mendel spring design for soft PLA springs

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After improving my soft PLA profile in skeinforge, I printed a set of soft PLA mendel springs.
These springs are quite good, because they are springy themselves and don't break like the ABS ones.

But with this design the springiness is suboptimal.
So I designed a different type of spring, adopted to the properties of the soft PLA.

The first one was ok, but not springy enough. Expanding the walls a bit didn't improve the springiness:




The walls are printed with 6 threats - but this seemed to be not enough.
Then I mirrored it and printed it again. This was a very good idea:




It has an improved springiness in comparison to the standard mendel springs.

The design can be downloaded here.


Greetings from the lake of constance

BonsaiBrain

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