1 Topic by n2ri

  • n2ri
  • Member
  • Offline
  • From: St Louis MO USA area
  • Registered: 2013-02-03
  • Posts: 2,539

Topic: odd results when printing multi objects scaled dif

I have done multi objects at once b4 no prob but tried 3 dif objects (small) at different rescaling each. the raft support etc laid fine then when about 3rd layer started with model perimeters all 3 foot prints shifted towards left rear of bed about a half inch so had to kill job and redo it one item at a time.

anyone else had this happen? see my signiture for what I use.

Solidoodle 2 with Deluxe kit cover & glass bed with heater. and 2nd board SD2 used not 3rd and alum platform not installed yet still wood. also need cooling fan installed to board. use Repetier Host couple vers. Slic3r also have all free ware STL programs

2 Reply by pirvan

  • pirvan
  • pirvan
  • Member
  • Offline
  • From: San Francisco
  • Registered: 2013-03-27
  • Posts: 1,797

Re: odd results when printing multi objects scaled dif

I don't think that has anthing to do with the scaling of your objects.  I print multiple objects scaled differently all the time.  You can probably verify this by looking at the 3D preview of the Gcode.  Does it look right, or does it have that jump to the rear.  I'd bet it normal.

Your problem is most likely due to some binding, or (more likely) the "Y" stepper glitched (ran hot or something).  If don't already have a fan on your board, put one on it, and put some mini heatsinks on the steppers as well.

To print or, 3D print, that is the question...
SD3 printer w/too many mods,  Printrbot Simple Maker Ed.,  FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.

3 Reply by n2ri

  • n2ri
  • Member
  • Offline
  • From: St Louis MO USA area
  • Registered: 2013-02-03
  • Posts: 2,539

Re: odd results when printing multi objects scaled dif

no it done fine 1 at a time in same spot. maybe something else I was doing on puter caused it to skip to new location. it made no noise just started building in dif area. never had it do that b4 or since

Solidoodle 2 with Deluxe kit cover & glass bed with heater. and 2nd board SD2 used not 3rd and alum platform not installed yet still wood. also need cooling fan installed to board. use Repetier Host couple vers. Slic3r also have all free ware STL programs

4 Reply by grob (edited by grob 2014-11-17 00:14:11)

  • grob
  • grob
  • Member
  • Offline
  • From: Sydney, Australia
  • Registered: 2014-01-02
  • Posts: 900

Re: odd results when printing multi objects scaled dif

Alternatively it sounds like the nozzle is hitting one of those islands cold, and this is leading to missed steps - did any of the individual parts curl or have lumps/artifacts sticking out? Is this repeatable or did it just happen once?

If it happens every time for that particular slice, check the g-code preview. If this looks fine, then re-slice with a different part layout (swap them around, put them closer together, etc.) - it could be the same physical/thermal issue keeps happening due to the order the islands are done in - this would at least change the problem if it is physical...

SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi

5 Reply by n2ri

  • n2ri
  • Member
  • Offline
  • From: St Louis MO USA area
  • Registered: 2013-02-03
  • Posts: 2,539

Re: odd results when printing multi objects scaled dif

only done it one time so kinda hard to pin point. and yes I tried all the ideas posted as that fixes similar issues lots

Solidoodle 2 with Deluxe kit cover & glass bed with heater. and 2nd board SD2 used not 3rd and alum platform not installed yet still wood. also need cooling fan installed to board. use Repetier Host couple vers. Slic3r also have all free ware STL programs