Hi there, I have a Neje 40w (15 output) on a 1x1m Cnc board which was custom made for me.
I am currently cutting and engraving my wifes leather products.
The challenge I am faced with is that specific letters have specific issues on them which do not appear on screen. No matter if I engrave on a different spot on the board. Always specific letter that has an issue. Makes me think its the font or image itself? Or lightburn?
See the images, the l in Dlamini always has a small dent in it close to the top. Also some names it is like it Bolds the last 4 letters. Every time. Doesnt change.
Any advice would be appreciated so much as I am running out of time to engrave an order of 116 wallets, mousepads, deskpads etc.
Do you have āoverscanningā enabled in your fill layer? If not, thatās likely the cause.
The ādentā in the 2nd letter above corresponds precisely to where the gaps in the iās are:
If the laser is starting right at the edge there, itās probably not firing hot enough while accelerating. If you add a bit of overscan, it gives the laser time to speed up before firing, and will likely solve the problem (notice the red āmovementā lines shown):
The āboldingā of the letters could be misaligned scans. If you turn off āBi-directionalā engraving and the bolding effect is gone, you likely have something a bit loose in the machine.
When using the Fill setting I do not have the option on my Lightburn to enable or disable Bi directional Scanning. However, I have gone over the whole machine, which is a month old by the way, fairly new. nothing is loose.
I have set the overscanning up to 4.5% and it seems to have minimized the effect on the L.
However the bolding of the last letters in the names do not go away. Any other advice ?
By the way, I have tried offset fill, which completely solves both issues, but with offset fill there is a line in the middle of the letters, so thats not a solution sadly.
The machine being brand new is actually a strong argument for there being something off still, since you self assemble it - Itās very common for self assembled machines to have a few issues to work out before theyāre solid. āLooseā isnāt quite the right word, but if the belts arenāt correctly tensioned it will cause the effect youāre seeing.
If you donāt have the option to turn off bi-directional, youāre likely in āBeginner Modeā, which you can disable in the main settings.
Hi Oz apologies for the long time to reply. Doing multiple jobs.
I have switched off beginners mode. I have bi directional scanning off but the bolding/doubling effect is still there.
I was wondering if the turnaround speed or something is too fast? to make the machine maybe sometimes lose a step when stopping and reversing its direction very quickly? To me the machine stops quite quickly when reversing its direction.
Ok so if I slow down the speed, the smaller text at the bottom of the logos are now perfect, no doubling or ghosting. but the Big Logo part has a piece that is a few lines, being off to the left. I will post a picture
