Will ABS stick to PLA?

[Jamesarm97]

I was wanting to do a multicolor print (black on top of pla). Does anyone know if ABS will stick to PLA if using the Jetty firmware and pausing at a height then changing from PLA to ABS?

[Z LeHericy]

i don't see why not, but how about try it and tell us all how it goes!

-Zeno LeHericy

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On Mon, Apr 9, 2012 at 4:15 PM, Jamesarm97 <armstro...@gmail.com> wrote:

I was wanting to do a multicolor print (black on top of pla). Does anyone know if ABS will stick to PLA if using the Jetty firmware and pausing at a height then changing from PLA to ABS?

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[Aljosa]

Iv done a ton of ABS/PLA dualstrusion prints, and it works very well! Best part about it is if you begin with PLA you can actually either turn off the HBP or just set it to around 40C and your good to go. The ABS sticks fine to the PLA and you can get some pretty awesome prints.

[Rob Giseburt]

I printed this, which is black ABS on "natural" PLA. PLA, like Aljosa said, makes a great raft. 

I'm using it to hold the letters together and in position. 

  -Rob

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[Rob Giseburt]

BTW: That's just sitting on my MacBook, not actually stuck to it. 

Also, the PLA is a .2mm thick layer and that's all. 

  -Rob

On Apr 9, 2012, at 7:47 PM, Rob Giseburt <gise...@gmail.com> wrote:

I printed this, which is black ABS on "natural" PLA. PLA, like Aljosa said, makes a great raft. 

[dob71]

It might depend on the type of PLA and ABS, and the temperatures, and layer width/hight ratio...

My experience was not very good. I was using ultimachine's natural PLA at 180, black ABS at 210 and was trying to print the "cat" thing from thingiverse on the PLA raft and w/ PLA support. The layer height was 0.3 or 0.32 (don't remember for sure), nozzle 0.5mm. The end points of the ABS extrusion threads were curling up and some of the cat's paws (where the first layer contact area with the surface was small) were always breaking off.

 

By the way, printing PLA on top of ABS using the same plastic and settings worked much better. Probably the ABS was still hot enough to allow good adhesion. Maybe the greater thermal expansion coefficient of ABS has helped a bit too.

 

There is no benefit in printing PLA on top of the ABS raft, but since you only want a multi-color object it might work for you.

 

[Jet Jet]

I think so, because both are sticky.

[Travis]

ABS details on a PLA body "kinda" stuck for me on my Replicator.  The starter strands tended to pulled off now and again.  The same print in ABS/ABS turned out better.