Spring top production unavailable from Sculpteo

[skeltoh]

The linked page for the spring top (sculpteo) says it is unavailable. If I upload the STL to their website, it works, but they do not have the same material, PEBA2301, listed. Is there any alternative? I am guessing the material properties are fairly critical for this flexible part.

[jonnew]

Oh, shoot. That's annoying. It looks like protolabs has a rubber-like material (https://www.protolabs.com/media/1022819/sls-tpu-70a-050321.pdf). Unfortunately, its probably going to be more expensive because protolabs is not cheap and its a different material so I'm not sure if iteration will be required. I kinda think there is a lot of wiggle room here as long as the part can be made and is not at all stiff. The less stiff, the better.

[jonnew]

In fact, they have another option that even allows the hardness to be tuned: https://www.protolabs.com/media/1021631/polyjet-material-spec-data-sheet.pdf. I would select the lowest Shore A hardness they offer (30, ~rubber band).

[ckemere]

Printed on a Prusa MK3 using "SainSmart 1.75mm Flexible TPU". The filament is marked as Shore 95 A, so it might need some post processing to decrease the level of pull...

[jonnew]

Nice, thanks for trying this out! Please let us know how this works.

…

On Wed, Oct 5, 2022 at 10:31 AM ckemere ***@***.***> wrote: Printed on a Prusa MK3 using "SainSmart 1.75mm Flexible TPU". The filament is marked as Shore 95 A, so it might need some post processing to decrease the level of pull... [image: PXL_20221004_222600741] <https://user-images.githubusercontent.com/1432092/194085207-99143f6a-2bc1-4068-b04a-c712a9008b11.jpg> — Reply to this email directly, view it on GitHub <#6 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAK47Y5TDA5O27VCXATTUOTWBWGKVANCNFSM5UQESBFQ> . You are receiving this because you commented.Message ID: ***@***.***>

[cxrodgers]

Hi all! Any update or new thoughts on the best material to use for this part? Looks like SLS TPU with the lowest stiffness/hardness was the previous recommendation

[ckemere]

I've never used the spinner with the "proper" spring, but this worked great for us. (https://www.amazon.com/gp/product/B08K79Y8N1)