Lightobject.com Support Forum

Hello all. I recently received our new machine from China, which is this one:
http://www.itechcnc.com/html/Product_ce ... ne/29.html

Id like to start planning to upgrade this machine, if anyone can recommend what I should start with and what would need to be changed to improve the machine.
The first thing I do know is I hate the software it comes with.. LaserSoft..which I cant even find anyone who uses it,or has heard of it. It doesnt seem to have very much control options when engraving.
I think I could start with the lenses ,and perhaps mirrors?
One thing to note, they sent me everything rigged for European use, even though I requested US. So its rigged at 220V (which is fine) but its 50hz instead of 60hz.
(Itech has repeatedly ignored me about that by the way,and I know theyve received my emails about it,answering questions I made along with the complaint,yet still wont respond about the power specs)

any advice would be appreciated.

Sorry to hear that. I have warned people not to buy CO2 laser machine from "Jinan", a city in Shandong providence where they famous of producing cheap laser machine. It may not be all but the chance of receiving a lower than satisfied machine is quite high.

If they haven't adjusted the frequency to you, chance is that the LPSU may not output as much as it supposed to be. For 50Hz AC power, the internal frequency is higher than the 60Hz.

Before spending money on upgrade, tell us more about the machine you have and what is the problem you're dealing with. Post image of the controller, the software interface, and the machine from inside out. Then, do some testing on cutting/engraving on circles and lines. I'll post a few testing file for you folks to be used to test a machine if there is a mechanic issue.


Marco

Hello Marco, thankyou for the reply. I somewhat expected to get a lesser quality machine from there, you get what you pay for. Though I didnt expect Itech to blatantly ignore me when I had an issue. But,thats out of my control now, they certainly lost a future customer.
anyway, the above link will show the machine ..but heres photos of what I have now..
so far in working with it, it cuts pretty good. I havent had any issues there,other than trying to figure out the correct parameters for acrylic.
Though,I do admit, it doesnt cut 1/4" cast as quick as I expected it to over the 40W FSL I have. But it is a little quicker I guess. It doesnt lose power the further the head gets from the left side like the 40W does.
Engrave however is useless, I can get it to engrave at high power, which basically rasters deep ,about 2mm into the acrylic, but if I try and just etch the surface,its real dotty and doesnt do the whole image. cant seem to fine tune it,even adjusting the parameters in small increments . Im guessing its the optics possibly?
here are the images of the components...cutting .220 extruded

If it is a Reci 80W laser tube, it can cut through 4mm acrylic at around 15mm/s or 10mm/s for 1/4" . It should be much faster than your FSL 40W which hardly to deal with 1/4"acrylic. I guess you can cut it through with 1mm/s, am I right?

Check the focus lens see if it got dirty Clean it with 90% alcohol with very soft cloth. Make sure the cloth is good for lens or you may cause a lot of scratch. Check the quality of the lens and the mirrors. Then, check the beam alignment.

You may perform a full power test without the focus lens. You need to tst it on acrylic. In a distance of 5ft, fire up a date shoot on the acrylic and check how deep it burn and check the burning spot. It should be in round shape

Marco

Shoot me a pictureof of the laser tube. Three is a label stick on the tube with power and expiration date. I am worryingthat the tube may be defective if it is dated back to 6 months ago while Recipe was under reorganization. If it is a "S" series then highly chance is defect.

Post some work on engraving, I want to see how bad it is. Also, post the user parameters. Without these info, we can't help much. Can't just tell things not working without detail information provided


Marco

I can cut 1/4 cast at 5mm/s with this one.. so if I should be able to at 10-15 then sounds like something is wrong. I did take apart the lens to check it, and clean..looks good..though quality, I wouldnt know..unless you mean cracks or scratches ,which there were none.
Im not sure what you mean about the test fire...5 ft? I cant get that distance..and Im not sure what a date shoot is.

Heres a sample of some 1/4 black cast I cut ,which I did it at 10mm/s at 2 passes..certainly a problem with pitting at the bottom of the cut..not sure whats causing that.

and heres the tube label.

also shown are 3 engrave attempts I did, the one in the middle I started a second pass at higher power. Though I cant remember off hand what settings I used. but if you see between the skull eyes, there should be a strip between the eyes ,but it wont engrave that part for some reason.

also attached is the settings.

How fast you ran when doing engraving?
You may want to increase speed to offset over burn


Marco

I tried many different settings on other tests (not shown) started from 100mm and went up to 600mm ,adjusting it be 50mm increments. the only time I could get the full image to engrave was with high power, which isnt good, because it engraves too deep. I also adjusted the power as well, from 20 to around 60 .

Just make a light cutting on paper without cut through I want to see how fine you can cut. Set the lower currently you can

Also, do engrave on a simple square and circlet engraving on paper

You may want to test the linearity of your laser power supply and the laser tube by using a 5Kohm variable resistor

oook..I'll do the paper tests..but the other technical stuff for electricians ...I wouldnt have a clue. Just so you know, your not talking to someone whos an engineer for these things.