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Hi Pravbk,
Yes, normal old pla prints great and is ok to look at but as soon as you give them a little twist they go "Crack!"

The truth is that not all PLA's are made equal!

Most of my prototypes and a good proportion of final prints are with an 'improved' PLA from Esun called PLA Plus (sometimes called pro) and it's tough and definitely not brittle and it's really cheap too. Some other moderately priced improved PLA's I've used are Filamentum, Prusa Brand & Colorfabb Economy PLA.

I haven't tried Hatchbox, Matterhackers, Taulman InPLA and Filaform Pro PLA but I hear some good things about them.

I also use a few better quality name brand PLA's for special one off jobs like phone cases and these are quite a bit better than the Esun though up to triple the price... though bare in mind that small prints like phone cases in the pricey filaments would still only cost a couple of bucks.

For the best looking prints with a fair bit better toughness than the Esun I use either Polymaker PolyMax PLA or ColorFabb PLA PHA. If excellent toughness and strength is a priority then the Polymaker PC Max polycarbonate is the one I'll always reach for and the finish is still good too.

Hope that helps.