Anyone print in PP? Thoughts? Tips?
Just started (http://www.instagram.com/p/BXUzt0HjM_L/?taken-by=tomulinek). Tough material, but closed chamber and adhesion foil is almost needed for middle and bigger parts.
https://www.instagram.com/p/BXUzt0HjM_L/?taken-by=tomulinek
I’ve never used it, but the new Ultimaker PP seems like the best bet if you’re going to. Traditionally PP is very warpy and difficult to print. Also doesn’t want to stick to much. Unless you really need light weight material and/or chemical resistance I don’t see much value to it vs other material choices
It’s a highly crystalline polymer so it shrinks a LOT as it cools. That’s why it’s so warpy. The crystallinity is also where a lot of the really nice properties come from, so modified low-warp blends don’t appear to be a super promising avenue.
PETG type filaments have most of the positive qualities of PP (tough, chemical resistant) without as much warping. The only big practical example I’ve seen where PP is significantly better than PETG is for living hinges, and flexible nylon grades will also do pretty well for that.
Now, composite PP (fiberglass fill or carbon fill) has a lot of promise because the composite fibers reduce warping and you get a really nice mechanical synergy between the stiff fibers and tough PP matrix. But it’s hard to find composite PP filament. (And again, you have to ask why not just use composite PETG.)
PP is much more flexible than PET(G) or CPE and it looks like more wear resistant (I will test it).
@Tomas_Vit I guess my point is that YES, PP has a really nice set of properties, but if you only need one or two of those properties, other filaments can work equivalently well – without the warping. Basically the question is what you need from it that justifies the pain dealing with shrinkage.
Hi, I tried it few times. I am able to print cca 5x5cm objects. Bigger objects shrinks too much 
I suggest print on PP tape (tape for paper boxes). HE 190-200°C HB 70°C. Print speeds 15mm/s. I use large brim - 20mm. I read it somewhere and it seems, that helps with sticking printed objects. I also cooling at 100% speed after first layer with opened windows.
Nozzle size 0.4
Layer Height 0.2
Extrusion width 0.4
First layer speed 10mm
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