Hi there,
Problem has recently cropped up of very poor extrusion quality but strangely this occurs at regular intervals every few layers. See photo...
We had a nozzle blockage recently that created a very wispy part. Looked like a prop from the Mummy Returns! Withered and wispy. We cleared the blockage but we now have this persistence extruder issue.
See and example of pre and post blockage part...
While watching the printer the extruder seems to print a few good layers, then spits out a few bad layers. These layers don't bond, add lines of weakness through the part, and of course it looks sh*te too.
It's not the slicer, i've tried parts using Sfact and Slic3r. Both equally affected. Dimensionally the parts are okay, so don't think its the XYZ axes. The extruder appears to be holding and feeding the filament okay, there's no white dust on the feed gear. Can't imagine it's a blockage again otherwise why would it come and go so regularly?
I'm stumped. Any advice please?
Cheers
Sam
Periodic Extruder Quality Issue
Thanks Andy, same results with different filaments.
Turns out it was the filament tensioner in the end. We've tightened it up and back to good build quality again. Must have altered it taking the hot end in and out somehow.
All sorted now.
Cheers
Sam
Turns out it was the filament tensioner in the end. We've tightened it up and back to good build quality again. Must have altered it taking the hot end in and out somehow.
All sorted now.
Cheers
Sam
Still weird a filament tensioner can cause such a repeating pattern.
My Felix 1.5 printed designs on Thingiverse
E3D V6 Hot end upgrade for your Felix
Tweezer bracket for your Felix
Led bar upgrade for your Felix
E3D V6 Hot end upgrade for your Felix
Tweezer bracket for your Felix
Led bar upgrade for your Felix
Indeed weird. On the other hand, if the tension is on the brink then small differences in filament diameter can make a huge difference in traction. The repeating pattern would then just be caused by a repeating pattern in the filament diameter which, I think, is not so far-fetched.
Felix 2.0->3.0dual * Repetier (host+firmware) * KISSlicer Pro, Simplify3D * Cubify Design