Author Topic: The Laser Project.  (Read 780076 times)

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Offline manmeran

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Re: The Laser Project.
« Reply #210 on: September 05, 2010, 11:55:52 AM »
**Even a clock that does not work is right twice a day**

Online Tweakie.CNC

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Re: The Laser Project.
« Reply #211 on: September 06, 2010, 04:35:35 AM »
Just for fun and big enough to engrave a telephone number.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline manmeran

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Re: The Laser Project.
« Reply #212 on: September 07, 2010, 02:09:25 AM »
what news about galvo head ? :D

Amir
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Online Tweakie.CNC

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Re: The Laser Project.
« Reply #213 on: September 07, 2010, 02:11:55 AM »
Hey Amir,

Stop spending my money  ;D

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline manmeran

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Re: The Laser Project.
« Reply #214 on: September 07, 2010, 02:13:52 AM »
Inquiry about the price ?
« Last Edit: September 07, 2010, 02:18:45 AM by manmeran »
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Online Tweakie.CNC

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Re: The Laser Project.
« Reply #215 on: September 07, 2010, 03:36:50 AM »
Best price for a (second user) scanning head I have seen so far (with ZnSe lens) is $2,800 + import duty, tax etc. and even then the focal distance is far too short to be of much use.

Patience is a virtue when it comes to getting bargains  ;D

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Online Tweakie.CNC

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Re: The Laser Project.
« Reply #216 on: September 07, 2010, 06:39:31 AM »
In some ways the waste can be more interesting than the part.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Online Tweakie.CNC

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Re: The Laser Project.
« Reply #217 on: September 11, 2010, 02:00:21 PM »
Another circuit board isolation routed, this part of the jigsaw is a TTL switch. It will allow the selection of one from two inputs. Its purpose is to insert the 1uS 'tickle pulse' in-between the pauses in the PWM signal controlling laser output power.

Incidentally, for those who might be wondering, it only takes me a few seconds to remove my focus lens assembly and fit the 3 phase router spindle thus converting the machine from a laser to a router (not forgetting to fit the covers to prevent the dust getting onto my mirrors) so making these (simple) isolation routed PCB's is really quick and easy.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

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Re: The Laser Project.
« Reply #218 on: September 13, 2010, 03:31:32 AM »
This is the completed TTL switch PCB and the basic diagram of my controller so far.
There is more work to be done on this but at least it will allow me to experiment with different PWM control circuits and methods.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

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Re: The Laser Project.
« Reply #219 on: September 14, 2010, 04:56:42 AM »
Hi Guys,

An Aztec calendar, laser cut into Traffolite (engraving laminate) using the Mach3 impact engraving plugin. CO2 Lasers seem to like hard stuff and it makes quite a noise when it chews into this Formica like surface. The image is 90mm diameter and I used a stepover of 0.1mm and feedrate of 4500mm/min (took around 10 minutes to complete).

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.