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Author Topic: The Laser Project.  (Read 855091 times)

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Re: The Laser Project.
« Reply #220 on: September 14, 2010, 05:04:51 AM »
coooooool ;)
Quote
4500mm/min
Do you build another machine ?


Amir
« Last Edit: September 14, 2010, 05:10:11 AM by manmeran »
**Even a clock that does not work is right twice a day**

Offline Tweakie.CNC

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Re: The Laser Project.
« Reply #221 on: September 14, 2010, 05:24:27 AM »
Hi Amir,

No I haven't built another machine (yet  ;D ).
Because I do not have any cutter torque requirements, when using the laser, I can drive my X Axis right up to my G0 rapids feedrate and still get 100% reliability.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: The Laser Project.
« Reply #222 on: September 14, 2010, 05:29:05 AM »
hi Tweake,

is it possible tell about ballscrew use in X axis ?
pitch?
4500mm/min is very good .

Amir
**Even a clock that does not work is right twice a day**

Offline Tweakie.CNC

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Re: The Laser Project.
« Reply #223 on: September 14, 2010, 05:56:18 AM »
Both X and Y are 16mm dia. x 5mm pitch pre-loaded (twin ball circuits) not certain but I believe they are from NSK (Japan) same as linear rails.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: The Laser Project.
« Reply #224 on: September 14, 2010, 10:39:37 AM »
That is awesome, cool tool!!!

Offline Sam

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Re: The Laser Project.
« Reply #225 on: September 14, 2010, 03:57:26 PM »
That looks awesome Tweakie. It would be neat to see that being made. (hint hint, nudge nudge)
"CONFIDENCE: it's the feeling you experience before you fully understand the situation."
Re: The Laser Project.
« Reply #226 on: September 14, 2010, 06:59:23 PM »
Hello Laser Tweaker's!

I've been out from this site for a long time and just happened to check what all is happening in laser path  ;)

There was a question why RF exited units are more liked in industry?
1. They are very reliable. Can last N * 10 000 h without any problems. After this Synrad lasers can be serviced only at manufacturers service but if you send back the old unit in good shape - you'll get a another unit with reasonable price (less than a new unit thou).
2. Size is much smaller than with NF DC laser
3. RF unit is much more rigid and solid. Glass is a bit risky.
4. High voltage DC is a bit jumpy! Can cause heart beats  :o
5. Life of a glass tube NF CO2 is short. 500 - 1000 h often realistic.

About the CO2- scanner lenses.
Normally singlet lenses are used. A compromise between F-theta quality vs. price. You can try
http://www.ulooptics.com/ulo_optics/products/scannerlenses.asp

or used ones from:
http://www.europalaserboerse.com/eng_product_catalog.php

but they won't be very cheap there. If you find a cheap one - it's very probably ruined in some cleaning operation and full of scratches. ZnSe is actually a type of salt ie. quite soft. Rough cleaning will destroy it.

BTW. The Synrad laser can be tested just by steering it with 5V DC signal which will put it in ON state with full power.

BR.
Arto

Offline Tweakie.CNC

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Re: The Laser Project.
« Reply #227 on: September 15, 2010, 02:01:04 AM »
Hi Sam,

There is quite a lot of smoke and debris with raster scan and I don't think a video would be too interesting but I will give it a go. In the meantime here it is half done  ;D

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: The Laser Project.
« Reply #228 on: September 15, 2010, 02:19:12 AM »
Quote
or used ones from:
http://www.europalaserboerse.com/eng_product_catalog.php
in this site there are many secondhand machine for laser.

Many times, has been looking to build a laser machine for marketing marking textile(jeans , cotton ...)
i share my information with Tweakie But my information is not enough. :)

Amir


EDIT: For Spelling by Budman68 at the request from Amir (manmeran ).
« Last Edit: September 15, 2010, 05:13:09 AM by budman68 »
**Even a clock that does not work is right twice a day**

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Re: The Laser Project.
« Reply #229 on: September 15, 2010, 04:54:47 AM »
Quote
That looks awesome Tweakie. It would be neat to see that being made. (hint hint, nudge nudge)

Here you go Sam - It's a bit like watching paint dry  ;D  (ignore the intro spelling mistake) . http://www.cooperman.talktalk.net/Aztec2.wmv

Music is good though.  ;)


Tweakie.

« Last Edit: September 15, 2010, 05:01:29 AM by Tweakie.CNC »
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.