50w co2 engraving but not cutting

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Judd Stapleton
Posts: 11
Joined: Tue Feb 23, 2021
Location: Bessemer, Alabama; Jefferson
Country: United States
Nickname: Juddman
Laser Machine Make or Type: China 500 x 300 Ruida DSP
Laser Power: 50W
Laser Bed Size: 20 x 12
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: V8.01.48
Ruida Controller: RDC6442
Windows Version: 10
Accessories: RDC6442S-B Controller, Firmware is RDC-V8.01.65, HMI-V4.50.03
Rotary, CW-3000

Up until today I have only been engraving on my new laser. Today I tried to cut some 3mm birch ply. I set it on 3mm/s and 50% power and it would not cut through it, even after repeated runs. I saw that the amp meter was showing around 3ma during the run. So I increased the power to 85% and got the same results, 3ma. Like I said I have been engraving and have seen the amp meter go as high as 12ma at times so I know it can go higher than 3ma. Any ideas why I am not getting the needed power to cut?
Judd
Dave Vigness
Posts: 526
Joined: Sun Dec 15, 2019
Location: Kansas City - Rural
Country: USA
Nickname: Dave
Laser Machine Make or Type: Chine Red and Black
Laser Power: EF RF2 80W
Laser Bed Size: 20 x 26
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.54
Ruida Controller: RDC6445
Windows Version: 7
Accessories: Power Switch for air assist / exhaust blower, Ma meter with switch for external digital, dual digital temp gauge, LED lights under gantry and and and.

Pics and a list here. https://drive.google.com/drive/folders/ ... sp=sharing

If your current isn't going up, then it's capped somewhere. Either a physical trim pot at the laser PSU, or in the controllers firmware / software.
Judd Stapleton
Posts: 11
Joined: Tue Feb 23, 2021
Location: Bessemer, Alabama; Jefferson
Country: United States
Nickname: Juddman
Laser Machine Make or Type: China 500 x 300 Ruida DSP
Laser Power: 50W
Laser Bed Size: 20 x 12
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: V8.01.48
Ruida Controller: RDC6442
Windows Version: 10
Accessories: RDC6442S-B Controller, Firmware is RDC-V8.01.65, HMI-V4.50.03
Rotary, CW-3000

I looked at the units settings and the laser power is set to 85% max. So, I don't know what a trim pot is but the fact that it has plenty of power while engraving really baffles me. I would think that if it has 12 to 15 ma available for engraving then it would also be there for cutting. But, I don't know enough about these devices. Also the fact that while engraving the power is constantly changing as it moves across the work piece so it is not a constant 12 to 15 ma.
Judd Stapleton
Posts: 11
Joined: Tue Feb 23, 2021
Location: Bessemer, Alabama; Jefferson
Country: United States
Nickname: Juddman
Laser Machine Make or Type: China 500 x 300 Ruida DSP
Laser Power: 50W
Laser Bed Size: 20 x 12
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: V8.01.48
Ruida Controller: RDC6442
Windows Version: 10
Accessories: RDC6442S-B Controller, Firmware is RDC-V8.01.65, HMI-V4.50.03
Rotary, CW-3000

Also, i haven't attempted a firmware upgrade or even checked what firmware it is on right now.
Judd Stapleton
Posts: 11
Joined: Tue Feb 23, 2021
Location: Bessemer, Alabama; Jefferson
Country: United States
Nickname: Juddman
Laser Machine Make or Type: China 500 x 300 Ruida DSP
Laser Power: 50W
Laser Bed Size: 20 x 12
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: V8.01.48
Ruida Controller: RDC6442
Windows Version: 10
Accessories: RDC6442S-B Controller, Firmware is RDC-V8.01.65, HMI-V4.50.03
Rotary, CW-3000

I checked the firmware version and it is V8.01.65. i HAVE NO IDEA IF THAT IS THE LATEST OR OLDEST.
Dave Vigness
Posts: 526
Joined: Sun Dec 15, 2019
Location: Kansas City - Rural
Country: USA
Nickname: Dave
Laser Machine Make or Type: Chine Red and Black
Laser Power: EF RF2 80W
Laser Bed Size: 20 x 26
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.54
Ruida Controller: RDC6445
Windows Version: 7
Accessories: Power Switch for air assist / exhaust blower, Ma meter with switch for external digital, dual digital temp gauge, LED lights under gantry and and and.

Pics and a list here. https://drive.google.com/drive/folders/ ... sp=sharing

You're right up there, .67 is the latest so you should be good. Beware, the V8.00 and the V8.01 are for different controllers. I don't remember what off the top of my head, but I want to say one is for the 6442 and the other is for the 644X. I have them labeled the same on my download page, so I will have to research and correct.

You know, it would help if I read my own notes. One is for the S and the other is for the G. One is a single head, the other can do dual.
Judd Stapleton
Posts: 11
Joined: Tue Feb 23, 2021
Location: Bessemer, Alabama; Jefferson
Country: United States
Nickname: Juddman
Laser Machine Make or Type: China 500 x 300 Ruida DSP
Laser Power: 50W
Laser Bed Size: 20 x 12
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: V8.01.48
Ruida Controller: RDC6442
Windows Version: 10
Accessories: RDC6442S-B Controller, Firmware is RDC-V8.01.65, HMI-V4.50.03
Rotary, CW-3000

Thanks for the info. I'll probably do the firmware upgrade to see if it helps. After looking at your page and seeing all of the pics I realized I know so little about these machines. I don' even know what type or size lens it has.
Thanks again,
Judd
Judd Stapleton
Posts: 11
Joined: Tue Feb 23, 2021
Location: Bessemer, Alabama; Jefferson
Country: United States
Nickname: Juddman
Laser Machine Make or Type: China 500 x 300 Ruida DSP
Laser Power: 50W
Laser Bed Size: 20 x 12
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: V8.01.48
Ruida Controller: RDC6442
Windows Version: 10
Accessories: RDC6442S-B Controller, Firmware is RDC-V8.01.65, HMI-V4.50.03
Rotary, CW-3000

I just finished the firmware upgrade and it is cutting very good now. In fact, I had to stop it and decrease the power. All I have right now is the 1/8" birch but it wouldn't cut it yesterday at 3mm/s at 85% and now I'm cutting it at 7mm/s 30% power.
So, maybe the firmware upg woke it up.
Thanks
Dave Vigness
Posts: 526
Joined: Sun Dec 15, 2019
Location: Kansas City - Rural
Country: USA
Nickname: Dave
Laser Machine Make or Type: Chine Red and Black
Laser Power: EF RF2 80W
Laser Bed Size: 20 x 26
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.54
Ruida Controller: RDC6445
Windows Version: 7
Accessories: Power Switch for air assist / exhaust blower, Ma meter with switch for external digital, dual digital temp gauge, LED lights under gantry and and and.

Pics and a list here. https://drive.google.com/drive/folders/ ... sp=sharing

That, or the firmware upgrade set something back to default.
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