rail diameter on both Laguna and velox on X and Y axis. This could help rationalize machine stiffness questions.

The 2 x 3 Laguna at 425 lbs with ball screws and water cooled spindle claims 0.002" repeatability.

The 4 x 4 Velox at 300 lbs with lead screws and router head claims 0.001" repeatability.

Would you not expect the repeatability to be better on the Laguna?

Velox will not share typical repeatability test results. I have not asked Laguna yet for repeatability data.

Also found out that Velox uses 2 NEMA 34 950 oz-in steppers for lower axis (Y) and single NEMA 34 on X axis. Velox uses 400 oz-in NEMA 23 on z axis.

Laguna uses single NEMA 23 on each of the 3 axis.

So Velox seems better on the motor torque and resultant effective stiffness in the drive train. Laguna has more mass and possibly structural stiffness. Why is the Velox repeatabilty claim twice as good.

Looking forward to data from anyone that has tested their machine.