Fill lines are not straight

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Daniela Dvornicka
Posts: 3
Joined: Fri Apr 14, 2023 11:38 am
Location: Prague
Country: Czechia
Nickname: Usernametaken
Laser Machine Make or Type: Chinanoname
Laser Power: ie 60W
Laser Bed Size: 60 x 40 cm
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: v8.01.54
Ruida Controller: RDC6445
Windows Version: 10

There is something wrong with my laser and I couldn't find what. I need help by the pros here :)

So I learned that when I engrave glass it's better to tild the object in 30-45 dergeer on the laser board (also in Light burn) and then do it - it was always better than when I did it straight (the cracks were more "precise"?) How ever, we moved the laser on different table and this happend (pictures) - the line wśtarted to be wobbly, but the text was okay. Also sometimes it made the fill less conflated and was visibly lines (also can be seen in the pictures)..

I already checked the lens, the shoulder belt, the board if it's not moving.. all good.

Any ideas?

Thank you in advance for your help!
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Gene Uselman
Posts: 2161
Joined: Thu Jul 07, 2016 3:18 pm
Location: Suburban Minneapolis, Minnesota, US
Country: USA
Nickname: Gene
Laser Machine Make or Type: QC
Laser Power: 130W
Laser Bed Size: 900x1300
Home Position: TR
Control Software: LIGHTBURN
RDWorks Version: RDw .19 & Lightburn
LightBurn Version: Latest
Ruida Controller: RDC6442
Windows Version: Win 10 Pro
Accessories: I have a combining lenses, pin tables [homebuilt], honeycomb tables , wireless remote, Modifed Ultimate Air Assist, home built non-powered rotary device, PrusaMK4 and Mini Prusa printers.

Did you change the scan angle in the fill info in Lightburn? If so change it back and see if that makes it better. I 'think' there is an adjustment to make the ends of the lines align better?
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Daniela Dvornicka
Posts: 3
Joined: Fri Apr 14, 2023 11:38 am
Location: Prague
Country: Czechia
Nickname: Usernametaken
Laser Machine Make or Type: Chinanoname
Laser Power: ie 60W
Laser Bed Size: 60 x 40 cm
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: v8.01.54
Ruida Controller: RDC6445
Windows Version: 10

Gene Uselman wrote: Wed Aug 23, 2023 12:34 pm Did you change the scan angle in the fill info in Lightburn? If so change it back and see if that makes it better. I 'think' there is an adjustment to make the ends of the lines align better?
No I haven't. I just "tilted" the drawing in the same angle as the engraved object - the fill angle remained the same. I'll check the settings :) but I am not sure if its problem with light burn or with the laser.
Jeffrey Aley
Posts: 388
Joined: Fri Aug 11, 2017 1:08 am
Location: Folsom, California
Country: United States
Laser Machine Make or Type: Kehui
Laser Power: 50W
Laser Bed Size: 500mmx300mm
Home Position: TL
RDWorks Version: 8.01.24
Ruida Controller: RDC6442
Windows Version: Win10 Enterprise
Accessories: Spray bottle with water (for small fires)
Fire extinguisher (for big fires)

Is the new table wobbly? Rastering the lines will cause the laser to oscillate at a different frequency than rastering the text. Perhaps you've hit a resonant frequency of the new table. If it's not too heavy, try putting the laser on the floor to see if the problem goes away.

Regards,

-Jeff
Daniela Dvornicka
Posts: 3
Joined: Fri Apr 14, 2023 11:38 am
Location: Prague
Country: Czechia
Nickname: Usernametaken
Laser Machine Make or Type: Chinanoname
Laser Power: ie 60W
Laser Bed Size: 60 x 40 cm
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: v8.01.54
Ruida Controller: RDC6445
Windows Version: 10

Jeffrey Aley wrote: Wed Aug 23, 2023 9:27 pm Is the new table wobbly? Rastering the lines will cause the laser to oscillate at a different frequency than rastering the text. Perhaps you've hit a resonant frequency of the new table. If it's not too heavy, try putting the laser on the floor to see if the problem goes away.

Regards,

-Jeff
Thank you, I'll try it (but it's quite heavy so I'll have to wait for help) :) .. the table does not seem wobbly, however the problem started then, so it's possible.
Other than that is there anything I could try/might be the problem?
Pete Cyr
Posts: 1964
Joined: Sun Nov 27, 2016 5:16 pm
Location: Suffolk Virginia
Country: United States
Laser Machine Make or Type: Boss 1630
Laser Power: 100w
Laser Bed Size: 16"x30"
Home Position: TR
Control Software: RDWORKS
RDWorks Version: v8.01.18
Ruida Controller: RDC6442
Windows Version: Win 10
Accessories: roller rotary attachment

Are you sure the lens is secure in the mount.
You can evaluate the table by grabbing a corner and trying to rock a bit - if you can make it oscillate then that is probably the issue - if see what has to be stiffened
Location - VA
Equipment - Boss Laser 1630
Power - 100W
Laser Bed Size - 16" x 30"
Home Position - TR
Full RDWorks Version - v8.01.18
First name - Pete
Jeffrey Aley
Posts: 388
Joined: Fri Aug 11, 2017 1:08 am
Location: Folsom, California
Country: United States
Laser Machine Make or Type: Kehui
Laser Power: 50W
Laser Bed Size: 500mmx300mm
Home Position: TL
RDWorks Version: 8.01.24
Ruida Controller: RDC6442
Windows Version: Win10 Enterprise
Accessories: Spray bottle with water (for small fires)
Fire extinguisher (for big fires)

Daniela Dvornicka wrote: Mon Sep 11, 2023 5:12 am
Jeffrey Aley wrote: Wed Aug 23, 2023 9:27 pm Is the new table wobbly? Rastering the lines will cause the laser to oscillate at a different frequency than rastering the text. Perhaps you've hit a resonant frequency of the new table. If it's not too heavy, try putting the laser on the floor to see if the problem goes away.

Regards,

-Jeff
Thank you, I'll try it (but it's quite heavy so I'll have to wait for help) :) .. the table does not seem wobbly, however the problem started then, so it's possible.
Other than that is there anything I could try/might be the problem?
You said you already checked the lens to see if it is loose; check also the mirrors to ensure they are not loose or wobbly. Is the platform (the laser bed) wobbly?

Regards,

-Jeff
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