Neolith debuts at Munich High End

beanbag said:

Sure they apply initial horizontal tension to take out the wrinkles and get the film to lay evenly over the clear spars. 1. But that horizontal tension goes away quickly after the panel is assembled.

It is theoretically impossible for a curved piece of material to have tension (in the direction of the curve), because unless there is an opposing force, that tension will straighten it out right away. When was the last time you saw a curved piece of string under tension?

You can easily check for yourself by taking a sheet of paper and bending it into a curve. This represents a 2x2" chunk of mylar film that is in the middle between two of the spars, i.e. not supported. Tug along the "straight" direction, and the shape doesn't change. Tug in the curved direction and it will straighten out right away.

IF there is any residual 2. horizontal tension, it will cause the film to bow / sag between the spars, as the horizontal and vertical tensions "fight" each other.

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beanbag said:

Can a moderator move ALL the posts regarding panel horizontal tension over to another thread so I can explain there instead?

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bonzo said:

Start another thread, posts can be moved later

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User211 said:

So keep checking back, put my hit count up and make me think it is all worthwhile

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Dougster said:

Not convinced another thread/spade is the best thing for Mr Bean bag or that the forum really wants a hole that size

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