The Shop > Tools
Another 3D Printer
Jorkki:
Joules,
Just waiting for the same Kossel Mini kit myself (my first), so can't really give any expert advise.
I have used the waiting time to do some reading though and from what I have read, probably the most common reasons are the retraction settings.
Just thinking about it, if it was a mechanical issue, the printer probably would not recover to properly print the upper layers.
If the Bowden tube would be loose at either end, you would probably also have the issue everywhere.
So it may have something to do either with a too large retraction or a positive value on the 'Extra length on restart'.
Alternatively it might be that the printer is doing short moves and retracts before arriving on the perimeter to continue.
It might make sense to test with the 'Avoid crossing perimeters' and 'Only retract when crossing perimeters' settings.
Also putting 'Random' in 'Seam position' might make a difference.
For delta printers I have also seen a recommendation to put a small value (e.g. 0.1mm) to 'Lift Z' if the nozzle keeps catching the already laid filaments.
Hope you get everything sorted soon!
Jorma
Some links:
http://manual.slic3r.org/expert-mode/fighting-ooze
http://wiki.e3d-online.com/wiki/E3D-v6_Troubleshooting
Joules:
Hi Jorma and welcome to MadModders, I finally found the problem and it was the hotend being loose. It has caught on the prints and loosened. I wasn't keen on the method of bolting into plastic to clamp the hotend, so I will either make an alloy part or some little threaded bushes to reclamp everything, and increase the Z lift :thumbup:
Pete49:
Glad you found the problem Joules as I knew the software was good as I had no problem with the print even though I used ABS (black).
Pete
Joules:
And here is my problem, screwing M3 bolts into ABS was never going to be a good idea, but you can't say I didn't give it a try.
The advice to tighten gently :lol: into plastic. It failed in use, I tried over tightening the bolts once I had it out and the difference between snug and pulled out is very small, too small to feel if the delta plate your fixing too is a little tight on the bolts. So, this part is getting a redesign to take an alloy insert that is tapped to take the bolts properly and clamp things firmly.
At this point a cnc mill would be nice.
mattinker:
The thread is far too fine, something like self tapping screws or wood screws work much better in plastic!
Regards Matthew.
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