closed High power lazers

[Goldmick]

Very high power lazers you cant get these in the uk or get them sent here. There so powerful they can burn though a cd case and light a cigarette. The gold one is solid brass and the silver one is aircraft grade alloy. Price includes batteries. Im selling them for £100 each 

[Pete]

What is the specification of each laser ?
Type of laser e.g. Nd:YAG

Output power e.g. 100mW ( CW or pulsed )
Wavelength e.g. 532nm
Duty cycle - continuous or a few second bursts 
Type of batteries required
Operating time before changing / recharging batteries
Life expectancy - operating hours

Warranty ?

Do you have a video of both lasers working ?

Daft question perhaps but why did you procure them in the first instance ?

Why the multimeter and mains adaptor ?

 

[jonrms]

I am looking for a lazer for my CNC machine to  cut and engrave. How easy is it to adjust the strength and beam. Is it even mountable? 

[Goldmick]

Im not sure what you need to cut. The beam is easy to adjust and the gold one should be able to be mounted im not gunna lie im not sure about cnc stuf but its a strong lazer i would say its good for plastic and the darker the stuf you can burn is easier 

[Pete]

21 hours ago, jonrms said:

I am looking for a lazer for my CNC machine to  cut and engrave. How easy is it to adjust the strength and beam. Is it even mountable? 

Cutting and engraving are for industrial lasers which can be expensive ( or not depending on your budget ).
If plastics and wood you can use a carbon dioxide laser with 10-25 Watt output but for metals you need to look at much more expensive solid-state like Nd:YAG and fibre lasers.
These tend to be q-switched meaning they operate at extremely high peak powers in the Megawatt region, to ablate material rather than heat it, but very short pulses at high repetition rates with mean powers of several watts.

[jonrms]

45 minutes ago, Pete said:

Cutting and engraving are for industrial lasers which can be expensive ( or not depending on your budget ).
If plastics and wood you can use a carbon dioxide laser with 10-25 Watt output but for metals you need to look at much more expensive solid-state like Nd:YAG and fibre lasers.
These tend to be q-switched meaning they operate at extremely high peak powers in the Megawatt region, to ablate material rather than heat it, but very short pulses at high repetition rates with mean powers of several watts.

Thanks Pete, kinda what I assumed. I seen the cheaper 10-25 watts from China floating around. But I do not feel that's suitable.  I wanted to figure out what the Assay offices were using and be able to play with designs on bars etc. 

 

[Pete]

3 hours ago, jonrms said:

Thanks Pete, kinda what I assumed. I seen the cheaper 10-25 watts from China floating around. But I do not feel that's suitable.  I wanted to figure out what the Assay offices were using and be able to play with designs on bars etc. 

 

Marking metals is going to cost you serious money.
Laser £5-10k minimum.
2 axis writing head using galvos and software maybe £3k
Focussing optics + other stuff required £2k
Proper industrial laser marking systems can cost you 5 - 10 x this amount - hence the budget comment earlier.
Suggest staying clear of Chinese lasers; think about after sales & service issues.
There was a very good industrial laser manufacturer that specialised in marking etc based in Rugby, England called JK Lasers.
They became Lumonics ( Canadian owned ) but a few years ago changed back to JK.
They used to publish application notes on laser marking and engraving.
There is / was(?) an association of industrial laser users called 'AILU' who was run by Mike Green from an address in Oxfordshire.
Lots of different industrial lasers nowadays - diode-pumped solid-state, fibre lasers, fibre coupled laser diode, femtosecond etc etc.