I thought it was pretty common knowledge not to go over 40% on these? At least I've seen it mentioned on nearly every forum post of people asking about power settings.
@8mmmauser896
Жыл бұрын
Can you please show us what grbl settings you have for the k40
@jaison7828
2 жыл бұрын
Thanks for giving us an insight… I’ll try not to use it beyond its rated … nice to know such thing and see how long the tube will last… maybe they meant us to run it at 80-100% to shorten the tube life span so we buy tube again- it’s a business after all…
@RCSORIA
3 жыл бұрын
Hey i like tour machine please the URL if mirror suport for the sur assistent chain i want a new one for my machine and i dont found It thx!!
i just got my laser had it for a week, you likely just saved my laser. time to slow down the raster and vector engrave speeds and set power under 40.
@Photonsnmotion
3 жыл бұрын
Like industrial lasers they will start off hot (small laser of 400 watts will be around 530 watts at 50 or 60% duty cycle based on the wavelength) and as time goes on they will drop. You are correct in stating running them hot is not good, you only need so much energy to do a cut so way crank them up if you don't need to .
@ihyphenrot
3 жыл бұрын
hi steve! I have the exact looking machine but wih 35% I get 15mA . Also do you think is it dangerous to do rastering more than 15mA ? Thanks!
@americanphotonics9120
3 жыл бұрын
yes
@barryfriesen8062
3 жыл бұрын
So, I just bought a K40 type machine with upgraded power supply and tube (both 50w), I don't have the fancy meters but will be installing an ammeter. If the stated mA range is 18-20, what would you suggest I run it at max? Thank you.
@americanphotonics9120
3 жыл бұрын
make test cuts at different powers. at some point increasing the power will not cut better. my 40 watt tube is new and can produce 46-47watts. but to preserve my tube I don't want to go over 36-37watts (90% rated power)
@Caetano.Galli.Gonzalez
4 жыл бұрын
thank you!
@Tuffenough4u
4 жыл бұрын
Very interesting. Everything ive read about them has always claimed to get less than their advertized wattage, but your data shows otherwise. What is the frequency of the pwm output?
@americanphotonics9120
4 жыл бұрын
What do you mean "pwm output". My building is 120vac 60hz
@Tuffenough4u
4 жыл бұрын
@@americanphotonics9120 Pulse width modulation. It's my understanding that this is how Glass tube Co2 PSUs deliver power to the tube. @ roughly 20k hz.
@americanphotonics9120
4 жыл бұрын
@@Tuffenough4u interesting. I have had several people tell me it is KV not Khz. I really don't know, and I dont have a good way to test it
@djohnson16mindspring
4 жыл бұрын
@@americanphotonics9120 The standard K40 controller boards are too dumb to do PWM. Controller upgrades like the Cohesion board and GRBL-based boards allow PWM, and that's a big reason why people upgrade. The Lightburn software that can run with those upgraded controllers uses PWM to control laser power. In this test, I think, there is no PWM, the laser is just ON.
@americanphotonics9120
4 жыл бұрын
@@djohnson16mindspring I set the % to 5% and I get 3 watts and then I set it to 30 % and get 40 watts. What is the machine varying to get the different power.
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