Engraving ~3mm window glass with cheap 40W made in China CO2 laser. Cutting is not optimal, it is only first test. No need to use so many passes, as cut line is quite deep. I'll test in curves mode next time.
Excellent beginning and results. Caution maximum mA value for 40W laser tube should not exceed approximately 12 mA. Greater settings will over-drive the laser tube and deplete the tube CO2, shortening useful life DRAMATICALLY. Perhaps even to months. Also saw dramatic glass etching improvement when, commercially available, glass etching mask film used to cover glass. Just passing on techniques learned on you-tube. Recommend, to all, reworks learning lab video series with Russ Sadler. Enjoy and stay safe, i.e. use protective eyeglasses when cover is open. ron
Very interesting. We do warm glass at my wife's studio and cut by hand or with a diamond saw. I'll have to try this as a technique (I have a laser engraver but have not tried it with glass)
@@realotobi I have not. I don't actually use the laser cutter that often. I have a bunch of upgrades I'd like to perform but have been spending most of my time with 3d printing.
Dear Lord, add a micro-switch to shut the laser off when you open the door. Even reflections off these things can blind permanently and instantaneously. Imagine the guilt you'd feel if someone you loved opened the thing up w/o protective glasses and caught a blinding reflection.
You opened the interlock to a 40 watt infra-red laser and the machine did NOT cut out? =O I thought that power could blind - even just off the specular reflection.
I have one of these chinese k40 40 watt lasers and can say that they do not have a shutoff on the lid. also the red acrylic window is just for looks, mine has a clear window in it.
Interesting to hear that about the red lid. Though the lid hopefully would offer a little protection as the acrylic is UV absorbent (hence why the laser can cut it). I can confirm that these lasers have no interlock and also no protection for if the cooling water flow is not good. I have purchased parts to address both of these but am just being careful in the meantime.
Not true at all. Some wavelengths your blink reflex wont respond. I punched a hole in my retina with an infrared laser that threw a reflection off of a piece of material. No cure for it either.
hey,savel, did the software for the CNC come with it and if it did what brand? I have "benbox" and "mini laser" software. the benbox doesn't work at all with the laser and the mini laser software is very limited.
+Alessandro Zupo spot size depends on optics. Adjust height of the "table" to get minimal spot. Also, glass shatters on in own size. Need to vary power and speed.
Yes i know, i did buy a 38.1 mm focus for have a smaller spot then 50.8 original lens..... but the result is the same. If you have high quality image in zoom of the glass engraver i would like to see. Maybe we can exchagne some information. In Facebouk group "facebook.com/groups/888394261237059/" call "chinese K40 Laser Group" you will see my photo and video of my glass engraver.
man as much as i hate to divulge techniques .......if u intend on engraving on glass my friend.....for a clean one you best to put black permanent marker on the glass n polish it off after
+lunar3660000 Cutting the plastics or similar materials with laser can be tricky and troublesome. I tried cutting acrylic glass with 80W laser and, due to temperature, the egdes started melting. Also, they had cone shape (the part closer to the laser head was wider than the other side).
( ͡° ͜ʖ ͡°) either it was very thick plastic, or your laser is not giving 80W optic power. My laser was quite weak at first start, but the problem was with laser beam alignment. To fix it, I just needed to get some masking tape, screwdriver and some youtube. :)
Well, 40W should be enough for the engraving. But 40W is really small power, especially with these Chinese optics, so there is a chance that the effects of it would be not very rewarding.
I made some engravings onto hardened glass disc's. I did try and use cutting and marking too but made the glass molten and started cracking. Did you find after the engraving you have a brittle layer of glass left?
+Slice Workshop my laser is too weak to "real cut". It make only small "crack" line and glass is broken along this line, like with regular glass cutter.
plastic melts. To engrave such plastic, power must be very high and impulse very short. This evaporates plastic and do not melt. In this video I am engraving real glass, not plastic.
40W Chinese laser is specced to cut up to 4mm thick materials such as wood or acryl, but I don't think it'll cut through the glass. Engraving is possible. Cutting? I don't think so.
Elmer Fudd who knows what is benbox? To cut you need laser power and cutting speed. Optional- compressed air aid. All other fancy words are only sales managment.
+peshgeorgiev No, it is so called "sealed CO2 laser". Only thing I need is to cool laser with water. I do it with big bucket and small pump (pumps was sold with laser).
+savelkaunas Thanks, can you tell me if the laser has life. How long can it be used or can it be used continuously for small commercial work. Also what is the exact model of the one that you got? I found a lot of complains of lasers like this? Yours seems to work nice.
Yes, the laser has life. For the good laser tube, it can continuously for commercial work. But for the small factory's laser tube, the quality can be guaranteed.
+bfg2600 depth is changable. You can tune it to your need simply by changing the height of the table. Engraving depth is depending of focal length of the laser lenses (some types are available).Cutting depth also depens of focal length and power of laser. Also, some problems can be from the fumes- they can block beam.
I have similar laser like yours, but I don't have this honeycomb-like working tool. Did You make it by yourself? And from what producer did You buy Your machine? I want to cross-reference the offer. ;) For mine I paid around $500, with shipment included.
CAUTION, most eBay laser offers are disingenuous. Have been in conversion with Chinese laser machine manufacturer for several months discussing eBay buyer problems. Chinese laser machines are not the problem. Ebay laser get rich sellers without warranty or service are the problem. Became convinced of their honesty I just purchased my laser machine directly from manufacturer. If I can help anyone resolve a concern or technical problem, before a purchase, please contact me. Fair warning, I am not a conflict resolution resource after a purchase except with my company product sales. I will FREELY try and help answer any questions. No need to buy anything.
we are laser factory from China supply laser engraving machine , fiber laser marking machine , laser cutting machine , hope can have chance to cooperate with your esteemed company , whatsapp 0086-13793068157 email : sales02@xianminglaser.com
That machine is CO2 laser cutting and engraving machine 5030M. If you are interesting in this machine ,contact me Email: sale001@harvardlaser.com, whatsapp :+8615688838105.
You can find one on eBay or Alibaba, but probably You won't get any warranty for it. It's better too look for an importer on Your local market and pay more for a piece. I work in a company that imports these machines from China, directly from the producer, and then we are reselling them on our domestic market. We are of course more expensive then random seller from Alibaba, but we give You up to 24 months of warranty. And I think it's worth the price, because if something happens to the machine (and if You're unlucky it happens a lot) You're not left alone.
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You should check it with the seller. Some writes that the tube will last up to 6000 hours, but it's bullshit. It's probably around 2000 hours, with working on full power. If You'll work on a lower setup the tube will last longer.
Suggestion: etch the paper sleeve that goes around the cup, not the cup itself. The sleeves can be folded flat, and you'll have a much easier time(and most likely with less expense) than finding a cylindrical laser marking system. Why not just use a sharpie like everyone else? It's going to get tossed when the person is done with their coffee anyhow?
Yeah. Plus the danger of the engraving weakening the cup. Unless you want online reviews of "I left jb coulter's coffee in my cup holder while I went in the grocery store and when I got back, the interior in my Mercedes was ruined". Not to mention there are companies that will do custom printing on thousands of cups for much cheaper and less effort.
