Hey Jessica,
You can cut wood up to 3 mm and engrave most materials which are not metal. If you need some assistance there is alot more help available at
https://www.facebook.com/groups/107222596696733/
Benboxlaser.us
The discord channel listed at the top of this page.
The biggest thing you will be asked is what software you are using. The most common are T2 laser and lightburn. Also you can check out my youtube channel for some tutorials on starting with T2 laser.
on the main screen, not the laser screen, click settings - laser (Z-Axis Focus)
I've just used black paint. same speeds as you are using.
double print issues are called backlash. You can fix it by making adjustments to your x axis. Adjust belt tension and wheel tension. The belts may need to be tighter or looser. The wheels should roll smoothly. If you raise one end of the machine with it off it should slide to the other side. If it doesnt the wheels are too close to the rail and binding.
uhhh how old? So on the old L7 boards there was a jumper under the nano you needed to move. which board do you have? can you post a picture?
yup painted first. just regular painters tape. I think I used the brown rather than the blue though.
reduce the max power. so if you are using 0-1000 power try 0-500. This will mean that 50% is half of half power or 25% This will give you more bands of grey.
dunno but you can just change your regional settings in windows to America which is all the fix does.
you can use teflon tape or move your work surface closer to the laser so you can change the focus so there are more threads touching and therefore more stable
that would be connecting two ttls. It is redundant and would probably give you weird results. you dont need the blue one or the black one.