Benbox Laser Machines/CO2 Lasers/3D Printers

Software => T2 Engraving => Topic started by: baital on February 18, 2017, 03:36:50 AM

Title: grey scale issue (solved)
Post by: baital on February 18, 2017, 03:36:50 AM
Hi, I recently purchase an A5 2.5mW from gearbest. I moved the pin to 0.9V and updated GRBL 1.1c and I'm running T2Laser trial version cause I would like to use the PWM.

I'm trying to engrave a gray scale image but there is a problem with the second-last dark grey which is rendered like a light gray. I used 1000, 2000 and 3000 speeds with min laser power of 100 and a 255 max (under 100 only the darkest grey is cutted, 2 or three at max).
Any suggestions?

Thanks
Title: Re: grey scale issue
Post by: Zax on February 18, 2017, 05:27:41 AM
It sounds like an anomaly with your laser module. You should get better results using dithered or Velocity mode.
Title: Re: grey scale issue
Post by: baital on February 18, 2017, 05:38:32 AM
Thanks for the reply.

The anomaly is that I must start at 100 power or the dark Grey error?
Title: Re: grey scale issue
Post by: Zax on February 18, 2017, 05:48:11 AM
Using the other methods will fix that, in particular Velocity mode is excellent once configured.
Title: Re: grey scale issue
Post by: baital on February 18, 2017, 12:24:50 PM
I tryed velocity mode, but it simply eliminates the gray scale at all... any suggestions on the settings to use?
Title: Re: grey scale issue
Post by: Zax on February 18, 2017, 12:33:15 PM
Did you set the feed rates correctly?

Rapid feed need to be set to a light grey and the standard feed rate to black, then you'll get a nice true grey scale.
Title: Re: grey scale issue
Post by: baital on February 18, 2017, 12:48:44 PM
and how can I set different feed rates? It gives me only one option to set
Title: Re: grey scale issue
Post by: ThothLoki on February 18, 2017, 12:59:52 PM
and how can I set different feed rates? It gives me only one option to set

depending on what version of T2 you are using. Right click and Left click on the feed rate icon and you will get the laser feed rate (left) and rapid feed rate (right).

T2 version "x" has made changes that makes it a lot easier.
Title: Re: grey scale issue
Post by: baital on February 18, 2017, 01:32:20 PM
Ohhh ::) ::) ::) ;D I will never find it alone!

So, if I understood correctly velocity mode keeps the laser power constant and vary the speed, right?
Title: Re: grey scale issue
Post by: Zax on February 18, 2017, 01:43:04 PM
Yes, that's correct.

It takes a little bit more setting up but actually works better in some cases.
Title: Re: grey scale issue
Post by: baital on February 18, 2017, 02:20:23 PM
It works! Just try the sample gray scale and it is just fine to me!  ;D Thanks a lot!
Title: Re: grey scale issue
Post by: Zax on February 18, 2017, 02:53:33 PM
Great to hear.
Title: Re: grey scale issue
Post by: ta1dr on February 19, 2017, 01:03:48 AM
@baital
  could you write your setting ? speed laser power ....
Title: Re: grey scale issue
Post by: baital on February 19, 2017, 03:07:14 AM
I'm using feed rate =700; rapid feed rate =3000; laser power 0-255
Title: Re: grey scale issue
Post by: baital on February 19, 2017, 05:24:34 AM
@Zax
 ;I just brought the program! I wanna engrave something!!!!!
Title: Re: grey scale issue (solved)
Post by: Zax on February 19, 2017, 05:26:22 AM
Thank you, your license key has been sent.
Title: Re: grey scale issue (solved)
Post by: ta1dr on February 19, 2017, 11:54:47 AM
thanks baital;
happy engavings... :)
Title: Re: grey scale issue
Post by: nottingham82 on February 19, 2017, 12:01:55 PM
@Zax
 ;I just brought the program! I wanna engrave something!!!!!

It starts with wanting to engrave something.  Then it turns into a desire to engrave everything!
Title: Re: grey scale issue (solved)
Post by: ggallant571 on February 19, 2017, 01:06:29 PM
And it goes downhill from there!!! I want to etch my initials on welding gloves.
Title: Re: grey scale issue (solved)
Post by: nottingham82 on February 19, 2017, 01:10:51 PM
try to restrain from etching your name into those gloves while wearing them.  Best to take them off first