slic3r and the bed center

[coreformula]

What is the proper way to set the center of the bed in slic3r?

I am using Xmax and Ymax for the endstops and my build bed is 200mm x 200mm

Should I be using min for X&Y endstops?

[Larry Knopp]

On the "Printer" tab in slic3r you set your bed dims and print center

really matters not at all whether you are using mins or maxs, as long as *you* know and set the print center where you want it.  200 x 200 bed / print center : X = 100, Y = 100

<shrug>

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[Paul]

I have a similar question and figure I'll just ask here rather than open a new thread.  The usable print area for my bed is a bit smaller than the bed size, so I set something like a ~10mm buffer on each side of the print bed (due to binder clips and the fact that my home position is about 5mm away from the bed corner on each side).  In Repetier Host, I think I have the print bed size set up correctly.  The "usable" area is correctly indicated in the GUI, and verifiable by moving the print head to the four corners.

In Slic3r, I set the print bed center to the XY coordinate of the center of the heated bed, as reported by Repetier Host.  The bed size is set to the usable size.  

The problem is my prints still don't start in the center, even when they are centered in Repetier Host.  Any ideas as to why this might be?

Thanks!

[Misha]

Did you set your correct bed size in the firmware as well as in slic3r?  That would be the first thing to check.

[copperclad]

Hi
I was having the same problem . There are three places to set the bed size

in Marlin  firmware
in Repitier-Host
and in Slicer

They all have to match each other for bed center to work , HTH

[Paul Nelson]

Should all of the dimensions be the same,  even if the usable bed size is smaller than the maximum xy coordinates?

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[copperclad]

Hi
With my setup , the bed lacks full travel in the Y axis , and with the clips my X can only travel 190mm so my X and Y end up being 190 X 170.
I set my Marlin firmware to 190 , 170
I set slicer to 190 , 170 , with  ( 95 ,  85 ) as the center
and I set Repetier-Host to 190 , 170

HTH



On Friday, April 12, 2013 6:03:40 AM UTC-7, coreformula wrote:

[copperclad]

Hi
I had my firmware and slicer settings set as above for a while and thought that everything was working fine , until a few weeks ago when I went to print a 165mm gear and that is when I realized it was still centering the print on 100 X 100 .

I checked the firmware and the slicer settings and they were set as I thought , so after some head scratching I went through all the menus in Repetier-Host and saw the bed setting there were still at default of 200 X 200 . Once I changed theRepetier host  to 190 , 170 the center shifted to 95 , 85 and all was good.

HTH

[JohnD]

It's pretty important to remember if you are using Repetier Host with the integrated slic3r, Repetier effectively plates the parts on the bed before sending to slic3r - so it's important to have the Repetier bed size properly defined as you noticed.

Also, there is something weird with the older versions of repetier where it "breaks" the STL's as it exports to slic3r - loads of discussions around that, but I'm not sure tehre was ever a concise answer.  Now that Repetier has added additional STL analysis to Host, this may be a thing of the past....

[Paul]

I think I ended up getting everything centered.  Thanks guys!