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Thread: More stuff for sale

  1. #1
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    Default More stuff for sale

    I'm cleaning house in case I have to move for a new job.
    My contract popped two weeks ago, so I'm job hunting. (Thanks for the Sequester, Washington!)
    Selling this gear helps pay the bills. I need to raise money for a dumpster for the home lab, this stuff has to go.


    Next up in the Steve "firesale"


    #1 The Mirror Turret.

    A 45 degree mirror, coated dielectric for red and blue, is mounted on a flat "table" bearing with very little play. Comes with a belt and a cog for mounting on the motor of your choice for limited rotation of about 170 degrees as is. With some work, you could do, full, fast rotations with this unit by adding a different belt. Nothing stops it from doing a 360' spin. It has a removable flange on it for limit switches. It does reflect about 80% of 532 light as well. I bought these for making a clone of the German "Horizonscan" or "HorizantSkan" graphics projector the late 90s, which could scan around a room under computer control using a mirror like this. I also wanted to experiment with scanning down into them with lumias, and placing a white screen on them and spinning at a high rate to make a 3D display of the type in the 1977 issue of Byte Magazine. These came out of medical X-ray printers. These are the black item in the pictures. The bearing is world class, no detectable slop or play. If you dont want the 45' Mirror assembly, unbolt it and use the rotary table of the "turret" for something.

    I have two I can sell now, however there are possibly four more in storage if I go get them across town. 50$ each + shipping, which was basically my cost "back in the day"

    #2. The Beamline Actuator

    These were medical x-ray beam attenuators. They have three maxon motor based actuators, The specially machined actuator arms have .3" diameter holes, with a small lip on them. The arms used to have lead and aluminum disks in them, which have been removed and will be properly disposed of. The idea was the disks shape the energy of the X-ray beam.
    Now they would be great for gluing a burst grating and two line gratings on the arms, threading a beam down the middle, and making your own "laser rain" of sorts.
    The arms rotate into the beam path. I have the picture set up to show all thee arms, and when in position they are centered and you can scan through all three. You can remove the actuators and use them for other things. These do not require high current like a classical actuator. They run off 5 volts DC. USE a dpdt switch with them for bidirectional actuation if you wish. If you can find a laser that is smaller then .600" inch in diameter, ie Axiz module, there is a place to mount it!

    Each unit has three actuators, and I have three units. This is the circular aluminum assembly in the pics. 35$ each whole assembly plus shipping.

    Again, PMs please if your buying. First PM gets it.

    Steve
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    Last edited by mixedgas; 03-10-2013 at 17:08.
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  2. #2
    swamidog's Avatar
    swamidog is online now Jr. Woodchuckington Janitor III, Esq.
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    i would like one of the three actuator units. i'll send a pm.

    Quote Originally Posted by mixedgas View Post
    I'm cleaning house in case I have to move for a new job.
    My contract popped two weeks ago, so I'm job hunting.
    Selling this gear helps pay the bills.

    Next up in the Steve "firesale"


    #1 The Mirror Turret.

    A 45 degree mirror, coated dielectric for red and blue, is mounted on a flat "table" bearing with very little play. Comes with a belt and a cog for mounting on the motor of your choice for limited rotation of about 170. With some work, you could do, full, fast rotations with this unit by adding a different belt. It has a removable flange on it for limit switches. It does reflect about 80% of 532 light as well. I bought these for making a clone of the "Horizonscan" projector the late 90s, which could scan around a room under computer control using a mirror like this. I also wanted to experiment with scanning down into them with lumias, and placing a white screen on them and spinning at a high rate to make a 3D display of the type in the 1977 issue of Byte Magazine. These came out of medical X-ray printers. These are the black item in the pictures. The bearing is world class, no detectable slop or play. If you dont want the 45' Mirror assembly, unbolt it and use the rotary table of the "turret" for something.

    I have two I can sell now, however there are possibly four more in storage if I go get them across town. 50$ each + shipping, which was basically my cost "back in the day"

    #2. The Beamline Actuator

    These were medical x-ray beam attenuators. They have three maxon motor based actuators, The specially machined actuator arms have .3" diameter holes, with a small lip on them. The arms used to have lead and aluminum disks in them, which have been removed and will be properly disposed of. The idea was the disks shape the energy of the X-ray beam.
    Now they would be great for gluing a burst grating and two line gratings on the arms, threading a beam down the middle, and making your own "laser rain" of sorts.
    The arms rotate into the beam path. I have the picture set up to show all thee arms, and when in position they are centered and you can scan through all three. You can remove the actuators and use them for other things. These do not require high current like a classical actuator. They run off 5 volts DC.
    Each unit has three actuators, and I have three units. This is the circular aluminum assembly in the pics. 35$ each whole assembly plus shipping.

    Again, PMs please if your buying. First PM gets it.

    Steve
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

  3. #3
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    Swami, Thank You!

    TWO left.

    Steve
    Qui habet Christos, habet Vitam!
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    When I still could have...

  4. #4
    swamidog's Avatar
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    keep 'em coming. quick before brad logs in.

    Quote Originally Posted by mixedgas View Post
    Swami, Thank You!

    TWO left.

    Steve
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

  5. #5
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    OK, Swami, Since you ASKED! THE MOTHER OF ALL OPEN LOOP GALVOS: (Well it does have a position sensor, if needed)

    GSI "FMS" precision flexure scanner! Has a torsion bar, so even a 5$ Ebay Chinese audio amp could drive it at 20-30 Hz. Make a remote bounce mirror scanner!

    This has special flexure bearings to handle large mirrors. The one on there is 3" tall, 1/4" thick and .63 inch wide.

    (Do not water or feed it after midnight, and slamming such a large mirror into the "stops" can damage the torsion bar in time, feed with care.)

    A favorite of many pros is to put this in front of a Machida or Machado Grating , aka a MicaChida Effect, named after L. Michael Roberts (no relation) who first described it in public. So you have a fan of beams that goes up and down over your audience. It looks much better, since you don't see the beams coming from a point source with glare.

    The lid comes off, so you can watch the internals spin.

    Includes excellent spare clamp on mirror mount for customization. Slight scratches on existing enhanced silver front surface mirror, but thick replacements are cheap at Surplus shed.

    I've reverse engineered it, including the RF position sensor, which is compatable with G120 sensors. Has very nice mounting holes on the back, and the heatsink is included.

    "DAVE" down in OZ sells a little open loop amp that will drive this, and control can be as simple as a position potentiometer on your console.

    What, 25$ for such a useful monster... One I hate to let go, like the orange (NOT 633 RED) hene tube that I'll sell tomorrow.

    More stuff tomorrow night.

    Thanks for Looking, Steve
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    Last edited by mixedgas; 03-10-2013 at 17:50.
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  6. #6
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    PM Sent for the "Mother of all Galvos"

    Greg
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  7. #7
    Bradfo69's Avatar
    Bradfo69 is offline Pending BST Forum Purchases: $47,127,283.53
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    Boy.... you get tied up with work for a bit and see what happens. Sheesh!

    You HAD your window Swami... I'm gonna start checkin' every ten minutes now. LOL

    Actually, one of the cool things about these items is, I'm realistic enough to know that with my limited skills, thinking I could actually complete a project or experiment started by the great professor is almost laughable. I've had to re-read the listing a couple of times just to see if I can understand what they DO. "Laser rain"? Huh...? And fortunately I've never seen a Horizonscan. Actually, the galvo could have had some promise, as I have a couple machidas.

    I may kick myself one day but, I think I can resist the temptation and sit this one out.






    Of course... it IS only $35.







    Screw it. PM incoming for actuator number two. Cause once I see what Swami builds... Imma gonna want one!

  8. #8
    swamidog's Avatar
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    Quote Originally Posted by Bradfo69 View Post
    Boy.... you get tied up with work for a bit and see what happens. Sheesh!


    Screw it. PM incoming for actuator number two. Cause once I see what Swami builds... Imma gonna want one!

    you can probably hear me laughing from here.
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

  9. #9
    mixedgas's Avatar
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    MOG is spoken for. Second actuator is spoken for. One actuator left.

    Thanks Guys!

    Steve
    Qui habet Christos, habet Vitam!
    I should have rented the space under my name for advertising.
    When I still could have...

  10. #10
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    well, if noone else wants actuator number three and the shipping is not forbidding, i would seriously consider it

    sending a pm, just to timestamp my dibs on this
    "its called character briggs..."

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