 Just how flexible is "Flexible Plastic"? [message #52823] Sun, 19 August 2012 11:18 UTC |
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So, I've finally managed to model a CardHolder using Sketckup. The holes are for an elastic band. The walls at their thickest is 2mm and then narrows down to 0.2mm.
I'm questioning if the walls will be flexible enough to hold about 1cm of bus- and credit cards between them? Do you have any insights about this?
Thanks a lot!!!!!
Rune
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| Re: Just how flexible is "Flexible Plastic"? [message #52876 is a reply to message #52823 ] Mon, 20 August 2012 13:07 UTC |
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I'd expect that you'd only be able to hold as many cards as is the thickness of your gap. Your design isn't set up to spring or apply any force onto the cards to hold them in. What you need is a clamping shape much like an alligator clip
This will allow you to hold 1 card, up to approx. the width of the gap when full open.
The Mad Moder
michael@shapeways.com
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| Re: Just how flexible is "Flexible Plastic"? [message #52882 is a reply to message #52876 ] Mon, 20 August 2012 14:29 UTC |
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Hi Michael
Thanks a lot for taking time to reply!
I'm going to use a rubber band to hold the cards in. Are you saying the walls will be too inflexible to extend to about 1cm?
Cool idea with the clamp too! 
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| Re: Just how flexible is "Flexible Plastic"? [message #52883 is a reply to message #52823 ] Mon, 20 August 2012 14:31 UTC |
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Ah, I read that part, but forgot about it... How thick is your gap? It would probably still be better to have a radius on the inside to help if flex. A sharp corner could be a sheer point.
The Mad Moder
michael@shapeways.com
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| Re: Just how flexible is "Flexible Plastic"? [message #52884 is a reply to message #52883 ] Mon, 20 August 2012 14:41 UTC |
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The gap is 2.2mm
> It would probably still be better to have a radius on the inside to help if flex.
Trying to understand, am a bit new to talking about models. You mean to make the "connection" between the upper and lower part a halfcircle, thus making the connecting part thinner?
> A sharp corner could be a sheer point.
This I don't understand at all. Sorry! 
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| Re: Just how flexible is "Flexible Plastic"? [message #52885 is a reply to message #52823 ] Mon, 20 August 2012 14:56 UTC |
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So you want it to flex from 2.2mm to 10mm... I think it would push your cards out. With this design I wouldn't go with more than 3 or 4mm of cards. It would be like an over filled binder. As far as the radius, I've pointed out the location in this image, and explained the sheer point a little. A radius will absorb the flex better.
The Mad Moder
michael@shapeways.com
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 Re: Just how flexible is "Flexible Plastic"? [message #52886 is a reply to message #52885 ] Mon, 20 August 2012 15:11 UTC |
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Hi
Thanks for explaining!!! Got it now. Will make the gap larger and use a radius instead as you explained!
Thanks a lot!!!
Rune
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