i post my question here… i built printer k8200, it prints, mechanic parts ok, electronic ok, software ok too. I used velleman pdf manuals, i downloaded them, there were some small mistakes but no problem for me.
But i miss one pdf / maybe could be last of all /, how to check qulity of my prints, few advices what to check, what adjust to improve surface of prints. / and not only surface…/ how to print the best how it is possible / with standart parts /.
i imagine pdf with detailed photos of prints of REFERENCE OBJECT from factory builded printer, to see what i can reach in quality. I like to have some stl file of this reference object, and this object i want to print, and compare with photos from factory. It would be fine, if reference object is smaller than box / cover of electronic.
This is my idea for improvement bulding…one pdf file more …
And question for skilled people, can you post some links about topic i am asking ? i think Velleman takes some time to create official pdf, but i like to check my prints asap.
Moderators - Velleman Support ? This is support by Velleman ?
to people - it would be fine to show some prints after building your printer to compare quality for standard printing with other ppl.
Really i dont understand. What and why are everyone improving, if he doesnt know base level quality of print ? If one built printer
without mistakes it moves, it prints…but what about quality ?
This forum is full of pictures of print / someone wrote in other thread / but my comment, yes pictures without knowing size of object
/ 150 x 150 x 150 mm cube looks much better than 15 x 15 x15 mm /; without defining of filanment / abs looks better than pla ? /…
First print - cover for electronic is big object, i dont understand why so big object has to be first print ? And mostly on the pictures
it doesnt look fine. By my opinion small cube or cylinder / 20 x 20 x 20 mm / would be better for first adjusting and checking parameters of print.
I hope someone will write anything to this topic…standart quality of print / pla or abs/
Printing a small box isn’t a good indication because the printer only moves a small amount. A large item will give a better indication of whether or not the printer is out of square, whether there are faults in the Z axis causing uneven layers, or whether there are errors in your extrusion amount as the more layers you get the more samples of data you will have to average out how well it works.
My printer was printing a small 10 x 10 x 10 cube almost perfectly but when I went to print anything bigger the extruder dug into the bed if the printer had been on for a long time because the heat had warped the bed. This didn’t show up on a small cube but it did show up on a large item. I was then able to fix the problem and get a more even print surface.
[quote]Really i dont understand. What and why are everyone improving, if he doesnt know base level quality of print ? If one built printer
without mistakes it moves, it prints…but what about quality ?[/quote]
You print something, if you don’t like it you improve the printer until you do like the quality of the prints. Everyone is different and everyones printer is different (being that they are kits and user assembled). You might not have to improve anything to get perfect prints, or if you’re like me you might have to modify things before you can even assemble it because none of the holes line up and end up replacing a lot of things on it.
The main improvements people are seeming to make are:
Belt tensioners to remove any slack in the belts. You can either print one or if you have a dremel you can make the holes in the original brackets an oval shape to allow some tension on the belts
A new mount bracket for the Z axis motor
A flexible joint between the Z axis motor and the Z axis screw
A better (more precise / straight) Z axis screw
here mine examples and i think it looks great.
but i also noticed it depants on the color you use.
as i used the color blue and i did not like it because it has a glosy finish that shows all Imperfections.
now i use the color Yellow and it look a lot better because it not glosy so you cant realy see the Imperfections.
and as ntoff says i changed the Z-axis because the X/Y axis skips steps after a 2/6 hour its realy ignoring. becuase of the wobbeling on right side from the z axis.
and the only paramater i changed in slic3r is the extruder multiplier because i got to much fillement the object. default = 1.15 i think and i have it @ 1.07 but this bepants on every printer.
so you need to find the correct value for your printer.
as i’m a beginner with 3d printer i need to tweak the other values better. but i work at a metal workshop so i know how Gcode works.
but so far it look ok to me.
