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 Post subject: Bad quality, help please
PostPosted: Sun Jul 09, 2017 12:29 pm 
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Hello,
First sorry for my bad english. So my problem is i get a very bad quality on my printing, I start to use my vertex K8400 i'm a real beginner in printing 3D.
If someone can give me a tuto or his/her settings to print with ABS and a good quality, it's cool. (Pricture of settings is the best way to tell me the solution)
1.75mm ABS Filament

If you need more details, tell me your question


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PostPosted: Mon Jul 10, 2017 3:20 am 
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Well there are a number of things to cause bad quality prints...

First thing you could do - post a photo of an example print. If we can see it, we can point out possible causes and remedies.

As a general helpful guide, have a read of this:
https://www.simplify3d.com/support/print-quality-troubleshooting/

If you have just built a K8400 kit, then the most common newbie issues are:
• Poor x-y axis alignment. See http://www.k8xxx-3dprinters.crimed.be/w/index.php?title=XY-Carriage_Alignment which explains the issue better than the Velleman manual!
• Poor bed levelling - Use a piece of A4 paper folded twice as a feeler gauge between all three points of the bed - the paper needs to have slight resistance between the bed and the nozzle.
• Incorrect print temperature. This depends on the brand of ABS being printed. Poor layer adhesion - print hotter. Mushy blobby parts, print cooler. Make a 5C change, see what happens.
• Use a Brim when printing ABS without a heated bed. Avoid large parts. Try to keep the print area / chamber as warm as possible, no draughts.
• Over-extrusion. By default, the printer is set to 200 steps per mm for the extruder. Really, this should be around 147 steps per mm. In Repetier-Host, Goto Config-> Firmware EEPROM Configuration -> Steps per mm E: 147.0

Lastly, as a beginner, I would recommend starting with PLA plastic rather than ABS. It is a much easier plastic to print with, makes almost no smell and will stick to an unheated Buildtak printbed much nicer than large ABS parts.


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PostPosted: Mon Jul 10, 2017 9:31 am 
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Ok thank's i will test all of this and tell you what is going on


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PostPosted: Mon Jul 10, 2017 2:46 pm 
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If you are just starting out it would bee better to use PLA as it is a lot more forgiving then ABS.


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