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Re: Cheap Chinese Laser Engravers are Fun
Posted: Fri Sep 01, 2017 12:58 am
by Dr. Sherman Sticks M.D.
ah spoke too soon, just googled it.
so they provide the software and then its a usb connection?
Re: Cheap Chinese Laser Engravers are Fun
Posted: Fri Sep 01, 2017 4:23 am
by Pepe
This is awesome! Looks really great.

Re: Cheap Chinese Laser Engravers are Fun
Posted: Fri Sep 01, 2017 11:43 pm
by Jwar
A couple things. You should not need an air assist while engraving a raster image. If you are vector cutting however, you will. The frequencies are quite different and you need it to prevent fires. I'd also keep an extinguisher handy just in case. Though I've never had any paint start fire yet. Almost but not there.
Chinese set ups can be fun but be careful. If they aren't properly sealed they can give off radiation.
You need some sort of exhaust if you don't have one. Use this instead of the air assist. Trust me. I've been using a laser for around 4 years now. You can get a load but good enough one at Harbor Freight for pretty cheap. I use an airbrush compressor for air assisting too. So both items can be purchased there.
Powder coating is a bitch to cut through unless you have a fiber laser. So, look into that if you ever want a new laser. You should not have to do anything to the powder coating after engraving other than clear coating it. I mean, clean it up with some alcohol or even water, then dry it and clear coat it. That will protect the finish for years.
For removing residue, use Goof Off. It works like a fucking charm man. The denatured alcohol works too but it takes more elbow grease.
Looks good man! If you have any questions and I can help, let me know!!
Re: Cheap Chinese Laser Engravers are Fun
Posted: Sat Sep 02, 2017 7:31 am
by culturejam
jwar wrote:Chinese set ups can be fun but be careful. If they aren't properly sealed they can give off radiation.
You need some sort of exhaust if you don't have one. Use this instead of the air assist.
This thing ain't boxed in at all, so there's no way to seal it or have an exhaust (unless I make enclosure for it). I typically etch powdercoating outside on the back deck and use a fan blowing across the whole setup as my "exhaust". Here's what they look like assembled:
I'm not gonna pay fiber laser money to cut these boxes when I can use a diode laser @ 2.5W for $175. $10k+ for a hobby pedal tool is a bit much for my bank account.
For Function f(x), we use a 30W CO2 Eiplog (and I'm not the guy operating as I know very little about how lasers work, as you can tell by these posts). This little dinker is just me fucking around in my garage to see how much utility I can squeeze out of the cheapest possible machine.
A lot of people told me that anything sub-20W wouldn't be enough to etch powdercoated boxes. My reaction: Challenge Accepted!

Re: Cheap Chinese Laser Engravers are Fun
Posted: Sat Sep 02, 2017 8:22 am
by Chankgeez
phased plasma rifle in the 40 watt range?
Re: Cheap Chinese Laser Engravers are Fun
Posted: Sat Sep 02, 2017 8:49 am
by culturejam
Chankgeez wrote:phased plasma rifle in the 40 watt range?
Yep, and for <$500:
http://amzn.to/2gs8hLj
Re: Cheap Chinese Laser Engravers are Fun
Posted: Sat Sep 02, 2017 8:50 am
by Chankgeez
Re: Cheap Chinese Laser Engravers are Fun
Posted: Sat Sep 02, 2017 4:15 pm
by Jwar
I get what you're saying. What I'm saying however is to be careful.

I didn't pay 10k for my newest laser and it's a 30 Watt Epilog. It was more like 7k. haha.
The only problem with the Chinese stuff is there's no support if the stuff breaks, which it will eventually. So, I guess for most folks, hobbyist or not, they just weigh the overall costs of replacing a machine versus buying one that has US support. If I have an issue with my Epilog, I can literally phone up and get support or my rep can come out and fix shit.
I guess if you're just trying to get your feet wet and fuck around, it doesn't matter though. I've often thought about trying something like this in leu of what I'm using now. I just don't have anywhere to set up anything else.
Re: Cheap Chinese Laser Engravers are Fun
Posted: Sat Sep 02, 2017 6:13 pm
by multi_s
jwar wrote:I get what you're saying. What I'm saying however is to be careful.

I didn't pay 10k for my newest laser and it's a 30 Watt Epilog. It was more like 7k. haha.
The only problem with the Chinese stuff is there's no support if the stuff breaks, which it will eventually. So, I guess for most folks, hobbyist or not, they just weigh the overall costs of replacing a machine versus buying one that has US support. If I have an issue with my Epilog, I can literally phone up and get support or my rep can come out and fix shit.
I guess if you're just trying to get your feet wet and fuck around, it doesn't matter though. I've often thought about trying something like this in leu of what I'm using now. I just don't have anywhere to set up anything else.
Buying literally the cheapest you can get and seeing what it can do is always very intriguing to me (chinese or not). Sometimes this has turned out to be foolish but sometimes you get some pretty usable stuff for not much money. I don;t want to speak for the OP but i totally get having something like this to play with. Night of heavy drinking vs having a laser. (:
A few weeks ago I bought the cheapest 80w Co2 laser i could find. its still in shipping via canoe but was ~1K USD so im not expecting much. Even on aliexpress most 80w machines are 2k + so... i'll report back in if it ever shows up. ALso i dont mean to imply a night of heavy drinking costs me 1k.
I agree with the support for stuff from china, although some support i have received from some places has been quite good, it helps to know how to fix your own problems with most of these machines. The worst support however i have had with machine problems/the biggest screw you in the last few years was a company from Florida ,so there you go. Buying form USA does not always solve this problem/ensures nothing. It varies company by company, not country by country id say.
S
Re: Cheap Chinese Laser Engravers are Fun
Posted: Sat Sep 02, 2017 6:41 pm
by Jwar
Oh I agree with you for sure.
For laser however, I've found that Epilog's support is amazing and it's nice to be able to get parts fast when you need them. For instance, if my tube goes out in my laser, I can have one in 3 days time from them. Or a mother board or if I need another lens...etc. I ordered a rotary device from them (it cost most than your whole laser LOL! WTF!) and it took 2 days to get here.
I've always been curious about those high wattage cheap guys. Let me know what you think. The more power, the faster you can run. My dream is to have a Galvo laser that's stupid fast so I can just pump shit out left and right. Even though I know I don't need it. hahaha
Re: Cheap Chinese Laser Engravers are Fun
Posted: Sun Sep 03, 2017 11:16 am
by culturejam
jwar wrote:I get what you're saying. What I'm saying however is to be careful.

I didn't pay 10k for my newest laser and it's a 30 Watt Epilog. It was more like 7k. haha.
I meant a fiber laser. Those are usually pretty pricey, and there aren't many (if any) cheap Chinese options.
jwar wrote:The only problem with the Chinese stuff is there's no support if the stuff breaks, which it will eventually. So, I guess for most folks, hobbyist or not, they just weigh the overall costs of replacing a machine versus buying one that has US support. If I have an issue with my Epilog, I can literally phone up and get support or my rep can come out and fix shit.
Apples and oranges, really. My little dinky laser was $150. Any part on it is commodity junk I can get cheap online, or I could just buy a whole new kit and have a full set of replacement parts for next to nothing. It's all stepper motors, controller board, LED laser head, and v-rails. Way less complicated than a CO2 laser. No need for support.
jwar wrote:I guess if you're just trying to get your feet wet and fuck around, it doesn't matter though.
Yeah, that's the whole point. If I didn't make clear from my previous posts that I was just trying to see what the cheapest possible hardware can do, well...I guess I really blew it.
I know when you have really nice gear, you always want to recommend it to others, even if they are clearly not looking for that. I do it all the time with camera gear. Somebody asks what is the best point and shoot, I say: Canon 1Dx. If you can't get Canon Professional Services to answers your calls and send you replacement gear, what's the point in even having a camera?

Re: Cheap Chinese Laser Engravers are Fun
Posted: Sun Sep 03, 2017 11:51 pm
by Gone Fission
Would this be any use for etching bare aluminum, or just something softer like the finish CJ etched off?
Re: Cheap Chinese Laser Engravers are Fun
Posted: Mon Sep 04, 2017 12:18 am
by multi_s
Gone Fission wrote:Would this be any use for etching bare aluminum, or just something softer like the finish CJ etched off?
i really doubt it
Re: Cheap Chinese Laser Engravers are Fun
Posted: Mon Sep 04, 2017 3:45 pm
by culturejam
Gone Fission wrote:Would this be any use for etching bare aluminum, or just something softer like the finish CJ etched off?
No, I'm afraid not. You need to spend a lot on a laser than can etch metal. It would be cheaper to get a CnC kit and mill the art into your enclosure. A LOT cheaper. And then you could do a ton else with it.
Re: Cheap Chinese Laser Engravers are Fun
Posted: Mon Sep 04, 2017 8:41 pm
by multi_s
if you use marking compound/cream it seems like you can use a modest laser to "etch" things on to metal. or you can anodize your case and then do a process similar to cj, from you tube it looks like this can be done with the 40-60watt range co2 lasers.
i have absolutely no experience doing this. i just looked on youtube. aka now i know everything.