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  1. bvanhiel

    Logo disappearing from drawing templates. Why?

    It won't save in a PDF, but I didn't try printing it directly.
  2. bvanhiel

    Logo disappearing from drawing templates. Why?

    It seems graphics related, but it occurred on two different machines (both Dell Precision laptops, but with different Nvidia cards). It also persists when the file is reopened.
  3. bvanhiel

    Can the plane Orientation be changed on an existing part?

    If it's imported you could just rotate it with a move body feature.
  4. bvanhiel

    Logo disappearing from drawing templates. Why?

    It was inserted into the format. I can get it to reappear if I load another format and then the original. It hasn't disappeared again.... yet.
  5. bvanhiel

    Logo disappearing from drawing templates. Why?

    I've inserted a TIF into a drawing template. It seems to occasionally disappear. The box will be there and I can edit the size and transparency options, but no image is displayed. Is the image part of the format or is it a lost reference to the original graphic file? I'm using 2008.
  6. bvanhiel

    Usefull copyright material on line

    Actually, I think it's worse. If someone got hurt and the corrupted standard was the source....
  7. bvanhiel

    Snap Fit Designs for Plastic Injection Molding

    I don't recall if he covers crush pins in the book. It's essentially molding a close fitting pin and socket on the opposing parts. Small ribs are molded into the pins to create an interference. If done correctly the pins will break before they can be pulled from the sockets. Assembly of the...
  8. bvanhiel

    Snap Fit Designs for Plastic Injection Molding

    John, That's an excellent book and will answer all of your questions. Other places to look for information are the various plastic design guides put out by the resin manufacturers (the old GE one was pretty good if you can find it). Snaps with no action will probably require bypass shut-offs...
  9. bvanhiel

    New Tech Motorcycle or BS

    You're not alone, naturalextraction. Perhaps I had set my expectations too high after reading the earlier comments, but the rendering looks like C level student ID work. Motorcycles, bicycles, and chairs... seemingly every design student in the world has tried putting their stamp on one of...
  10. bvanhiel

    Syringes

    How are the internal zero draft surfaces of parts like disposable syringes molded? Is it just a stripper plate or is the tool and ejection more complicated?
  11. bvanhiel

    Material Selection

    TheMotionGuy, I can't help you with the suitability of laser cutting, but I have some ideas for the heat. You might be a little close Tg-wise for polycarbonate, but if you can add some glass it might be close enough. My next choices would be Ryton (PPS), Ultem (PEI), and Radel (PPSU).
  12. bvanhiel

    Does anyone have a link to a supplier of wing blank stock

    Dave, If you're not concerned with efficiency you could use pretty much any section, even a flat sheet of 1/2" plywood and be safe for this application. Just make sure it's bolted down. I currently have a 6' section of Cessna wing attached to the roof of my Civic and crosswinds are not a...
  13. bvanhiel

    2 orthogonal screws

    baumisf, The second screw will overconstrain the joint. You'll get some additional pressure in the joint space, but it will be impossible to predict how the screws are carrying the load. Furthermore, once the bone resorbs (assuming this in vivo) the two screws will serve to hold the joint...
  14. bvanhiel

    Former employer is my first client

    A 3X multiplier is the number I would expect for an established firms, not someone working out of their basement. It's the number I would expect your former boss's company to be charging their clients. If he's selling you're services for $70/hr you will obviously not get him to pay you more...
  15. bvanhiel

    Reaction Loads on Bent Hose

    Twoballcane, I believe that CarlB's calculation will give you the force required to keep a rigid pipe elbow in place, not the force required to keep your hose from straightening itself. I don't know the right answer, but my approach would be to think about the volume change that the hose...
  16. bvanhiel

    Has anyone sold a design?

    I agree that patents are generally more trouble than they're worth, but without one you will not be able to license a purely mechanical invention. Software code and industrial design can be protected by copyright, brands can be protected by trademarks and other inventions can be protected by...
  17. bvanhiel

    Has anyone sold a design?

    First: Make sure your idea isn't already patented. Without even knowing what it is your working on I'd bet my life savings that someone has already patented it. USPTO.gov is you're friend (assuming you're in the USA). Spend a day or so searching. Second: If by some miracle it's not already...
  18. bvanhiel

    9-Way Valve Concept

    Mike, By "9-way" I mean 1 input and 8 possible outputs. I have no idea whether that is correct terminology or not, I was just going along with some data I had calling the 4 output valve we have a "5-way". Doesn't make sense to me either. Thanks for the pointer to Hamilton. Their 8 port...
  19. bvanhiel

    9-Way Valve Concept

    I'm designing a product that has a need for an inexpensive low pressure (<20psi) 9-way valve with orifices in the 1/8" range. This doesn't seem to exist on the market, and custom brass bodied valves blow our budget. Something we are considering is making the valve body out of delrin with a...
  20. bvanhiel

    Motor Sizing and Power Requirements

    My advice: review your calculations, you're already underpredicting the force by 10X. Then review the difference between force and power. The worlds smallest motor could move your beam if Archimedes would lend his lever. The right solution depends on more than the forces. It depends on how...

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