RetireeJay wrote:Mostly this looks like a problem with bed adhesion. The first layer has to stick well to the bed, otherwise you just end up with a blob. There are hundreds and hundreds of posts about getting good bed adhesion. Happy searching!
Awhedbee22 wrote:I get great adhesion. There isn't warping bring it up or anything.
RetireeJay wrote:Awhedbee22 wrote:I get great adhesion. There isn't warping bring it up or anything.
I guess I don't understand. In your first and second pictures, there is a portion of the model, close to the camera, that is clearly warped upwards. Have you already peeled this up from the bed and the picture was taken after un-sticking it from the bed?
On the other hand, sometimes, if you are extruding significantly too much material for the layer thickness, you can get "bulldozing" where the nozzle plows through plastic leaving a "bulldozed" path with ridges on either side of the nozzle. This is generally only a problem on the first layer, caused by having the Z clearance set a little too low. But if it's serious, the model never recovers; you just keep on building up and pushing around excess plastic until finally the nozzle snags the model and lifts it off the bed. After that, you only get bird's nests and blobs.
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