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michael.r
(@michael-r)
Eminent Member
strange problem do not know how to describe see image

it seems the printer tries to shorten some lines that have to much overhang... but my other printer just print it and it works moreless but what does the mk3 here,, the slicer does not show this..

happens with different slicers. but only with the mk3, have also mk1 there this does not happen

Posted : 08/04/2018 4:38 pm
darKing
(@darking)
Trusted Member
Re: strange problem do not know how to describe see image

It does not take a shortcut but the layers are not on top of each other (the top layer does not touch the bottom layers and therefore it does not stick to it)

On your bottom layers it's clearly visible that your part is not close enough to the bed or not really sticking well.

Posted : 08/04/2018 5:01 pm
michael.r
(@michael-r)
Eminent Member
Topic starter answered:
Re: strange problem do not know how to describe see image

the printer does not follow the line what he is programmed to he prints a shorter directional line... why that???

Posted : 09/04/2018 7:23 pm
ibn
 ibn
(@ibn)
Trusted Member
Re: strange problem do not know how to describe see image

I bet the printer is actually following the intended path, if the extruded filament doesn't immediately stick it is "dragged along" though. In the inner contour of a circular shape it looks like this. The same will happen if you try to create curved bridges, the fillament follows the shortest path. Is there a severe overhang in your model (it doesn't look like it on the picture)? Did you experience a layer shift?

Posted : 09/04/2018 8:18 pm
brian.d11
(@brian-d11)
Active Member
Re: strange problem do not know how to describe see image

Mine did the same thing until I lowered my Live Z and did mesh bed leveling. I added a pic of what my bottom and top layer looks like. I may be a little low on my Z but it is producing clean parts. Clean the bed well before printing. Greasy fingers on the print bed = bad parts.

Posted : 10/04/2018 12:49 am
Petehagoras
(@petehagoras)
Eminent Member
Re: strange problem do not know how to describe see image

In my opinion it's a construction error.

You seem to have featured the bottom with a fillet. Printed without supports, the second layers perimeter is just printed in the air. The extruded material has nothing to stick on and is dragged along until it finds the next place to settle on. This becomes mostly visible in inward circles, like in your case. Construct a chamfer instead and you should be fine. Attached you'll see a fillet vs a chamfer sliced and illustrated the problem.

I hope this makes sense to you and is of any help.

Posted : 10/04/2018 9:55 am
michael.r
(@michael-r)
Eminent Member
Topic starter answered:
Re: strange problem do not know how to describe see image


In my opinion it's a construction error.

You seem to have featured the bottom with a fillet. Printed without supports, the second layers perimeter is just printed in the air. The extruded material has nothing to stick on and is dragged along until it finds the next place to settle on. This becomes mostly visible in inward circles, like in your case. Construct a chamfer instead and you should be fine. Attached you'll see a fillet vs a chamfer sliced and illustrated the problem.

I hope this makes sense to you and is of any help.

well principal you are right, but my mk1 printed the same without any problem see attached example image

Posted : 10/04/2018 5:57 pm
michael.r
(@michael-r)
Eminent Member
Topic starter answered:
Re: strange problem do not know how to describe see image

look again to the first image - the printer is not following the line he is just shortening his way, the material he printed out is much to short to be as long as the round path had to be... and it is not a problem of that the printer does not get the material right... this problem is reproduceable with different slices...

Posted : 10/04/2018 6:00 pm
michael.r
(@michael-r)
Eminent Member
Topic starter answered:
Re: strange problem do not know how to describe see image


Mine did the same thing until I lowered my Live Z and did mesh bed leveling. I added a pic of what my bottom and top layer looks like. I may be a little low on my Z but it is producing clean parts. Clean the bed well before printing. Greasy fingers on the print bed = bad parts.

my problem is not the bottom layer, i mean the layer after that... that are not following it suggested path... they are too short

Posted : 10/04/2018 6:01 pm
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