Text Ghosting on Fill

Quote from Christopher Brace on August 28, 2021, 5:43 amHi!
I got my Mini gerbil running on my k40 today and I have been trying to dial it in. I downloaded a material test card to give the PWM power changing a good run. That worked fine but oddly the text which was set to 300mm/sec 20% Fill did a strange ghosting thing.
I've included a picture. Does anyone know what may be the fix for it?
Thanks!
Hi!
I got my Mini gerbil running on my k40 today and I have been trying to dial it in. I downloaded a material test card to give the PWM power changing a good run. That worked fine but oddly the text which was set to 300mm/sec 20% Fill did a strange ghosting thing.
I've included a picture. Does anyone know what may be the fix for it?
Thanks!
Uploaded files:
Quote from dancolwp1974 on August 29, 2021, 10:55 amHi Christopher,
regarding speed in general, just wondering if you've read this blog? https://awesome.tech/quality-photo-engraving/
Would be good to test at say 100mm/sec and confirm that it is a speed related issue.
Cheers
Dan
Hi Christopher,
regarding speed in general, just wondering if you've read this blog? https://awesome.tech/quality-photo-engraving/
Would be good to test at say 100mm/sec and confirm that it is a speed related issue.
Cheers
Dan

Quote from Christopher Brace on August 30, 2021, 5:28 amHi, Thanks for the reply. I got it sorted in the end, the speed didn't make a difference until it got down to about 50mm/sec however I did while cleaning and oiling find the y is driven by 2 belts which I didn't realise somehow and that 2nd belt was loose so I tightened it up and the engrave is miles better.
Thanks for the suggestions and the blog, I will give that a read, I've not got around the tackling the photo engraving setting yet, most of my work is on leather so is mostly line and fill work.
I do have a slightly odd "Wiggle" in my line work that only happens when my machine is traveling in both x and Y diagonally towards the front right of the machine if you have any insight into that? Ive attached a picture and you can see the issues in the red boxes.
Thanks, Topher
Hi, Thanks for the reply. I got it sorted in the end, the speed didn't make a difference until it got down to about 50mm/sec however I did while cleaning and oiling find the y is driven by 2 belts which I didn't realise somehow and that 2nd belt was loose so I tightened it up and the engrave is miles better.
Thanks for the suggestions and the blog, I will give that a read, I've not got around the tackling the photo engraving setting yet, most of my work is on leather so is mostly line and fill work.
I do have a slightly odd "Wiggle" in my line work that only happens when my machine is traveling in both x and Y diagonally towards the front right of the machine if you have any insight into that? Ive attached a picture and you can see the issues in the red boxes.
Thanks, Topher
Uploaded files:
Quote from dancolwp1974 on August 30, 2021, 11:32 amThanks for the update Topher.
Here's some ideas:
If belt-related
- you could test other speeds in the same area, to determine if it's a dynamic issue. For example, maybe your rail(s) is/are slightly warped in the relevant area and a fast-moving gantry has momentum that sends it away from the rail(s), that shows as a wiggle.
- If it happens regardless of speed, could it be a flat spot on the drive belt. Changing belt tension could help?
If non-belt related - am wondering if it could graphics related - there's quite a few layers of graphics processing (image, Lightburn and controller). You could start to debug this by trying a different resolution and/or rotating the relevant image (with the defect item appearing on the same spot).
Will be very interesting to see what you find.
Cheers
Dan
Thanks for the update Topher.
Here's some ideas:
If belt-related
- you could test other speeds in the same area, to determine if it's a dynamic issue. For example, maybe your rail(s) is/are slightly warped in the relevant area and a fast-moving gantry has momentum that sends it away from the rail(s), that shows as a wiggle.
- If it happens regardless of speed, could it be a flat spot on the drive belt. Changing belt tension could help?
If non-belt related - am wondering if it could graphics related - there's quite a few layers of graphics processing (image, Lightburn and controller). You could start to debug this by trying a different resolution and/or rotating the relevant image (with the defect item appearing on the same spot).
Will be very interesting to see what you find.
Cheers
Dan