Hi,
I just upgraded by K40 with cohesion board and I am really struggling to get rasters or cuts out of it after trying a full day and half on it. The results I get are full black blobs covering the perimeter of the image and sometimes even bigger. I am using inkscape to export svg and png and have latest version of LW4 on a Windows 7 machine.
Pls could someone advice how do I fix it.
Cheers
Naveen
hi @Naveen_Chandra_Dudar start by posting pictures of the outcome and also detail the speed/power used
Hi @Ariel_Yahni_UniKpty ,
Pls see below a few pictures I have taken of the issue I am facing. The one below is picture of the rastered file and one the one on the next post is actual laser rastering on the wood.
This is the SVG file I created from an image. I also created JPG image from it and a PNG to try and rater or raster fill (for SVG) but I get the same result.
Here is the link to the drive with Machine profile and settings https://drive.google.com/drive/folders/0B_4pPTqur0JsYU9SdWR4Y1kxSHc?usp=sharing
@Naveen_Chandra_Dudar have you ever had success after conversion? Please do the following : draw a square with a 2mm border but white inside. It could be 3cm. Setup the operation the same as above and post the image. It’s important that you try 2 times , first leave burn white on and then turn it off and try again
Do you know I suspect PWM is not working for you thus full black
Could you pls point me to any thread or information to see how to check if PWM is working or not.
With the above test you will find out. White section should not be burned. Another test could be a to do a grayscale image.
Hi Ariel, I used your grayscale palette and all I got was a rectangle of flat black just like I was getting before with my designs. I used both options you suggested. Would you pls let me know how do I check if PWM is working or not.
@Naveen_Chandra_Dudar Lets tag @raykholo from Cohesion so he can help you troubleshoot this.
Thanks Ray, I’ll try these instructions out tomorrow. Cheers Ariel.
Hi + Ray Kholodovsky, I ran the test as suggested on Troubleshooting page and the laser did not fire on any of the steps. Secondly, on the G0 X0 Y15 command, the laser head moved to the Bottom left hand corner of the machine. Thirdly, I Opened the Config file on the card and found the laser_module_pwm_period 20. The instructions speaks of this value to be in '00 (300 or 400) but here I see it to be 20. Shall I try increasing it to 200 and see if it works?
Oh, 20 was from the original batch of boards.
200 and 400 - try those.
You have to use G1 for the laser to fire
