584,849 active members*
4,003 visitors online*
Register for free
Login

Search:

Type: Posts; User: dar303

Page 1 of 2 1 2

Search: Search took 0.00 seconds.

  1. Replies
    96
    Views
    15,336

    The first lens looks bad but its just on the...

    The first lens looks bad but its just on the sides, the area where the beam hits looks fine so maybe it will work anyway. Try it on a piece of paper at low power settings so you can see the shape of...
  2. Replies
    113
    Views
    8,846

    Wouldn't it just take a plugin like the...

    Wouldn't it just take a plugin like the Smoothstepper uses for Mach to control this? But instead of step/dir and i/o coded and sent via USB this sends its output to an RS485 interface?
    Cool...
  3. Replies
    17
    Views
    3,110

    Another good solution I have seen to get around...

    Another good solution I have seen to get around the offset problem of the beams is to use two single line lasers 90 degrees apart. They can be bought for a few dollars at dealextreme.com.
    I will use...
  4. Replies
    9
    Views
    911

    Hi, Interesting thread! My motors on G540 with...

    Hi,

    Interesting thread! My motors on G540 with 36V chinese switcher psu also buzz, all I had was a 6000uF capaitor but that did not help at all so I just lived with it. Resistors are in 9pin dsub...
  5. Hmm, the usual way to convert pwm to volatge is a...

    Hmm, the usual way to convert pwm to volatge is a low pass filer consisting of basically a resistor and a capacitor, even cheaper than $2!
    Also, you may get pretty bad frequency response using the...
  6. Replies
    10
    Views
    1,772

    Check out Granite Devices drivers, can be used...

    Check out Granite Devices drivers, can be used with AC, DC, linear motors and steppers and are cheap. The creator of this drive is on the forum and is a very helpful guy.
    Granite Devices | A Servo...
  7. sellers linearmotionbearings or nice anna on eby.

    sellers linearmotionbearings or nice anna on eby.
  8. Replies
    3
    Views
    624

    I asked the same question om the artsoft forum,...

    I asked the same question om the artsoft forum, check it out: Anyone here tried dual spindles on their machine?
  9. My thought is that when i'm finished with the...

    My thought is that when i'm finished with the machine i'm not likely to take it apart again (will be making chips instead!), better to do it the best I can from the start!

    I'm located in...
  10. Keep the ISEL guides or upgrade to THK/Rexroth etc?

    Hi,

    Me and a friend started building an all steel fixed gantry mill a couple of years ago. We based it upon ISEL components I was given at the time.
    The frame is very sturdy and eveything is...
  11. Replies
    2
    Views
    1,130

    Here are a couple of pictures: ...

    Here are a couple of pictures:

    http://forumbilder.se/images/884201082945Af8c0.jpg

    http://forumbilder.se/images/f84201083251Adeef.jpg

    http://forumbilder.se/images/8d82010120226953b.jpg
  12. Replies
    2
    Views
    1,130

    possibly FS: 60.000 RPM spindle w. ATC

    (If this is in the wrong section just say so and I'll delete/move it)

    Hi,

    I have a 60.000RPM GMN spindle with pneumatic ATC from a PCB drill that I realized I will never use so I wonder if...
  13. Thread: CO2 Laser Power

    by dar303
    Replies
    3
    Views
    833

    Buy a thermal laser power sensor on ebay,...

    Buy a thermal laser power sensor on ebay, sometimes 100-250W ones are available very cheap.
    Some of them can be directly connected to a voltmeter for readings but other require a simple amplifier...
  14. Replies
    7
    Views
    1,456

    I want to mount the laser directly to the gantry...

    I want to mount the laser directly to the gantry and not have it outside the machine using mirrors etc.
    It works ok now (with no beam expander, just focus lens and air assist nozzle) but minimum...
  15. Replies
    7
    Views
    1,456

    Good links, thank you! I want a larger beamsize...

    Good links, thank you!
    I want a larger beamsize before the collimating lens so I can have the optics closer to the laser, ie no flying optics.
  16. Replies
    7
    Views
    1,456

    looking for CO2 beam expander

    Hi,

    I have 16W Synrad 10,6um that has a 4mm output beam diameter. My focus lens is 12,5mm and I would like to have a bigger beam to optimize focus spot without resorting to placing mirrors to get...
  17. Replies
    56
    Views
    7,079

    Wow, very nice build! I wish I hade the...

    Wow, very nice build!
    I wish I hade the equipment and skills to make one of these for my EMCO CNC-lathe!
  18. Replies
    73
    Views
    4,116

    I'll try the program when I buy my spindle+vfd. ...

    I'll try the program when I buy my spindle+vfd.

    The seller is on Ebay and is called love-happyshopping. :)

    a funny and not soo serious-sounding name but he/she/they have a god reputation and...
  19. Replies
    14
    Views
    1,904

    Smart idea! Post a picture or a video of it in...

    Smart idea! Post a picture or a video of it in action! What kind of laser do you have?
    I'm building the rest of the machine myself and will propably have a rigid frame to mount the Z-axis (with the...
  20. Replies
    14
    Views
    1,904

    Nice work! Strangely enough I built a cutting...

    Nice work!
    Strangely enough I built a cutting nozzel wit air assist yesterday too!

    Here it is:

    The nozzle is made from a 30mm diameter and 45mm length of aluminium round stock.
    I have a...
  21. maybe you should try a small diode laser? a 10W...

    maybe you should try a small diode laser? a 10W 808nm ir laser can be found cheap on ebay and optics are not especilly complicated either. no watercooling, hv or fragile glass parts and only a hekto...
  22. Replies
    3
    Views
    1,066

    Hi, I have been absent from the forum a while,...

    Hi, I have been absent from the forum a while, nice to see some posts in this thread!
    My machine is home built and not completed yet. Is going to be a machine with a fixed portal with a Z axis with...
  23. Replies
    3
    Views
    1,066

    Cutting nozzle for CO2 laser

    Hi,

    Has anybody tried to make their own cutting nozzle with air/gas assist for their CO2 laser?
    I have a 16W Synrad and a 50mm focal lenght lens that will need som air assist to protect the lens...
  24. Replies
    2
    Views
    891

    Thanks for the tips! Those drives looks...

    Thanks for the tips!
    Those drives looks expensive, I'll look around and see if I can find any second hand ones on Ebay.
    I guess there isn't any hobby-level motorcontroller that can be used, this...
  25. Replies
    2
    Views
    891

    Driver for 3-phase high speed spindle?

    I managed to aquire a GMN 60.000 rpm spindle from a scrapped PCB-drilling machine. They threw away the drivers and electronics so I need to find a new driver.

    This is printed on the spindle:
    ...
  26. Replies
    6
    Views
    1,661

    Thanks for the offer Eduardo! I will know if I...

    Thanks for the offer Eduardo! I will know if I get the laser in about a week.
  27. Replies
    6
    Views
    1,661

    I got these pictures: the laser:...

    I got these pictures:

    the laser:
    http://img352.imageshack.us/img352/4387/yaglaserrh7.jpg

    The lamp housing & rod:
    http://img175.imageshack.us/img175/9605/pumphusvk4.jpg
  28. Replies
    6
    Views
    1,661

    Any YAG experts around?

    Hi,

    I may get a used YAG-head really cheap.
    The laser is an Spectron Laser Systems and is marked "180W CW / 35mJ"
    I'ts just the head with engraving galvos and I'm wondering about the needed...
  29. Replies
    23
    Views
    3,796

    Zoltan: I'm glad that you got your laser ok! I...

    Zoltan: I'm glad that you got your laser ok!
    I chickened out of buying the 10W Synrad that the guy also had for sale because I didn't know if the was a good trader...and it went for 300 Euro!...
  30. Replies
    23
    Views
    3,796

    Here is the operators manual/service manual for...

    Here is the operators manual/service manual for synrad 48-1-28(W), 48-2-28(W), 48-5-28(W) where good info about control signals and schematics can be found:
    Read from 2.4.1 for info on tickle and...
Results 1 to 30 of 60
Page 1 of 2 1 2