Leather Laser engraving cutting question

[echojdlaser]

Hello everyone,

We have tested leather laser engraving cutting, for processing area are black.

Who have any idea on dealing with black part?

Echo

[Litografa]

As I understand right you want DO NOT HAVE BURNED EDGES during cuttng?

[echojdlaser]

Dear friend,

How to avoid buring the edge? How to deal with?

It is the point.

Echo

Originally Posted by Litografa As I understand right you want DO NOT HAVE BURNED EDGES during cuttng?

[bpoulin]

I'm not sure you can cut leather without burning it, that is how the laser removes material, possibly multiple low power passes???

[Litografa]

We did a lot of test with main question HOW WE CAN AVOID BURNED EDGES AT ALL or at least lower level of burning. Best results were achived with argon instead pressed air in air assist. But it was most expensive solution. Second place belong to nytrogen, and third to CO2 (cheapest one). So replace air in air assist with some gas which do not support burning.

[echojdlaser]

Dear litografa,

How to change the air as CO2, Nitrogen, argon?

Thanks

Originally Posted by Litografa We did a lot of test with main question HOW WE CAN AVOID BURNED EDGES AT ALL or at least lower level of burning. Best results were achived with argon instead pressed air in air assist. But it was most expensive solution. Second place belong to nytrogen, and third to CO2 (cheapest one). So replace air in air assist with some gas which do not support burning.

[bpoulin]

My guess would be a welding supply store. You can get Argon and possibly nitrogen there. And usually they are a gas supplyer so CO2 would probably be something they carry. If not find a vendor for soda on tap, like resturants use. Those systems use very big tanks of CO2. Then it's just a matter of getting a regulator, and hooking it up where you air goes into the machine. Replace compressed air with the gas of your choice.

And on a more dangerous note I just read about a guy who uses compressed oxygen with a 250w laser to cut metal, the oxygen and laser vaporize the metal. Very intersting build. DIY CNC CO2 Laser Site

[Litografa]

Fully agree with previous post, will try to find pictures from customer's laser who have replaced air with nitrogen - will post here.

[brasil]

I have already seen (years ago) in shoe factories the use of simple spounge and water to make the leather "humid" (?) before engraving/cutting.

After the laser engraving/cutting use the spounge again to clear the dirty that the smoke generated.

The cutting borders will still be burned, but with a more clean detail.

[echojdlaser]

Hello everyone,

Many thanks for your replying.

There are so many interesting ways to deal with burned part on leather. We'll try them.

Thanks for your share with your rich experience.

Miss Echo

[echojdlaser]

Hello all friends,

What do you do?

You are all familiar with laser machine and learther processing state. We wander you are also manufacture, seller for laser machine? or you are using these machine?

Awaitting for your discussing.

Miss Echo

[gsm]

Hello,

I read that text weeks ago. I was trying cut leather by co2 laser, with CO2 and nitrogen blowing (I replaced the pressed air).

My results are not successful. There is soot on the edges and surfaces. It is not acceptable for me - every cut shape is dirt. I'm thinkig about argon, because welders use it in processing. Disadvatange of the argon is that it is expensive and can be dangerous (processing in closed place).

Besides,

Originally Posted by bpoulin I'm not sure you can cut leather without burning it, that is how the laser removes material, possibly multiple low power passes???

I wonder isn't it true. Nitrogen blowed on material does not protect before burning on black dirt(soot) material.

Maybe it always will be dirty after laser cutting and it is recomended to clean leather after processing? But how to clean it properly?

What do You think?