Inventables Community Forum

Where is the laser engraving category?

hi jamie,
I’m also new on this forum. I’ve just buy an x-carve 1000 and a 3.8w laser. last night I light up the laser.
I connect control signal from laser driver to 24v dc spindle control from power source (its about 2 pins green connector) and from easel I choose automatic spindle control and 24v dc for spindle type. to start carving you need to give a depth even is not useful for laser engraving.
I’ve not tested yet, but if you give a value for rpm you could control the power for laser. who is older here can confirm. or not. with easel don’t have too much options for laser, but could be enough for some.
how I already said, I’m pretty new and sorry if I give wrong information.
don’t forget to use glasses to protect your eyes, most important.

Hi Lulian, thanks for your reply, I’ve managed to get everything working, but don’t ask me how, I think it was luck.
Still a lot to learn but reading posts on the forum is helping.
Have fun with the Xcarve.

This was done with Mach3 & J-Tech’s PicConvert DAC for modulating a M140 2W 445nm laser diode on Poplar. The PicEngrave Pro 5 settings were A.000 Min & A-.0255 Max, 70IPM, 25% Feed Rate Change and .006 Pixel Resolution at a 45D angle using the Ellipse feature.

The size is 4.75" X 5.75" with 600,229 lines of gcode and it took 1:36:46 in time to engrave.

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Laser engraved on 12"X12"X.125" piece of Birch Ply with our 6W Shapeoko 2 using Larry’s MultiMode grbl 1.0c that can be downloaded from here…

https://discuss.inventables.com/t/xcarve-jtech-grbl-update-bug-fix/28943

The 1,237,164 lines of gcode was generated with PicEngrave Pro 5 and streamed with PicSender. After the engraving was finished, I used the Manual Move menu in PicSender to cut it out with the laser.

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Jeff, do you recommend this update for the folks using the 2.8w laser?

Yes. It resolves the need to use two different versions of grbl for a spindle & laser.

If you have not already, download and install the latest version of PicSender as it will automatically change the grbl settings for both of the Modes when selecting them. Instructions are here for setting it up properly:

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Great! Thanks.

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Laser engraved at 200IPM with a Feed Rate Change of 20%. 1,387,637 lines of gcode streamed with PicSender to Larry’s MultiMode grbl 1.0c.

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Larry’s MultiMode grbl 1.0c will run arc and G00 commands where the J-Tech LaserMode grbl 9g will not. In our testing of both firmware versions with raster files, the feedrate execution accuracy is the same without any dwelling from the S commands.

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For the last two pictures that you posted, how long did it take to burn those images to the material? I’m very interested in getting a laser set up. Thanks in advance!

I can’t remember the exact time, but it was around 1-1/2 to 2 hours. This is the Laser Diode I have.

https://sites.google.com/site/dtrlpf/home/diodes/6w-nubm44-445nm-laser-diode

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Do those performance settings I put into my old jtech grbl need to be manually put into the new 1.0C multimode version .?

GC

Here are the instructions for Larry’s MultMode grbl 1.0c, PicSender & the grbl settings.

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Thank you, Im running a makita , can i assume that this means nothing to the settings and i switch back and forth the same regardless of spindle or makita ?

gc

Just make sure you have the PWM grbl settings $30, $31 & $32 set properly for Spindle use or Laser use and there saved to the corresponding grbl settings file that is either spindle.txt or laser.txt.

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We did a Laser engraving feedrate test with Larry’s MultiMode grbl 1.0c and here is the results.

<img src="//discuss-assets.s3.amazonaws.com/original/3X/2/3/2391716116a3f201a5d5cb6ae7e2b50ea6ffb94c.jpg"width="498"height="500">

The size is 9" X 9" and we used the Extended Edge & Skip White in PicEngrave Pro 5. The image was Dithered Black & White using the Atkinson Algorithm in the image editor & the Max PWM setting is 255 & Min 0 so the laser would just turn on/off. The step over & step ahead distance is .007" and the Feedrate was set at 200IPM, even the Extended Edge. There is 901,805 lines a gcode streamed with PicSender and the run time was 1:10:06 (4206 Sec)

The travel distance of the X&Y axis in the gcode file was reversed engineered to a DXF file and the full length is 13968.822 inches.

13968.822 inches divided by 4206 seconds = 3.321 times 60 = 199.26 IPM. The performance of Larry’s grbl & PicSender when raster Laser engraving photos is as good as it gets and the movement was very smooth.

Good thing we have Kevlar reinforced timing belts on our Shapeoko 2 6W Laser Diode CNC machine. 200IPM and instantly reversing directions sure is jarring. :laughing:

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Hello!

I’m new to x-carve world, as lot of people here :smile:
Also got the laser with my kit, but I have one problem with it - I can’t focus it with low power. It always have so much power, so it burns everything in its way.

In UGS tried commands M03 S01 and others, it turns on, but with max power (i think) and burns as hell.
Turned pot counter clockwise ALL THE WAY (approx 21 turns), like in focusing instructions, but result is the same.
I’m so confused. What I’m doing wrong?

You must be missing a step in the J-Tech’s instructions. Did you switch back to TTL on the driver instead of CW?

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Thanks for suggestion.
Hmm… But I’m stuck in step 5.
“Switch the front switch (mode selector) to CW (towards the power switch). The laser is now on, but will not be lasing because there is no current.”
My laser is on and instead of just showing light it burns like with full power… :frowning:

Switch back to TTL is in step 13.

This statement is why I was wondering if you missed a step. In CW mode, the S commands have no effect with the laser power. It appears you may have turned the potentiometer in the wrong direction.

The best person here to assist you in this process is @JTechPhotonics

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