Search:

I went through a similar z-shift down issue over the winter(with a Laguna Swift). After checking alignment multiple times (no issues), checking Gcode (no issues) and running the jobs multiple times,...

I think you might be pushing in the wrong direction - my math is that for plywood, your chip-load target is in the 0.025 - 0.027" range. Assuming a 2-flute 1/2 bit and 137/minute feed rate, I'd run...

I recently had a similar problem on multi-pass clearing paths in which had errant Z-axis step-downs.

To make a very long story short - the issue was resolved by a firmware update. Along the way,...

The issue was resolved with a firmware update.

The firmware version was q13-1213. Laguna sent the most recent firmware q13-1292.

I ran the two test jobs this weekend and both ran as...

Many many many years I ago I was an amateur coder, buffer overruns were common and that's what's popped into my head on this problem yesterday, but we're a long way from the KIM-1 and I would think...

Yes, the speeds are confusing - I mis-clicked on that drop box at some point but have fixed it and it's not solved the step-down problem.

Moving on...

I loaded and ran the .mmg file in...

VCarve’s preview looks like a simulation but I don’t think it actually tracks the g-code for the machine itself. For the multi-pass path, the simulation and the actual tool movement aren’t the same....

Also, I've been watching the path carefully and there really isn't any rapid direction change when the spindle suddenly dives about 1.5mm - its rastering along the X-axis smoothly with not a whole...

The new position is maintained.

I've replicated this five times now; same step error in the tool path at the same coordinate position relative to the work-piece itself, not the table.

As part...

To be clear, the error replicates in the same X-Y-Z location on each trial model, not the same X-Y-Z location on the machine bed. If I didn't know anything else, I'd think software error in the tool...

I've discovered that the step-losses are occurring in exactly the same locations on the pass: I ran the first roughing pass and stopped the process on trial #1. Put in a new blank. Ran the pass again...

This issue remains unresolved. I applied Laguna's advice and lubricated the ball screw manually at the bearing nut during the course of a short tool path. No change in the failure case – the spindle...

If manually lubricating the ball screw at the bearing nut solves the problem then I’ll need to figure out why the bearing pack is starved for lubricant. It does not seek to me that should be...

I think you're basically correct.

Per Laguna, it's likely to be a lubrication issue at the ball screw bearing set owing to the relatively short up/down Z-travel on this job - probably less that...

Seems to occur only on longer duration tool paths, 2+ hours.

Also, I recently refreshed my lube reservoir with 10W-30 oil based on incorrect information and have since learned that SAE 30 is the...

I've run into an issue with the Laguna Swift and Richauto controller shifting the Z-Zero downwards mid-process.

457334


The toolpath is a 3-pass roughing raster running top-to-bottom, stepping...