Quote:
Originally Posted by herky
i knew it wasnt exactly double. but wasnt sure what the equation was,the scale it comes out at is not the issue here its more about whether model will be strong enough.
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Well, had you printed on
A2, that would be exactly 200% the width and height of A4, therefore you'd get 1:36. However, an A3 sheet, having exactly 2x the
area of A4, has only square root of 2 (about 1.4142) of its
width and
height*. Therefore your model's final length and width will be approximately 141.42% greater, and the scale will be about 1:51, because 72 / 1.4142 ~= 50.91.
Regarding sturdiness, if the gramature is the same, the weight scales with area, therefore is 200% of A4 and your model will be 50% as sturdy because sheet strength is roughly proportional to thickness, which is the same.
*remember, width x height = area, therefore if area doubles, linear dimensions increase only by sqroot(2)