Good evening! I have a longer ray a5 20w. At my first material test on 3mm basswood I set the minimum speed too low and it burned a giant hole into the test. Second test the only setting I remember changing was the minimum speed from 600mm/m to 700. The machine cut out all the squares of the test with the same setting. I am running out of wood so I tried it with a stainless steel plate. The same results started showing with the lowest speed as the highest speed, so I stopped the engraving. So long story short the material test’s squares(engraver and fill too) get engraved with the same settings over and over. I know I could make all the squares by hand, but I just got my first laser, so making all the tests for different materials would be a lot of time.
This is usually a result of the laser not being capable of the demanded speeds. If the material test is too small, the laser will not reach the desired speed within the short squares, resulting in all squares having the same output. 700 mm/min is rather slow, so this might not be the case here, depending on how big you designed the test.
Be ready to buy another pile of testing wood, that’s how lasering works. For 1 kg of great results, calculate 9 kg of wasted material in the beginning 
Preach! For galvo colour marking, add another zero… (although the project I’m working on may very well fix that!)
Unfortunately, you cannot use the same settings on all the different materials. You will find sometimes different settings are needed between two batches of the same material. The Material Test and stuff you see on the internet are just guidelines. Adjustments might need to be made for your particular material and machine. As @misken says, there will be waste, both material and time. The waste material is a good source of test material.
About that my cubes might be too small. I thought of that but the first time it did it right, I just used too slow settings for 100%, so it got burned, but the other cubes were okay, until I stopped it, becouse the eye watering amount of smoke(currently making the plans for a chamber),so I dont think thats the problem
And I know I cant use the same settings, but to test all the materials I will be working with, I will need like 15 tests, so that would be tens of hours of manually making cubes
Do you mean I would need a 200w laser? I dont think so, I achieved yellow and shades of blue, with not too slow settings.
Not at all. The number of colour marking sample cards I have made to get consistent colours on stainless steel is an order of magnitude higher than that of getting acceptable results in wood. Then there’s the titanium pile…
Wood, paper, leather, rubber (stamps), stainless, aluminum, glass, rocks, and acrylic.
What are the other 6 materials? You do not necessarily have to Material Test everything. You can do a simple circle or square cut or fill on the material to get an idea of whether to go up or down, or in some cases both.
You are right, do you have a suggestion/idea of what should I do? I really wanna test my laser I got for christmas. So now what should I do if I cant material test the normal way? Make each square manully? Unpleasant, but ok if theres nothing else I could do
Without any information on your materials or process, any suggestions would be meaningless. I still have trouble accepting you have 15 different materials to test.
I don’t test everything. I just test whatever I am working on at the time.
Check the edit material settings window within the materials test wizard. With the materials test, you can vary 2 parameters at a time. There are more parameters to vary. Make sure all your actual settings match the desired parameters. In a MOPA laser, you have speed, interval, power, q-pulse, frequency, number of passes. (Arguably, several are reducible to total laser fluence, but that’s another discussion entirely).
Also, post pics of at least your material test window and the edit material settings window.
I remember something about dinamyc power/constant power. *Or that might be Lasergrbl) but I dont know what does that do, could it be the solution?
If the corners do not cut, that is dynamic power. if the corners are burned, that is constant power. LaserGRBL does not support Dynamic power.
Constant power is obvious.
Dynamic power means the power is varied with the travel speed of the laser. When approaching a corner, the laser slows down. This means there will be more burning in that area. To prevent this, dynamic power was developed for GRBL.
However, if the laser never reaches the commanded speed, the laser will not be sent the commanded power value. So… tiny squares in the Material Test may not truly represent what will happen on larger projects.
In that Material Test image, you have way too much power, even in the text lettering. It appears you used Line Mode for the test. There is no question about focus.
I have not played with my 20w machine, but I suggest you limit your power range to say 5% to 25% ( or use thicker wood) to see if you get some non-cut areas.
Looks like the power or speed isn’t regulating properly. Try making 2 squares. One at 700mm/min, and one at something absurd, like 10000. Similarly, with power one at 1%, one at 100%. Should help to eliminate some possibilities.