Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Laser Pointer Store

Hallo every one

pfav

New member
Joined
Aug 9, 2010
Messages
7
Likes
0
Points
0
Hi guys !
I joined today the forum.

I'm an electronic eng. and I spend my off-work-time building Kites.

After some tests in my office lab, I decide to build a LASER Cutter for spinnaker fabric.

I'm looking for suggestions and warnings ....

Thanks

P.
 
Last edited:

aryntha

New member
Joined
Nov 17, 2009
Messages
2,027
Likes
259
Points
0
Well, here's the question. The fabric you're cutting would likely be of varying colors, right? That'd effect what kind of laser you'd be using. Also, is it synthetic fabric/plastic/poly based?
 

qumefox

New member
Joined
Mar 26, 2010
Messages
3,234
Likes
117
Points
0
I think the material would affect absorption more than the dye in it would. But color would still play a small part, yes.
 

pfav

New member
Joined
Aug 9, 2010
Messages
7
Likes
0
Points
0
Hi guys,
thanks and sorry for late answer!

Let me post a photo
The fabric is nylon (40g/m2)

for sure the power density at fiber end is high, but I used a 120mw laser
 

Attachments

qumefox

New member
Joined
Mar 26, 2010
Messages
3,234
Likes
117
Points
0
If 120mw did that, I imagine using something like a 12x BR diode or one of the 1W 445's would probably cut it fairly efficiently then.
 

pfav

New member
Joined
Aug 9, 2010
Messages
7
Likes
0
Points
0
If 120mw did that, I imagine using something like a 12x BR diode or one of the 1W 445's would probably cut it fairly efficiently then.
I hope!:drool:

The laser source was a LD 1480nm 120mw pigtailed.
I used fiber like a cutter.

Now I bought a 805 nm - 500 mw with a set of acrylic lens for pointer applications.
I have some doubts about spot dimension.

:san:
 

qumefox

New member
Joined
Mar 26, 2010
Messages
3,234
Likes
117
Points
0
Actually i'm not sure how well 405 or 445 would do after looking at an absorption graph for nylon. Looks like there's a BIG peak somewhere around 1650nm though. Not sure where you'd found an IR source at that frequency though. But a CO2 laser would still probably be the best bet for fast cutting.
 

pfav

New member
Joined
Aug 9, 2010
Messages
7
Likes
0
Points
0
Agree CO2 is the best, but it is expensive !!! (or not?)
I'm looking for something is able to cut nylon at 10mm/s.

I will repeat the test using LD 960nm 150mw pigtailed.
 

chipdouglas

Well-known member
Joined
Dec 23, 2008
Messages
4,011
Likes
190
Points
63
nylon is a poylymer. and your material doesnt look especially thick. i agree with qumefox... try the 1watt 445nm laser. it should slice through it nice if your focal length is around 3 inches.

michael
 

Arayan

Well-known member
Joined
Oct 26, 2009
Messages
1,747
Likes
84
Points
48
Warm Welcome to LPF :beer:
Agree CO2 is the best, but it is expensive !!! (or not?)
Absolutely not... for a 20W CO2 laser you could spend approx 500 €, a colored one (20W), green for example takes approx 25.000 € :D
 

biru

New member
Joined
Apr 26, 2013
Messages
1
Likes
0
Points
0
Hello everyone.

This is an old topic, but i'm interested in it because I'm going to build a fabric laser cutter.

After reading all comments in here I think a 2W laser diode will be enough to do it considering I'll need to cut cotton fabric of all type of colours.
Am I right? If so, I saw a "2W 445nm Copper Blue Laser Module W/X-Drive" in which you can choose different lens:

G-2 Standard Barrel
G-2 Extended Barrel
G-2-LFL Standard Barrel
G-2-LFL Extended BArrel

Which of them would be the best option for my purposes?

Thanks.
 




Top