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  1. tobee11

    Magnet system

    Thank you for the reply. I'd like to add some minor detail and ask a few more questions. The distance between the top of the recessed magnet and the top of the ridges is small - around 1/8". Can I fit an electromagnet in that small of a space? Do you know where I can find a...
  2. tobee11

    Magnet system

    Hello - I have attached a drawing of a simple system that I've been working on. I have a plastic base with a neodymium magnet recessed into the top. There are small ridges protruding from the top of the plastic base. A piece of thin steel will be attracted to the magnet and lay on top of the...
  3. tobee11

    Thin electromagnet

    Hello - I have attached a drawing of a simple system that I've been working on. I have a plastic base with a neodymium magnet recessed into the top. There are small ridges protruding from the top of the plastic base. A piece of thin steel will be attracted to the magnet and lay on top of the...
  4. tobee11

    Linear motion translated to rotational

    Desertfox, Thanks again for all your insights. Im going to get to work on the rotational sleeve version. Take care and thanks again to everyone. Tobee11
  5. tobee11

    Linear motion translated to rotational

    Desertfox, To achieve the rotation only motion, I was planning on simply connecting the bottom of the rod which comes off the top disk to the bottom cover of the sleeve. In this way, the top disk, its rod and the sleeve would act as one single component. Obviously they would have to be...
  6. tobee11

    Wireless object alignment

    Hi zappedagain, Thanks for the post. I think I should add one more qualification to my project....The operator will need to know if he has achieved parallel alignment with the rod while he is moving the 2nd quarter around (i.e. by some sort of nofication - light, buzzer, etc.) He will not be...
  7. tobee11

    Linear motion translated to rotational

    Hi Desertfox, I have attached a few, more clear design sketches with some more detail on how I envision the system possibly working. When thinking of the ratcheting screwdriver, I was thinking that the top disc wouldnt need to move up or down at all. I thought of the top disc as being like the...
  8. tobee11

    Wireless object alignment

    Hi Greg, Thanks so much for responding to my post. So, I am looking for an accuracy of better than half an inch. The distance between the quarters will vary somewhat, but always within the range of more than 1.5ft and less than 3ft. The 6 inch rod allusion was really just to give an...
  9. tobee11

    Linear motion translated to rotational

    Hi Desertfox, The top disc is connected to the sleeve by the rod which runs down the middle of the central core. The top disc/rod/sleeve are not one piece, obviously, but in my mind they are the up and down/rotating system and the central core is just a foundation providing stability. I also...
  10. tobee11

    Wireless object alignment

    Hello, I'm not sure if this is the correct forum for my question, but thought I'd give it a shot nonetheless. Im wondering if there is an existing technology to accomplish the following: I need to arrange (2) points (for example, the centers of 2 quarters) such that an imaginary straight...
  11. tobee11

    Linear motion translated to rotational

    Desertfox, The 'U' shape can be considered a type of "sleeve" which surrounds the central stem. The sleeve and central stem are actually part of a handle. This component is part of a hand tool and the sleeve would be pulled down by the operator. The sleeve would be pulled down (appx 1 inch)...
  12. tobee11

    Linear motion translated to rotational

    Hello, I have attached a very crude sketch of my system. I hope it is clear enough to convey the idea. There are (2) sketches of the top-down view. One shows the system in it's open position (pathway between magnet and steel clear). The other shows the closed position (disk rotated so that...
  13. tobee11

    Linear motion translated to rotational

    Hello – I’ve looked at my project again and think there are a few more details I should share: There is very little space above the “doughnut” (no more than 1/16th”). Therefore, the “pencil’s” up and down motion would have to occur below the upper plane of the doughnut. The mechanism I am in...
  14. tobee11

    Linear motion translated to rotational

    Hello, Thank you all for your responses. It is evident that there is a solution out there for me. A few more details: The "doughnut" from my example is 3" in diameter and made of 18 gauge steel. The doughnut needs to be able to rotate (on a plane that is perpendicular to the up-and-down...
  15. tobee11

    Linear motion translated to rotational

    Hello, I'm interested in learning about gears & mechanisms that translate linear motion to rotational motion. Specifically, I need to translate the motion of straight-line linear motion (essentially straight up and straight down) into rotation, but rotation that is perpendicular to the linear...

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