hidden notch
I'm a bit confused by the material database recommending PolyMax PLA for impact strength instead of a PC or PA6/12-CF.
What am I misunderstanding as to why the Max PLA is supposed to be stronger in this test? I sell a couple parts that are subject to long term impact from other components due to their nature and I want to ensure I'm using the best material for longevity.
lethal dust
So there's a huge misnomer about PLA not being strong. IF it werent for it's low temp resistance PLA would be one of the best materials out there (depending on the blend of course).
Polymax PLA was designed around superior impact resistance and they did a fantastic job with it. Here are the official numbers for the charpy impact test.
hidden notch
Yeah that’s the chart I was referencing but every case I’ve seen with it in my prints so far doesn’t give it a lot of impact strength so I’m hesitant on it as a whole for my flight sim mod applications.
PC is obviously very well known for industrial applications is where I get caught up in it mentally as a stronger material as well
hidden notch
so i just came across some conflicting info, both pieces from polymaker.
https://youtu.be/dTWAJmWeGHc?si=x8NF8rlkIR0Di0d3&t=53
TLDR the video claims CoPA has higher charpy impact strength than polymax pla
the video is 2yrs old. did the formula for polymax PLA change over time to make it stronger than the nylon variants?
lethal dust
The formula hasn't changed. What has changed is the way way it gets measured which is far more accurate now.
inland cobalt
Polymax is their version of HTPLA needs to be cooked at 90c time varies with build. Stay away from HTPLA or dive in feet first. Polymax is a entry level HT. 850 870PLA way stronger. Called V3 at Protopasta 870 @ filament depot.
I like a lot of Polymaker filaments but the competition beats the crap out of max. Too expensive. If the CF 8% pla winds your watch it’s a better idea for added strength without curing
lethal dust
PolyMax PLA is not high temperature anything. At 90c it will turn into a puddle. It is a high impact resistance PLA.
PLA-CF is weaker than the other offerings. It is 100% for asthetics and worsens the other properties.
inland cobalt
Agree on the CF. Have you used max
lethal dust
Yes.
inland cobalt
Never cured it
lethal dust
The glass transition temperature of PolyMax PLA is 60c.
inland cobalt
Well it’s real garbage and Polymaker should change instructions
lethal dust
What instructions are you looking at? The website clearly states everything.
inland cobalt
If you do want some real strong HTPLA 850 870 call Protopasta or Filament depot. They all cure at 90c and cost less than Max
lethal dust
Again, it's not HTPLA
inland cobalt
Sure isn’t
lethal dust
So I'm not sure what the complaint is. If you are suggesting a that polymaker design one, you can add that in #1046065844364517457
inland cobalt
No complaints my bad not up to date. I’m checking our inventory on Max
Just checked dead stock in 285 some 175 and I always thought it was Polymakers curing pla.
lethal dust
Where are you that you stock polymaker?