Tips for designing mammals

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Re: Tips for designing mammals

Postby NeverCeaseToCrease » February 22nd, 2018, 3:31 am

What if there was a way to have it line up on a grid, if one were to use a grid with a combination of 90 degree angles as well as 45 degree angles?

My reasoning for this is because with box pleating, the axial creases are all on 90 degree angles and the 45 degrees are for ridge creases. The grids place axial creases on the grid lines. Seeing that the axial creases on a 22.5 degree angle cp are always at 90 or 45 degrees while the ridge creases are all 22.5, wouldn't it make sense for a grid to be used at 90 and 45 degree angles?

I plan to give this a try, but if somebody has already tried this before, please stop me before I end up banging my head on the wall...
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Re: Tips for designing mammals

Postby Baltorigamist » February 22nd, 2018, 5:05 pm

The problem is that a line with a slope of 22.5deg is the diagonal of a 1:(1+sqrt2) rectangle. Sqrt2 is by definition irrational, so it won't fit the way I think you think it will. Your definition of axial creases only applies to uniaxial bases as well, and a lot of 22.5deg crease patterns are not uniaxial.
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Re: Tips for designing mammals

Postby binky2819 » March 13th, 2018, 10:01 pm

You aren't entirely confined to using a grid when implementing box pleating in a design. For instance, let's say you find this reference point:


and let's say length AB is some irrational number, like 0.238962 or whatever. You can still divide that length into however many pleats you need to make claws, for example. Even though none of the creases would lie on any grid.

You just have to try various different approaches. It could be that you have to make a totally different design from you original test folds. Maybe you do end up using a grid or maybe it's more convenient to use diagonal symmetry. It's all about experimenting.
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