figured out why my gallery picture were not showing up (my bad) .. here are the results .. what I did so far ;
Bought an Ultimaker 2 last weekend. Have been playing with this ever since Sunday 15th. After the usuals trial and errors started to succeed in printing some easy models. A 10mmx10mmx20mm hollow tube in (yellow) ABS and a rook from ABS. Some smaller cylinders in PLA all to a satisfactory result.
Then I started to to a dodecahedron (17h print overnight) , previous attempts failed since I did these without support, decided to do a 10cm large model in ABS with grid support. The first layers went fine and I left it running overnight.
Next morning (after around 7h of print from the total 17h), the nozzle was in “free air” about 5cm from the last printed position and no filament was exiting the nozzle. you can see form the picture it already had printing issues long before that point. I aborted the print, and read on-line instructions on how to clean the nozzle.
I cleaned the nozzle by taking it totally apart and heat up the brass block using a “creme brûlée” burning making all the gunk evaporate.. it was truly very clean and unblocked , prior to this I only heated up the nozzle and tried to unblock with the thin wired from a transistor.
After assembling all back together again I ran another print but all seem to fail. in ABS it fails from almost the first couple of layers, with PLA it appears to happened after 100 layers or so. I did up them temp on PLA to 230 the second time, but still no result.
Taking the nozzle apart again and (re)cleaning this .. I took a macro picture of the nozzle and see it has been damaged. It’s hard to believe this was only by using a transistor needle, but still confused about the damage.
At this moment I have started a print all over again thinking maybe t’s the filament that get’s stuck on the roll and now layer down the roll and keep a close eye on the filament not begin blocked.
This print however is already startng to show "grainy" look .. the filament roll is now horizontal and there is no blocking into the extruder, I moved the print speed down from 100% to 80% and the material flow up from 100% to 107% , but no change ..