Review on MakerBot 375 0007A Tough 1 75Millimeters Black by Justin Jeppi

I can't believe a $65 0.9kg spool of PLA filament can be packed in a ziploc bag (rather than vacuum packed like the others) that has not been sealed and does not contain a desiccant. I thought it might have opened up upon delivery, but after completing the first 10 hours of printing it turned out that the filament had absorbed too much moisture. Revain accepted the return and a second roll arrived, sealed in a ziploc bag but with no desiccant. This replacement roller required a higher temperature (214°C extruder, 60°C layer, 200 micron layer, 60 mm/s on Raise 3D Pro2 Plus) to remove streaks and improve adhesion; that's 11° higher than Raise 3D PLA, which I use all the time. With this replacement roll, the first print of the large mount turned out great, with a slightly matte finish and an excellent grip and surface. We installed the mount and found it a bit more flexible than the Hatchbox PLA and PC. Both have a glossier finish. I started a second print which looked great but got stuck in the printer after 7 hours. This was the first jam with this printer (I only buy high quality filament) and I found a 2.2mm slug stuck in the extruder inlet. I removed the print and started again and after about 3 hours he re-glued with another 2.1mm piece. Apparently for $65 including box and pieces I finally bought this thread and cannot recommend it. Other manufacturers we use supply their much cheaper vacuum filaments packed with desiccant and I haven't had any clumps with their filaments. I ordered and will try another manufacturer's 1kg roll of sturdy PLA Pro Series, which is also $13 less per roll. The print quality of the MakerBot Tough PLA is great, but the quality control is below par at this price point, hence 2 stars for taking my time and jamming the printer the first and second time. UPDATE: As a final attempt to confirm the issues we were having, I moved the Makerbot Tough PLA to the right hand extruder and a little over 2 hours later it failed again for the same reason, with a lump stuck in the guide tube and in the twin gears stuck slipping. I removed the roller, cleaned the cutter gears and installed a new Pro Series Tough PLA roller from another manufacturer and the first print of the exact same part was successful with the same settings as the Makerbot Tough PLA. I even printed simulated 1/4-20 threads and they were perfect, required no tapping and all dimensions were accurate and the part was very solid. Glad to have found Tough PLA which works well but sorry for wasting time with numerous crashes.