You'v got 48 hours to comply Michael, i'v got a DVD Burner and i know how to use it, its your choice !
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You'v got 48 hours to comply Michael, i'v got a DVD Burner and i know how to use it, its your choice !
As I don't wish to teach people how to suck eggs please ask a specific question!!!!!
There are loads of tutorials on the net for building a laser pointer with a DVD diode, thats the hard bit!!
Cheers!
Michael.
Right,
What power?
Where do you buy them?
What to use for a power supply?
How do you focus it?
What will it cut / engrave given the power?
When are you coming to fit it and wire it up for me ?
Is that enough to work with ?:heehee:
Could you use the DVD mechanism's focus servo ? (i.e. it already has a beam splitter and monitor diodes)Quote:
How do you focus it?
Okay.......
Power - The one I used was 180mw 635nm (visable red)
Where to get/PSU & focusing all here http://cgi.ebay.co.uk/300mW-650nm-Re...3A1%7C294%3A50
http://www.mickduffin.com/laserkit.jpg
This includes everything you need, really easy. Comes with lens & body which is 12mm od so you'll need to fashion a clamp for that. The lens supplied is plastic however so was the one I used.
To drive it, simply give it 6 - 20v when you want it to fire. I would reccomend either a transistor or solid state relay to turn it off / on as switching speeds could get to high for a mechanical relay.
Focusing is easily adjusted by rotating the lens at the end of the unit.
At 180mw - 300mw you will only be cutting foams up to a few mm's and vinyl / stickey back plastic.
for engraving, Pretty much anything organic eg; leather, Wood etc. Also most plastics but results will vary depending on the colour of the material, A red laser will hardly leave a witness mark on red plastic and would struggle to set fire to bright white paper. However if was a slightly darker colour paper would ignite almost instantly.
John S. When ever you like mate!!!!:beer:
http://www.mickduffin.com/image2.jpg
Michael Duffin.
Not sure to be honest, Don't think the DVD burner runs the diodes that high (so little heatsink may not be good enough, though possible on a lightscribe?
There also designed to be a couple of mill off the surface which could presesnt quite a problem.
Once your diodes in your Z axis and focused to produce the smallest spot size at 50% z axis travel, you can then jog your Z up and down to focus.
The beam created with those Axiz 12 x 30mm lens looks like an hour glass, At the point where the two sides of this hour glass cross is where your material surface should be.
Like........
http://www.epiloglaser.com/images/lens.gif
Ignore the steering mirror.
Michael.