Polypropylene and PVA?

[JoeLee3DP 0]

Is it was possible to print Polypropylene with PVA in the Ultimaker 3? Is this not recommended?

[fbrc8-erin 283]

It looks like it's not supported with PVA according to the latest table on the compatibility chart: https://ultimaker.com/en/resources/49799-material-compatibility

PVA only seems to be supported with CPE, PLA, and Nylon. It says TPU, PC, and ABS are considered experimental/use at your own risk, but my impression has always been that PC and ABS do not adhere well to PVA.

[kmanstudios 1,120]

Ultimaker just came out with the stuff, so I would think it is under the experimental phase at the moment.

[Tomhe 21]

Polypropylene is very chemically resistant because it doesn't interact with most other materials. This is a nice property but also has some downsides:

- It doesn't stick to other polymers (so no PVA)

- It's hard to stick PP to glass, with small prints it's possible but bigger prints need adhesion stickers

[Dim3nsioneer 557]

From some practical tests I can say that PP does not stick on PVA as @Tomhe wrote. So forget this combination for large horizontal overhangs or 'islands'. However, I managed to print a small object with PP and PVA support which had well connected PP layers and just needed the PVA as a bed so no PP line hangs on the bottom side.

[JoeLee3DP 0]

Thanks for the info everybody! I didn't want to waste PP on supports, but I guess I have to now.