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thorsenrune

Bonding multimaterials

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Posted · Bonding multimaterials

Hi, with our UM5 I work on composite models being partially tough pla partially rubber TPU95.

I try to figure out what is the most efficent and strongest method to make the PLA area bond with TPU area on the same print. Anybody having experiences?

 

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Posted · Bonding multimaterials

If you can, change one of the materials. The second table on this page shows you compatible materials. As you can see, PLA and TPU is not a supported combination.

ABS/TPU or PC/TPU should work quite well.

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Posted · Bonding multimaterials

Also try using mechanically interlocking features. Since this is highly recommended for injection moulding in overmoulding, according to the manuals, I think it also applies for 3D-printing. At least, it shouldn't hurt.

 

Think of a dovetail system, or hooks, or chains that interlock. Think of these concepts, but then all melted and squeezed into one solid block.

 

Have a look at how it is done in tooth brushes: most of them also have overmoulding with interlocking features.

 

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