markjme

I have been having a build plate adhesion problem on my 2+ despite many levelings one back corner always tends peel even with PLA. Glass thoroughly cleaned or using glue or tape does not resolve the issue and even this print a quick pit of tape was used that became part of the print. Brim did not help so tried raft which we can agree was a problem especially on such a large area. I have rotated the glass to eliminate that as the problem. Sure I will resolve this build plate level problem. On the plus side printed for 17 hours.

Still 10 hours to go on this print but so far have been printing for nearly 8 hours and all ok. Thank you gr5 and slashee

Thank you gr5 and slashee. Also happened without using a raft. Single island part with a large footprint (140x88mm) Teflon part looks ok. Now cleaned everything and re levelled and i'll see what happens. Still think my fan is the problem. I guess I will know in the next hour.

Hi gr5 With PLA I am never tempted to stray from default settings. 1) Yes PLA softens in the Bowden tube and jams. 2) Yes Layer height: 0.15 Print speed: 60mm/s *Line width:0.35 * I am using a Raft which I can see hs different line widths, base=0.8, middle=0.7, top=0.35 With Move material it takes about 7 seconds. I did replace the nozzle already as I thought this maybe the cause. I agree the problem is in the all in the bowden tube to extract the material I have to remove it at the print head end which is why on a coulpe of occasions I failed to insert it far enough.

Hi gr5 Fan still spins but i expect the output is low. Fan is always on even below 60C. I feel sure the problem lies here. Thanks for your help, very much appreciated. Mark

Hi gr5 Now tried twice printing the same file twice. Both stopped extruding material. Cannot perform a remove material as the drive cog has eroded the filament away. Cut the filament and removed the bowden tube both ends. Photo below. It is clear that although the bowden tube was fitted correctly at the nozzle end and material could not be backed up the filament has still swelled inside the tube and jammed. I do have a noisey fan so maybe not cooling the rear of the extruder head sufficiently? Of all the recent failed prints only 3 had the crunched up material.

Thank You gr5 Over the years the bowden tube as cut up from the knives and as a result when I measured how far it was inserting it was falling short. Had to cut off about an inch off but now seems to be fully home. Back printing so fingers crossed.

Printer: Ultimaker 2+ Material: Ultimaker tough PLA (but have tried different materials) Problem: Material ceases to extrude leaving only the first few layers printed. Cannot remove the material without dissassemby of the print head where I find that material is folded at the back of the nozzel which is why the material cannot be removed. The drive cog ultimately wears away the filament. There would appear to be a mismatch between the filament feed and the rate of extrusion. This has happened on the last 5 prints which have all been unsuccessful. Actions taken: 1) All the drive cog has been dismantled and cleaned. 2) Replaced nozzel 3) Tried using an earlier version of Cura 4) Reset to factory settings on the printer 5) Installed latest Firmware 6) Tried printing other files (same result) In photo the bottom of the filament is from the nozzle, the knot is from the back highlighted in red. Any suggestions please.