Diode Laser Air Assist

Hi Community, a question for all;

Hey everyone, I will add this in the suggestion category item. But here is something I would like to see
added for diode lasers using air assist. The other day I had a project that had five layers in it, three
of them where engraves while the last two where cuts. The first three where items that where filled.
I had to watch the machine engraving until it was time to start cutting the parts out and then turn on
the air assist for shape cut outs.

  1. engrave layer one (engrave)
  2. engrave layer two (engrave)
  3. engrave layer three (engrave)
    find a way to stop the machine to turn on air assist
  4. cut layer four (interior hole cuts with air assist)
  5. cut layer five (exterior part shape cut outs with air assist)

Maybe there is a way to put a stop point between the layers to start air assist?

Machines:
Xtool D1 10 watt with honeycomb, Windows 10,
Xtool D1 Pro, 20 watt with honeycomb and extension kit, Windows: 11
Ortur LM2 10 watt (not the pro), Windows 10,
Lightburn: 1.3.01,
,
Thanks,
Tim

Screen Shot 2023-04-19 at 5.46.02 PM
there is an option in the cuts layers window to run air in the selected layer or not.

i do realise that the air assist for the xtools are manual on and off.

i need to know why you cant just run the air assist through the whole job?

1 Like

If it’s manually controlled, you have to run the first three them, turn on your air, then run the next two…

Does the Xtool have some kind of hardware to enable an air assist? There are so many variants I’ve lost track of them…

@berainlb is pretty good with these, I think, maybe he can make a suggestions that would allow it to enable in the cut layer…

There are many times you need higher pressure for cutting, but it’s detrimental to delicate engraving…

It is nice to have this software controlled if possible… I cut at 60psi with mdf…

:smile_cat:

As far as I’m aware xTool air assist is purely manual with no mechanism for air control on the controller but I could very well be wrong.

The easiest thing would likely be to simply run this in two separate jobs by disabling output on the unwanted layers for each job.

2 Likes

xTool does have an air assist option, I think … wonder how it works…?

Thanks…

:smile_cat:

ok thank you! i did not know this.

xtool(D and M series) currently only has a manual on/off switch inline with the power cord for the air pump. so no, i would say it won’t communicate with LB

Some of the controllers do have the ability… sorry this isn’t one of them…

Sounds like you’ll have to settle for run the three layers, enable the air then finish the final two layers…

Layers 4 + 5 could probably be merged, use optimizing to set Lightburn to cut inner shapes first.

Always check out what it’s going to do in the preview… before you run the job.


On the CO2 I use a very low pressure when engraving, just to keep the debris off the lens. When a layer is executed with air assist enabled I get high pressure air…

High pressure air works great with most things… not too slick with acrylic…

:smile_cat:

1 Like

Thanks all for the quick response, I will run it next time in two differen
jobs.

Thanks,
Tim

These kinds of issues are why many people upgrade the controller…

However, if you own a $80 machine, this is unlikely something you’d attempt to do…


Good luck

:smile_cat:

What exactly does the “Air Assist” button do if not to activate the air pump?

Hi.

If the controller (or the system) doesn’t have anything that a command -any command- can activate, most likely nothing.

AFAIK xTool D1 and D1 Pro have both such controllers, unfortunately.
At some point I’ll probably start a thread about swapping the D1 Pro controller for something more versatile, unless someone beats me to it :slight_smile: .

Generally though, some commands can be linked with other commands, for example adjust some parameters according to what’s on and what’s off, so if theres nothing to control, IMO best to leave it off unless one knows exactly what they’re doing.

Think of it as the AC button on a car, the button may be there even though there’s no AC system installed or it doesn’t work.
If there’s no AC compressor etc. or the system is broken somehow, pressing the button or choosing AC from a menu does nothing.
The windshield de-fog for example also works a bit differently with, and without AC.

Regards,
Sam

1 Like

excellent explanation.

:money_mouth_face:

So the question is really how does air assist switch actually work…

A schematic would be nice… or follow the wires… otherwise it’s all speculation if it can even be implemented at all via software.


Watching this video, it’s pretty clear there is a 110V mains plug with no switch in-line and no air assist button was visible or referenced in the video… there are also no solenoids to control air flow…

The only other connections to the pump are the air hose, at least in the video…

If someone has a video of this in operation with the air assist showing the button you’re referencing, I’d like to be educated…

:smile_cat:

i own this unit (xtool D1 pro) and it sure does have an in-line on off switch (rocker style)


currently the only way to control air assist on these models.

That kind of switch is easy … you’ll have to have something toggle on the controllers hardware to make it work from software…

No different than in the video, you have plug it in…

:smile_cat:

could you clarify what you mean. maybe explain or direct me on how i could do this?

Micro controllers are very flexible devices… Excluding power and ground just about any pin can be input, output, adc, pwm and many other combinations.

Those pins and what they are connected to is defined by the board creator.

He can control pins that would be used to run a spindle or turn coolant on and off… air assist on and off…

The hardware has to support this wiring in some way or the other to be useful.


That’s half the issue… firmware has to determine when and how this is controlled or operated… Usually some software, like Lightburn sends specific commands to the controller informing it when the firmware should toggle a certain pin…

Some of these are very flexible, some use non-standard gcode and some don’t have this ability at all…

This is very a very generic explanation…

Make sense?

:smile_cat:

yes makes sense thank you.

my question would be: can the air assist wich is not wired to the controller in any way to talk to lightburn? if i understand properly you are saying there is a way to wire the switch from the inline 110 (plugged into the wall) a way to wire that switch to the controller? (XTOOL D1 Pro 20w)

i promise i am not as smart as you might think.