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Author Topic: My first attempts at laser engraving.  (Read 91525 times)

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Offline Cosha

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Re: My first attempts at laser engraving.
« Reply #120 on: December 14, 2010, 07:59:08 AM »
Sorry, im a part i mean 100mw laser diode, not 1mw

100mW with 5v should be ok, i can get this focused to smaller than a pin prick i think 1/2mm

I just ordered some 650nM glasses from work (i love working for the MOD)

Offline Cosha

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Re: My first attempts at laser engraving.
« Reply #121 on: December 14, 2010, 10:57:43 AM »
No, Not working, 5.1v Via UBEC Lights are on, pin point beam - nooo burn!

Bummer!

Offline Tweakie.CNC

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Re: My first attempts at laser engraving.
« Reply #122 on: December 14, 2010, 11:03:20 AM »
Sorry to hear that.

Is the device lasing ?
Are you sure it is not 12 Volt operation ?

100mV is not ideal but you should be able to burn black colored plastic stuff.

Tweakie.

PEACE

Offline Cosha

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Re: My first attempts at laser engraving.
« Reply #123 on: December 14, 2010, 11:08:10 AM »
Manual said 3-5v, i checked the output of the bec at 5.1v 3amp

Yeah the laser is on, i tried wood and black foam, did not even get hot...?

How much does your laser have going in, 12v?

Offline Cosha

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Re: My first attempts at laser engraving.
« Reply #124 on: December 14, 2010, 11:18:21 AM »
Great, i have the 1a Model = TUV rated, so i expect there '100mW' is Actualy 100mA Consumption, meh it was worth a try i guess...Not going to spend to much money on making one!

I might buy a cheap one from China Via Ebay, and have another go

Offline Tweakie.CNC

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Re: My first attempts at laser engraving.
« Reply #125 on: December 14, 2010, 11:31:21 AM »
It must be 18 months since I last used the diode laser but from memory it was 10 volts input to the control panel.

Go on get a CO2 tube (ex.MOD), you could do real damage to wood and foam then.  ;D ;D

Tweakie.
PEACE

Offline Cosha

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Re: My first attempts at laser engraving.
« Reply #126 on: December 14, 2010, 12:26:02 PM »
After looking at all your kit, i think id pass  >:D

Do you mind if i copy your drag knife specs? im just like you with CNC, just a few years behind! and i have been building mine fore 3 years now :-)

Offline Tweakie.CNC

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Re: My first attempts at laser engraving.
« Reply #127 on: December 14, 2010, 01:07:38 PM »
You are welcome my friend, copy anything you find useful.

I have now learned (took a while) that you never stop building a CNC because it is never ever finished -  it is just an ongoing project.  :D

Tweakie.
PEACE

Offline Cosha

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Re: My first attempts at laser engraving.
« Reply #128 on: December 14, 2010, 01:12:26 PM »
This is true & i love that!

Keeping on the 'Laser' topic...

I have got a 32x speed diode from a cd burner, will the driver i have be enough to poer it? Trial and error?

Offline Tweakie.CNC

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Re: My first attempts at laser engraving.
« Reply #129 on: December 14, 2010, 01:30:07 PM »
Off hand I would say yes, but I have no experience of using a diode which I don't actually have the manufacturers specification for. It is important to know the maximum current that can be used as it is a very fine line between bright and blown.
Can the maximum current be decided by guesswork ? and if so how ? - these are questions for which I have no answer. If the diode cost nothing then there is nothing to be lost by trying or experimenting but some of these diode on eBay fetch real money and I think that 'trial and error' with these would be just plain daft.

Just my opinion but I am not a gambling man and never have been.

Tweakie.
PEACE