So this is giving me fits.

CAD & CAM Tool Chain LaserWeb/CNCWeb Suppport
1

So this is giving me fits.

The silhouette on the left of this engraving is a solid black “clipart” type image. There is no shading at all.

When I burn it, I’m getting fade on the left and right of the burn. It does fine with short burns like the the lightning bolt, but when it does prolonged burns I get a sharp outline then fade in, then fade out then a sharp outline again.

I’m burning at 600/600 @ 20% so I don’t burn through this paper thin veneer. Anything slower and it burns through and anything lighter and I don’t get much of a mark (@raykholo I need to touch base with you on the 3.3v thing again)

Thoughts?

The PNG is attached. It’s 300dpi since I forgot to change it after doing some small text engraving.

3082036eb5739f47cc3d87a674054f38.png
3082036eb5739f47cc3d87a674054f38.png2078×663 42 KB

527b5e980e8a31d101802dcc16fb3bc0.jpeg
527b5e980e8a31d101802dcc16fb3bc0.jpeg960×912 82.9 KB

3e6131941671ac9ce0f166df843383de.jpeg
3e6131941671ac9ce0f166df843383de.jpeg960×540 38 KB

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I’m not able to lower on the power by the way. We’re having problems ironing out a few kinks with the Cohesion3D board I’m using. Anything below 20 just doesn’t burn.

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First of all “I love your work”

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I beleive 600 is to fast for that power specially if you are not getting something bellow 20. I feel you are getting a darker on the narrower bolt as heat is concentrated in a tighter space.

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@Ariel_Yahni_UniKpty Thanks for the kudos on the work. As for the speed, I bumped it to 600 because I couldn’t get a lower power. I guess we still have some work to do on this board configuration. I really need to get down to about the 10% range and drop it down to around 400 if I can but even that might be cutting it close. this veneer is pretty thin. Think card stock paper thickness.

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I get you. I’m playing with same type of veneer I got lately. You need to get the power can you post your config somewhere to have a look?

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Keep me posted.

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FWIW I noticed that when I import PNG into LW3 it dithers the edges of otherwise perfectly white black transitions. Looking at the PNG in gimp I see no dithering. I think it maybe a function of the PNG import library (not specifically LW3).

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Interesting. I have the SVG but then it wants to vector engrave it which isn’t what I want in this case. I guess I could try a different export format

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Do bmp or jpg

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I think I saw it too with JPG. I have not tried BMP.

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BTW you can see it in the imported preview image and the generated gcode.

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@Carl_Fisher ​ can you supply an actual link to the image I would love to try it out. Social media image uploads tend to downgrade images for performance reasons

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+Peter van der Walt​ is posted with it… took me a minute to see that he uploaded 3 pictures… the source is just really wide not showing the other 2 images

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I’m hoping he will post the original source file… not sure how Google + alters images when you post them on here… I know Facebook will butcher the heck out of a photo

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I’ll post the original svg later today. Painting rooms right now to knock some stuff off my honey do list.

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Will do later. Need to be in front of the config first.

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Let’s see if this works. Here is the original SVG https://www.dropbox.com/sh/xb4q0hrcfh1m176/AACawyLWz27wu_s6IGdPD3AGa?dl=0

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I put my config in the same file. keep in mid we’re doing something a bit different with the fire pin

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I answered the tickle power in the other thread. There wasn’t a setting for it in my config. I have since put one in and set it to 0.0 per the k40 guide

resolution on that particular burn was 300. I had it set there from doing some small text engraving and forgot to set it back to 90 (Inkscape)

acceleration is set to the default 3000