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Author Topic: Sloooow progress on the I3 clone  (Read 1472 times)

KingBeetle

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Re: Sloooow progress on the I3 clone
« Reply #15 on: July 14, 2018, 11:13:35 AM »
My first attempts at benchy had a really severe step like the one you pictured.  I blame the slicer.  I was using Slic3r 1.3.0 
I downloaded the Prusa fork of Slic3r (https://www.prusa3d.com/slic3r-prusa-edition/) and the problem went away (or at least became significantly less severe).

I'm really digging the Prusa Edition of Slic3r.  It improved the quality of all my prints, and has already configured settings (or at least a really good framework) for my MK2 clone. 

It has Z-hop on retraction enabled by default, which has remedied the issues I have been having with my inductive Z probe hitting my prints and knocking them loose from the build plate.  And yes, I have it raised up as high as I can get it and still have it trigger.  I suspect its lack of sensitivity range stems from the fact that I bought the absolute cheapest one I could find ($2.39 USD shipped) from AliExpress.
I may play around with the Z-hop settings though - the default Z change is 0.6mm and it's set to do it on any move longer than 1mm.  It's quite noisy.  Thinking I may drop it to like 0.2mm and require a move that is equal to or greater than the horizontal distance offset between the nozzle and the probe.


jinx

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Re: Sloooow progress on the I3 clone
« Reply #16 on: July 15, 2018, 03:46:18 AM »
 you made belting progress,

you compared the speed setting with prusa and your standard slicer. suspect/thinking you got a little over extrusion going on, causing the ribbing and the prusa slicer moving slightly faster which in turn is  stretching the filament. giving the smoother finish.

        I drop the E/step in firmware ( by 20 increment ) down side to this is, could get a great wall and crappy top finish. (so dont go to far!).  the most sane approach!  with slicer is to tweak the Extrusion Multipliers, think they in the PRINT SETTING> ADVANCE  dont really use slicer that much these days. and haven't really tweaked those setting. so cant be much help here, but thats where i start with slicer

ps
 I drop the Z hop, just adds time to a print, but if you gonna use it, check out some of the acceleration related to it may reduce the noise. Auto bed probing over rated,  if you ask me and given how close that probe is to the prints, I be tempted to move it off the carriage and mount on the frame, use it as an endstop on the Z axis,, mount it so it triggers of the x axis bars.   
« Last Edit: July 15, 2018, 04:10:36 AM by jinx »
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MEgg

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Re: Sloooow progress on the I3 clone
« Reply #17 on: July 15, 2018, 08:44:53 AM »
My first attempts at benchy had a really severe step like the one you pictured.  I blame the slicer.  I was using Slic3r 1.3.0 
I downloaded the Prusa fork of Slic3r (https://www.prusa3d.com/slic3r-prusa-edition/) and the problem went away (or at least became significantly less severe).

I'm really digging the Prusa Edition of Slic3r.  It improved the quality of all my prints, and has already configured settings (or at least a really good framework) for my MK2 clone. 
[...]

My suspect is also Slic3r, since the step is not there when printing with Cura.
If I find time (as soon as laptop is ok and after my holidays - these are holidays with wife so no robot or 3D stuff) I will try that.
There is Cura-slicer, Slic3r : are there other slicers that anybody here tested?
Will the Prusa branch be ok for a delta printer like mine?

1st project: Dagu 5 Rover + Dagu - 4 Channel DC Motor + Red Back Spider robot controller + Raspberry B+
Chassis + wheels: https://picload.org/image/dggroior/20150831_028.jpg
current: https://www.keepandshare.com/userpics/m/a/r/k/usegg/2016-04/sb/img_3480-79682018.jpg

KingBeetle

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Re: Sloooow progress on the I3 clone
« Reply #18 on: July 16, 2018, 04:20:59 AM »
There is Cura-slicer, Slic3r : are there other slicers that anybody here tested?
Will the Prusa branch be ok for a delta printer like mine?

I personally have only used Slic3r.  It has done what I needed to do (mostly) and was easy to learn. 

As for the Prusa fork of Slicer being suitable for a delta, I don't really know.  Josef Prusa's justification for forking Slic3r was to be able to provide a slicing solution to his customer base that was pre-tuned for Prusa products.  Considering that, I question if it would offer delta users any advantage.
On the other hand, gcode is gcode is gcode, right?  Aside from the hardware specific codes of course - Obviously you aren't going to take gcode sliced for a Makerbot and expect it to work well on a MK2/3...

 

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