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vince805

UM2+ not printing well. Under extrusion?

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Hello, My UM2+ used to print everything that I threw at it perfect with both pla(colorfabb and ultimaker brands) and petg(madesolid, colorfabb xt and makergeeks brands). I ended up taking on a job from 3d hubs where I printed a few hundred hours worth of petg at temps 250/70. That job printed great but now that I am trying to do my own prints everything just seems bad.

I have done several atomic pulls and even took the nozzle off and its clean inside. I am now trying to print with colorfabb pla that I have used before with no issues. Here is a picture of the first layer. It is very uneven where some spots are full/normal looking and others are very thin.

2TYkx2il.jpg

I am also getting a lot of lifting now, where before I never used to get lifting. Here is a 4 piece part that I printed that should be straight when put together but since the lifting is so bad it is way out of wack

xnxhn8bl.jpg?1

Also, the bottom of the prints have these weird wavy lines:

yjGUfndl.jpg

zTLT8Jtl.jpg?1

Any ideas?

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