I bought some black esun petg the filament seems fine on the spool not brittle but all the prints are very brittle. Printing with a qidi x-one with temps at 240 head and 70 bed. Esun recommends 230 - 250 head no heat to 80 on the bed. I'm at my whits end trying to figure this out i'm thinking bad filament. What would cause this and could it be bad filament?
Hi All,   So one of our key costs as a hub is of course filament and we've longed to try and find a way to reduce this cost - like other smaller hubs we found that it isn't really viable to buy in bulk from the manufacturer in the quatities they want to sell and the cost of filament from 3rd parties and suppliers really hurts our profit margin - So...  
Ive had my quiditech dual extruder running pretty consistently now for over two months with excellent results. however recently ive been getting these "blobs" on corners and sometimes these "loops" on horizontal surfaces. ive slowed down and it seems to help some, but im wondering why this happens all of the sudden......im adding hours to my prints just to overcome this and would rather not.