Red and black 80W, Win7, RuiDA 6442G, LB 0.9.07, rotary attachment.
Was burning some PC Stainless mugs can’t figure out what is happening.
The image was done in two layers however both are set up the same. The first pass was fine. The second pass was fine on the first layer (logo) but the second layer (text) shifted about 10mm to the right.
I am starting from user origin and the job origin is center. Each pass was sent from LB software.
I’m going to guess excessive acceleration while moving to the new location between passes, causing either the cup to slip on the rollers or the steppers to lose steps. Try turning down the idle acceleration and see if that helps.
I think when engraving, if you do successive engraving on the same layer, or multiple passes, the system uses the line-shift speed to move between layers, and when cutting, it uses the idle speed. This means it’s likely that the 2nd pass of the logo “rewound” at a lower speed.
If you drop the Idle Speed to match the Line Shift speed (when you’re doing rotary work) it should prevent the slip.
Using the keypad arrows moves the axis much faster than Idle speed and indeed my rotary is losing steps when using the keypad. Can you set max keypad speed? I see jump off speed and acceleration but no max speed. Does it use max axis speed?
Back to the original problem of the item slipping in the rotary attachment.
It seems to be the fast jog, like at the beginning and end of the frame command, when it moves from the origin to the beginning of the cut and then back again after the cut. Changing the idle speed/acceleration has no effect on these two jogs. Only changing the Y-axis speed seems to make a difference. Does this sound correct?
Since the motors and driver settings are so much different between the gantry and rotary attachment, it would be nice to pass all the tuning parameters with the rotary setup. Not sure what rules you are talking about, but it is only a couple of more settings. Just changing the max speed would probably be enough. Keep considering it for a future release. Thanks.
The controller itself has a switch to enable rotary mode or not. If you flip over to RDWorks and turn off rotary mode there, it wouldn’t un-set all the settings changes that were done in LightBurn. People do jump back & forth, so I have to be conscious of that, that’s all. I could make a couple buttons for ‘Normal’ and ‘Rotary’, with some adjustments you can make there, like a stripped down version of the main settings, and have them applied automatically when you switch, but also have the buttons available for you to just press to send those settings, in case you need to. I’ll let it percolate a bit - it’s not a bad idea, I just have to make sure it’s done right.