great video, thanks for sharing!

Bravo for your video!

Hi . May u learn us how we can make countersink holes . Thanks alot for your effort

Very Helpfull

We have a 1 kW fibre laser cutting machine. Want to cut 4mm carbon steel sheet with compressed air. What should be the cutting parameters: 1. Air pressure, 2. Focus distance, 3. Nozzle size and single or double and 4. cutting speed? Thank you.

Hello friend ... your videos are very interesting, now I want to ask you if you know something about laser reflection and how it can be avoided so that it does not damage the source.

@smallshoplasers8785

3 жыл бұрын

I work with nonreflective materials so it's not something I work with. However I have heard that having the laser head slightly tipped can reduce the chance of a reflection damaging the source. The other is to start your peirce high as reflective material is much less reflective once melted, and being higher reduces the likelihood of a reflection making it to the source.. the other is to use a head or source that is protected from reflection, they use mirrors that scatter any energy from a reflection.

If you're doing private projects with a smaller model of fiber laser, and time isn't a factor, can you cut thicker sheets with compressed air?

@smallshoplasers8785

3 жыл бұрын

There are limits. You have to be able to liquefy the metal or the air cannot push it out of the way.. with a 500w the max with is about 14ga or 2mm for clean cutting. 3mm you can cut but it's slow and lumpy, lots of clean up. With oxygen you can go up to about 6mm or 1/4" and get a somewhat decent cut. But a higher power laser gets you more of everything.

very interesting test,,, but i have question,, i will buy psa generator which yeld about 90-95%... do u think its feasable?

@bai381

3 жыл бұрын

No, min 99.7% purity of oxygen

Cuantos bar son 22 ga?

Hi , thanks for this very useful guide here, Our machine is 500 watt max fibre laser cutting machine. our regular job is 2 mm stainless steel. our compressor is fs-curtis model seg 7.5hp 12 bar, 120 gallon tank, with refrigerant dryer and pre and post filters, 17scfm actual. will it be good for 2mm stainless steel (14 gauge sheet) can you make a 2mm ss cutting video same design as in this video. if no , than suggest the upgrades specifications.

@smallshoplasers8785

4 жыл бұрын

I have cut 2mm stainless with this setup. However it was just a few holes. I would suggest a 2mm single nozzle with a 0.3mm cut height (nozzle stand off). Start with a focus of -2 and a cut feed rate of 2m per minute and around 165PSI or 11.4 bar and then start adjusting things to see what makes the parts better. You will get a slightly blackened edge, that may or may not be acceptable for your application... I don't work with much stainless but I will make a video as soon as I get some in the shop but it will be at least a few months.

@taloot123

4 жыл бұрын

1st u need n2 for stainless 2nd the pressure is about 240 psi..

@smallshoplasers8785

4 жыл бұрын

@@taloot123 air can be used if a slightly oxidized edge is acceptable. Not everything is aerospace or medical. I have not found that much pressure to be needed, more pressure is nice but sometimes you can use less. We cut 2mm carbon steel with 165psi compressed air, more pressure would be nice but 165 can work.. with a larger machine you may need more pressure to clear the cut kerf of slag.. so 1000 watt machines may need higher pressure.

@taloot123

4 жыл бұрын

@@smallshoplasers8785 no information in the internet and multiple user experince... thanks for share. i have 1kw JPT+ Autofocus+ Linuxcnc

How much kW machines you are using??? And any update for the Prerameters..

@smallshoplasers8785

3 жыл бұрын

So all of our current videos show a 500 watt. We are currently running a 1500w. As for parameters. I have now experienced setting up a couple other machines and can say that the numbers are not directly useable one machine to another. We have parts of a video on dialing in a material, which teaches the process for finding the correct values for your machine.

Hello! I couldn't find a test in your videos that shows how thick plates can be cut with the 500W fiber laser. Carbon steel, stainless steel, aluminum, bronze, copper. I would be interested in cutting these materials in 1mm thickness steps. 1mm, 2mm, 3mm... etc. Ty.

@smallshoplasers8785

Жыл бұрын

Our original 500w source lost one of the three modules nearly 3 years ago and we are currently running a 1500w laser. But a 500w can do 1.5mm in steel and stainless, we did 2mm with some regularity but it was not perfect. Aluminum bronze and copper is not generally recommended on low powered machines because it damages the sources due to thermal reflection.

@rendszergazdanyh2537

Жыл бұрын

Ok, I understand. Thanks to reply.

Waaaaaaw

I m using compressed air for cutting ss and even brass with my 1KW fiber laser machine. The main problem I have is the protective lens will get a lot of water on it and I have to clean it very often. I m using a good compressor with air dryer and three filters. I tried using different pressures from 12 BAR to 18 BAR. I always got the same result. This problem is delaying a lot my work which does not happen when using Nitrogen. Any idea on how to eliminate this problem?

@smallshoplasers8785

4 жыл бұрын

You need an refrigerator air dryer that is sized for your airflow. And some additional filters to get oil out. If you go to the compressor setup video we give a list of what we are using. Naturally you will need to upscale since your running a larger compressor.

@abdenbimandar3904

4 жыл бұрын

@@smallshoplasers8785 I got three filters and air dryer that come with the compressor. I should clarify: what I mean by water on the protective lens it's just one drop of water that spoils the cutting quality, this is why i must clean it every five minutes. I think my setup is ok, here are the specs of my compressor Air Compressor Max free air delivery: 1.0 M3/min Max working pressure: 30 Bar Power / Voltage: 11KW; 3Ph/380V/50HZ Volume of air tank: 300 Liters Net weight: 500KGS Air dryer Capacity: 1.2 m3/min; Pressure: 30 Bar Refrigerant: R22 I got 3 Line filters 1.6 m3/min 30bar pressure

@smallshoplasers8785

4 жыл бұрын

@@abdenbimandar3904 I would say something is wrong with the setup if any water is getting through. Without looking at it I would have a hard time pointing to any problems. Some things to check: Do you have an auto tank drain and is it working? How much water are you collecting off the tank drain? Does your compressor have an inter cooler to cool the compressed air before it goes to the tank? This can help to get moisture to drop out in the tank. Do you allow the refrigerator dryer to get cold before you start the airflow? How much water is it collecting per hour or day? Do you have a water separator before the refrigerator dryer? And do you have any paper cartridges to collect oil or fine water mist after the dryer? And last idea, have you adjusted your lasers water cooler unit to compensate for summer temperatures? In certain temperature and humidity ranges the laser cannot be run because of condensation, it could be that your compressor system is fine and the water is coming via condensation. A dew point calculator and temperature humidity gauge can be helpful. I am in the tropics (florida) and after a heavy rain I have to shut down for a couple hours otherwise the machine will be dripping wet from condensation.

@bai381

3 жыл бұрын

@@abdenbimandar3904 maybe your dryer not fit to big air flow, do you use piston air compressor? At least need 4 air filters + 2 oil/air filters

@parkfamily6940

3 жыл бұрын

@@abdenbimandar3904 Hi What is the air compressor brand and model you using now? I have 1000W fiber laser and trying to purchase high pressure air compressor.

Suscribed

Do you also cut stainless with compressed air?

@smallshoplasers8785

3 жыл бұрын

Yeah we are currently cutting 304 stainless, it seems to cut just slightly easier than carbon steel. The edge quality on 22ga to 16ga is smooth and just slightly oxidized a slight straw yellow tint. Seems to come off with passivation.

@MrMBaum

3 жыл бұрын

@@smallshoplasers8785 Nice, we have a 1000w laser on order at the moment. We've been getting really conflicting info on cutting with compressed air. Would you mind sharing what pressure you are using for different materials?

@smallshoplasers8785

3 жыл бұрын

@@MrMBaum we are just running a 500w laser so it's possible our air requirement are slightly lower since our cut speed is likely lower we show the compressor setup in another video and it's a fairly basic shop air compressor with a few add on features but it limited to 175psi max pressure. On 22 ga or .7mm it is 150psi at 13m a minute. On 14ga or 2mm we are running 165psi I think at 2.5 or 3 meters a minute.. the pressures should be at the end of this video.. I'm doing another video on upgrading air line size, with a few experiments we have found nozzle pressure is much lower than regulator pressure due to line drag. So we are installing a larger line to see if that improves things.

@dylanhou9309

3 жыл бұрын

Hi,sir.This is Dylan from SENFENG LASER which has 16 years' experience of fiber laser cutting machine.We are professional fiber laser cutting machine manufacturer.If you have any needs,please feel free to contact me.My Email:dylan@sfcnclaser.com; My Whatsapp:+86 17865122577

Try increasing cutting speed for oxygen

@smallshoplasers8785

4 жыл бұрын

Any higher resulted in cut quality reduction. The oxygen speed setting was dialed in over a long time as we ran the machine on oxygen for over a year.. any higher resulted in poor edges. Air is faster on thinner metal and cheaper. The data is what it is.

Except the air compressor runs on 11kW.

@smallshoplasers8785

4 жыл бұрын

I'm not sure what you are referencing. The compressor setup we are using for our shop is a 5 hp Quincy QT-5 which is roughly 3.7-4kW. Compared with bottled nitrogen or oxygen it is very inexpensive to operate, my power cost to run it is roughly $6 per 10 hours, bottled gas is roughly $90 per 10 hours.. The advantage is cost savings by the hour, the disadvantage is the high investment for the fairly large compressor and drying equipment, and yes you are going to be paying for electricity but it's cheaper to compress air than it is to separate and bottle gases, or to liquefy gas.

@dylanhou9309

3 жыл бұрын

Hi,sir.This is Dylan from SENFENG LASER which has 16 years' experience of fiber laser cutting machine.We are professional fiber laser cutting machine manufacturer.If you have any needs,please feel free to contact me.My Email:dylan@sfcnclaser.com; My Whatsapp:+86 17865122577

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