My print has mange
Posted by leadinglights
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My print has mange December 23, 2012 01:08PM |
I had a persistant problem with buckling of filament in my extruder and Nophead kindly pointed me towards the cause - bcak pressure from my 0.25mm nozzle, combined with the Wade's extruder not being really 1.17mm filament friendly. I made a few engineering modifications and increased the hot end temperature to 240 degrees - I had been using 220 degrees, but my first new pring seems to suffer from a huge range of skin complaints that - none of which I saw at the lower temperature (even though things printed at lower temperature seldom finished due to the filament buckling)
I have attached some photos to show the effect:
Ther first photo shows a good section near the bottom of the print, layers are 0.15mm
Next, a mild case of acne,
Next, Scroffula,
Not to mention seasickness, with horizontal waves from any corner.
The infamous Z Wobble.
And alsoRickets, where the limbs of the print have detached from the hot bed and bent - Not clear in a photo to put here.
I have either not had these problems in my early prints, or had them in a much milder form. I think it unlikely that the temperature alone is the principle cause of these and would welcom a constructive critique.
I have attached some photos to show the effect:
Ther first photo shows a good section near the bottom of the print, layers are 0.15mm
Next, a mild case of acne,
Next, Scroffula,
Not to mention seasickness, with horizontal waves from any corner.
The infamous Z Wobble.
And alsoRickets, where the limbs of the print have detached from the hot bed and bent - Not clear in a photo to put here.
I have either not had these problems in my early prints, or had them in a much milder form. I think it unlikely that the temperature alone is the principle cause of these and would welcom a constructive critique.
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Re: My print has mange December 23, 2012 06:09PM |
The problem seem to be in bands on the print. I have attached a photo showing this.
I have checked quite a long length of the filament and the diameter measures from 1.688 to1.822mm (old Moore and Wright micrometer measuring in 0.002mm increments) As that seems to be a bit over the +/- 0.05mm that most suppliers promise, could that be the cause of the problem? I had forgotton that I changed the filament when I was casting about for straws to grasp. Comparing earlier prints that had suffered from the filament buckling problem did appear to be much less diseased.
From a bunch of tests that I am doing using the carriage fro the Rostock machine as a test piece, it looks like the curling is much worse on the new filament - yet to be confirmed as test piece no. 4, using old filament, is not yet finished and the Kapton tape has perhaps reached the end of it's service life.
I have checked quite a long length of the filament and the diameter measures from 1.688 to1.822mm (old Moore and Wright micrometer measuring in 0.002mm increments) As that seems to be a bit over the +/- 0.05mm that most suppliers promise, could that be the cause of the problem? I had forgotton that I changed the filament when I was casting about for straws to grasp. Comparing earlier prints that had suffered from the filament buckling problem did appear to be much less diseased.
From a bunch of tests that I am doing using the carriage fro the Rostock machine as a test piece, it looks like the curling is much worse on the new filament - yet to be confirmed as test piece no. 4, using old filament, is not yet finished and the Kapton tape has perhaps reached the end of it's service life.
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