Does anyone know this temperature number? I can't find one in my poorly written manual.
Thanks,
Doug
Does anyone know this temperature number? I can't find one in my poorly written manual.
Thanks,
Doug
700mm x 500mm Ke Hui KH-7050 Laser
80W EFR F2
S&A CW5000 chiller
Chuck style of rotary attachment
Dave Sheldrake (who is extremely knowledgeable on the subject) has said, "Beam profiles change in DC tubes when they get hot, the window to operate a DC tube efficiently with a stable beam is only +/- 1.2 - 2 degrees. On a narrow body tube it should be kept between 20 to 24 degree's (on a wide body, 17 - 21 degree's). Hit 24 on a narrow body and you will start losing tube life exponentially as it goes above that. Temperature stability is absolutely essential in DC tubes."
Longtai 460 with 100 watt EFR, mostly for fun. More power is good!! And a shop with enough wood working tools to make a lot of sawdust. Ex-owner of Shenhui 460-80 and engraving business with 45 watt Epilog Mini18.
What's the difference between narrow and wide body?
Jeff Body
Go-C Graphics
China 50W Laser
Model # SH-350
Controller RDC6442
Vinyl Plotter Graphtec CE600-60
Software used
Inkscape, FlexiStarter, VinylMaster 4, RDWorksV8
x2 on that question!
Thanks.
700mm x 500mm Ke Hui KH-7050 Laser
80W EFR F2
S&A CW5000 chiller
Chuck style of rotary attachment
Narrow = 50mm , 55mm and 60mm diameter tubes,
Widebody = 80mm and 90mm diameter tubes,
The single most important word in DC laser cooling is "stability" keep the temperature nice and stable (+/- 1 degree if possible) and you will get premium life and beam profiles from DC glass tubes. All my chillers are set 17 - 19 degrees C (all widebody tubes)
Low temperature can have benefits but at the cost of other issues like condensation so it pays to stay above 16 degrees if you don't want to run your chiller to an early death.
Avoid thermal shocking by turning on a chiller after the machine is running. Turn on and leave a couple of minutes to get the entire water reservoir volume to a stable even temperature before firing up the laser to work.
Mine run 16 to 18 hour days and an EFR ZX/ZS tube will on average last 5 years (I just changed out a ZX1850 that was Jan 2012 manufacture date when it got down to 130 watts output) the CL1200 60 watt is usually good for 3 to 4 years if you cut a lot but engraving due to the higher stresses involved (lots of on and off cycles per day) will take quite a bit of time off of that.
You did what !
Thanks for the great information.
700mm x 500mm Ke Hui KH-7050 Laser
80W EFR F2
S&A CW5000 chiller
Chuck style of rotary attachment