White Cheap Ebay PLA for me lol, I get very few failures, its pretty stong, can be glue with Poly cement if required, can be sanded, painted, drilled etc…I usually do a load of test prints before I run the actual order, especially if if complex or has a thread on it…
I find that most of the problem with failed prints for me is not usually the material i.e. filament but the bonding to the print bed.
Mostly using ABS as ABS shrinks and tends to warp because of this. Why does ABS warp? Well ABS was designed specifically for injection molding and was designed to shrink some for easy removal from the injection molds. It is the shrinking that causes the warping. In the beginning I had problems with material bonding the the print bed but now that is typically not a problem. I have had one bad lot of material that was PLA in silver, it was the first time I had ordered from this particular supplier and the filament was very brittle compared to what I had been ordering. This one does not bond well and breaks very easily, it was ordered from Gizmo Dorks. I will not buy from them again because of this problem. Typically I buy Hatch Box. I am ordering something new (to me) called flexible TPU (Thermalplastic Polyurthans) it is supposed to be 90% ABS and 10% impact modifiers. Supposedly it bond better to the print bed and has less warppage. We will see.
ABS and TPU (or PU) are totally different plastics with somewhat similar properties. polyurethane is an elastomer meaning it’s one of the flexible plastics, TPU is also often advertised as TPE (thermoplastic elastomer). ABS is just a thermoplast, but has no flexibility from the chemical point of view. I find Polyurethane (in my case Ninjaflex) easier to print compared to ABS (no warping), but as it’s rubber-like and flexible there are only very limited use cases for this material. Additionally flexible filaments need to be printed extremely slow and often can’t be properly painted, sanded, glued,… I’m really curious about what material it is that you ordered, maybe you can post a link of it?
I use Z-ABS and Z-Hips on my zortrax. On my other machine i use mostly Polymaker Polyplus, Polyflex and Polymax. I also use the recycled ABS and PET from Refil. I think 75% of my prints are in ABS.
I stopped using cheap (Chinese) filaments. It’s on the long range cheaper to use quality filaments.
The biggest problem i see whit cheap PLA is breaking filament. I like Polymaker very much and it’s also Chinese. I use my ZYYX and Creatbot for PLA prints. If i want something strong and big (warp sensitive) i use Polymax.
The filament of Dutch filaments is also good and pretty cheap.