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  1. U Offor

    Tolerance between Aluminum and ABS Plastic

    @Stick Yes, adhesives is on the table. I'll likely be making a few thousand, at minimum. @moon161 Hmmm, the overmold/ridges idea seems good. Should the ABS also have ridges too? I took a look at the amazon link, weird that I didn't see anything like that when I was searching. Thanks. @IRstuff...
  2. U Offor

    Tolerance between Aluminum and ABS Plastic

    @FACS The second link definitely helps me to think of alternatives, but the top part of the cork needs to fit into the cap, while the bottom part should fit into the bottle.
  3. U Offor

    Tolerance between Aluminum and ABS Plastic

    @IRStuff This was my worry really. If they were similar materials, then it would be a lot more feasible. As for your other questions, yes it's a reusable cap and as far as the lifetime, I will say the typical lifetime of any wine/alcoholic/champagne bottle, so we're talking about at least 7 years.
  4. U Offor

    Tolerance between Aluminum and ABS Plastic

    @Ron Apologies. I didn't know if this belonged in Materials or Mechanical so I can go close the other topic.
  5. U Offor

    Tolerance between Aluminum and ABS Plastic

    Hello all, I am working on making a bottle cap for a wine glass bottle, and for the cap, it is going to be ABS polymer. On the inside of the cap, there is a cylindrical area where the top of a cork is going to sit (the cork's top is cylindrical too). However, the top of the cork is aluminum...
  6. U Offor

    Very wide tolerances on non-critical features

    Yeah, in this case, I'd leave the tolerance off and just put a 15 and 45 since it's not essential. Machinists typically prefer if you give them breathing room and more times than not, they have their own default tolerances that they use.
  7. U Offor

    HDPE Rotary Hinge Pins

    @ Rick Thanks for the picture. My pin is definitely not like that but a simple cylindrical solid extrusion formed with the crate with I believe a 1/8" diameter (too lazy to check now).
  8. U Offor

    HDPE Rotary Hinge Pins

    @Rick I don't see the cored out design picture or a link to it. This is new information for me because right now, all my pins are solid and not cored out (I assume you mean slightly hollowed out).
  9. U Offor

    HDPE Rotary Hinge Pins

    @Chicopee On two walls of the crate, I will have two pins on each side (four total) which interlock into corresponding slots (class LT2 transition fit to account for heat, tolerance). That way, the load that the crates will carry and the load from other crates stacking up on it can be...
  10. U Offor

    HDPE Rotary Hinge Pins

    @IRstuff It's true metal will be best for the hinges rather than plastic. I am limited on fabrication options and just want molds for all the pieces, then attach them together. This idea I have seems to make sense to me. Adding metals will introduce other manufacturing headaches haha.
  11. U Offor

    HDPE Rotary Hinge Pins

    I am trying to make a simple plastic crate where all four side walls will be connected to the bottom face via hinges that allow the walls to rotate to and away (think of the sides of a cube with no top falling down outward and vice versa). The thing is these hinges need to be purely plastic...
  12. U Offor

    Can SolidWorks create curved edge flanges?

    @GRF Yes I had to do a lot of edits to make sure the flanges don't touch.
  13. U Offor

    Can SolidWorks create curved edge flanges?

    I decided to do some more sheet metal practice on my own using the information I gathered from watching some YT videos. But I haven't seen someone perform something like the below picture. I was thinking of using an edge flange then a jog or a 90 edge flange then sketch bends, but my concern is...
  14. U Offor

    What hinge mechanism can be used to rotate a metal piece on another metal piece?

    @IRStuff In the picture, is the large part of the hinge lock mechanism and the hole it goes into threaded?
  15. U Offor

    What hinge mechanism can be used to rotate a metal piece on another metal piece?

    I am trying to find some type of mechanism where I can have a smooth but not too stiff rotation between two metal pieces. I was thinking of putting a shoulder screw through the pieces (the pieces will be side by side) and a nut at the end. A real world example I can think of is how when you're...
  16. U Offor

    Design Clutch for pen-like object

    @3DDave I think you have the correct idea of what I'm trying to get done. The remaining fluid is dependent on the distance the plunger moved. I'm not familiar with how the ratchet works. What tool are they used in that I can see how they work? Seems very interesting. Just trying to get as much...
  17. U Offor

    Design Clutch for pen-like object

    @zeusfaber Oh I thought @EngineerTex meant whether my idea was a mechanical pencil haha. Yes, that's definitely something I can look into that can work. When I mean "move and stop in accordance to the level of fluid left in the cartridge", @3DDave has the right idea. Essentially, each time the...
  18. U Offor

    Design Clutch for pen-like object

    @EngineerTex Not necessarily, haven't found any name for it. If there's something I can compare it to, it will be dental syringes, where you can remove a used up cartridge after the fluid is finished. However, it's not a medical device.
  19. U Offor

    Design Clutch for pen-like object

    Hello all, I am trying to make a pen-like product that moves out fluid from its tip for some special chores, but I am having issues about the motion of the clutch. The picture you see is a sectioned concept because my thought isn't fully fleshed out. Legend: Black stripes - fluid, Yellow -...
  20. U Offor

    Plastic Lip and Groove Mechanism Makes No Sense

    Hello all, I am trying to understand the mechanism of a lip and groove locking system and how it allows two plastic bodies to stay together in order to make a protective box in which a cellphone will be placed. I am not fully sure on the material yet but I plan to use acrylic, but if anyone has...

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