hey everyone im new to the k40 laser, only had mine for a couple of weekends
what is the thickness of the material which is ready to engrave …
@Dinesh_C_Holla any thickness depending on the speed and amp I’m run at 300 mm and 30 amps
mine is same machine… if we keep 1 inch thick wood…laser beam goes out of focus… thin letters will not looks good… need add a height adjustment mechamism
Welcome to the group @Chris_Parks .
I don’t think it actually is 30 amps Chris. As far as I’m aware, these K40s that come with the digital “ammeter” are actually showing a %, not a mA value. Have a look around the group posts, but if I recall correct, the laser fires at 18mA max (or maybe 18mA is the most you should fire at).
@ Yuusuf yeah, i am very sure its not amps… its a digital meter showing percentage thats it…
I wish my machine had a digital percentage-power display. It would make things so much simpler.
@Richard I’d say you could add a digital ammeter inline with the analog ammeter, however you would need to verify with others here that are more electrically competent than I. I think that you need to make sure the digital ammeter can handle the voltage & is capable of reading the correct range (somewhere between 0-20mA). But you would still have to adjust the power manually with the potentiometer.
I was hoping it would be possible to replace the pot instead of the am, so I have a digital readout of the percentage of power with buttons up/down, which would be constant (the am fluctuates as power is turned on/off). That would be much more precise than attempting to guess where I have the knob turned each time I try to run it.
@Richard I would be less concerned about the digital buttons to up/down the power, as over time the tube gets weaker anyway. If you take a look, someone just posted a voltage meter hack that they added to their K40 (https://plus.google.com/113684285877323403487/posts/M8PX3HvY1YD). As they turn the pot, it tells how much voltage is being given. I am not sure how you would go about a percentage related gauge. There may be some simple existing solution for this that I am unaware of.