cor3ys

I bought mine from a reseller here in the UK (imakr) and Ultimaker have given me full support for my machine and sent replacement parts free of charge just like they would have if i had bought it direct from them.. This is one of many departments Ultimaker shines in they support there machines 100%

Have you read GR5 post in this thread ? is more related to a blocked nozzle http://umforum.ultimaker.com/index.php?/topic/4118-blocked-nozzle/?hl=%2Bremove+%2Bbowden&do=findComment&comment=33691 I have stripped my head down but i did not have Filament stuck in the system you should remove filament before dismantle i think. All i did was remove the red clip on the bowden retainer Push down on the grey retainer and pull the bowden tube out (how this will work with filament in it i dont know) Remove the 4 screws that hold the fan shroud on. 2 each side You need to unscrew the back fan 2 screws Then unscrew the 4 long screws in each corner, (i stick some tape on the black housing so it did not fall apart.. i only removed the back 2 long screws and left the front 2 in place so the black housing did not fall down... Remove 2 screws from the aluminum block this will give you access to the spring and white Teflon be careful if you remove the Teflon i broke mine it was jammed in the nozzle hence i had to replace mine... you will now have the aluminum block with the nozzle in it free to look in... There is some pics in this thread page 4 by Chrisp of the head dismantled http://umforum.ultimaker.com/index.php?/topic/3976-almost-always-missing-layers-underextruding/page-4?hl=%20strip%20%20down%20%20head There is lots of pictures through out that thread as lots of people have been stripping there heads down should give you an idea.... hope that helps in some way

Can you heat the nozzle up to 200 and push the filament through by hand now you have removed the feader ?

Oh thats not cool at all, i had under extrusion but mine was fixed with a new Teflon bit, i documented it in Nicolinux thread but it seems thats not a fix for all as a new Teflon did not fix Nicolinux under extrusion issues... Really frustrating i know....

Woofy LOL i printed 3 arms at a time at 0.2 speed 60 and printed 4 hooks at a time same settings, should have a spool printed in no time :-P

DonMilne Have you checked the feeder on the back of the machine, check if you have ground down the filament so much that it will not reveres past the knurled bit if you have you will need to give a big tug on the filament when its in reverse or take the cover off and heat up the nozzle and pull it out by hand... Just my 2 cents worth....

Woofy/Skint Find files for the spool holder and the hub, i still needed to make some spacers to go on the shaft so the filament holder did not move back and forwards into the holder.. Also you might want to increase the height of the bottom or the top half of the spool holder, as i had very limited space under my UM2 table so i made it as small as possible.... https://www.dropbox.com/s/0s3wey3a70r6zkj/Spool%20Holder.zip

Skint Yes it is a web browser based software import the STL and modify it, its a very basic system, i am not a 3d designer or anything unfortunately, I have only been into 3d for a few months... The files for the holder, i will provide the raw files and i used 123d Design again that is a web browser based but i could not get it to work in my browser so they provide a free download of the software as well which i used. Both by Autodesk (tinkercad.com) (123dapp.com/design) Shame about the black, I got 100m black from them on Tuesday :-P

Excellent that's great, i also assembled mine using m4 x 25m nut and bolts from Homebase....

Hi Woofysplace/Skint This is the filament spool i used from https://www.youmagine.com/designs/adjustable-heavy-duty-filament-spool picture only shows 3 arms but you can fit 6 like mine, all i did was take the center piece (hub) to tinkercad and made the center hole size to my requirements.. The spool holder i designed myself i can post that up for you when i get home...

Unfortunately you will have trouble getting it on a normal spool the inside diameter of a faberdashery spool is much larger than a standard spool your looking at about 10 -12 inches. it would just spring open that's if it did not snap trying to wrap it round a standard spool which is about 55mm diameter..

Skint Yes a bit of pain handling it as its not on a spool, but i now have four of them spool holders printed so i have pretty trouble free experience with it now, Some use a lazy Susan and other methods if you read through the forum... I buy mine direct from Faberdashery and they always throw in a sample of a different color to try out, they do next day delivery or royal mail if you don't mind waiting a few days for a bit cheaper... I also have a few spools from colorfabbs which i also buy direct from colorfabb.... Yeh i found Imakr more expensive so i don't use them, But i did buy my UM2 from them back in October like you :-P

Hi Skint I can recommend Faberdashery Filament, i just took another delivery of 500m this week :-P It also works out a lot cheaper to buy 100m at a time instead of by the meter like i was doing.. Remember it does not come on a spool... i made this for my Faberdashery filament

Spot on Lennart yes 0.06 about 19 hours print

My latest print of a dragon From Thingiverse http://www.thingiverse.com/thing:246198

Hi Ian No unfortunately, still a mystery and has put me off getting any more XT. here was my original thread http://umforum.ultimaker.com/index.php?/topic/3455-um2-glass-bed-meltdistorted/

IRobertl i had the same thing posted pictures long time ago in another thread, my glass was pulled away and was left on the bottom of my print using XT bed temp 60 23 hour print. it looks like the material is on the glass but it is not all the areas are sunken... Edit: i did not use glue stick looking back at my thread..

Nicolinux Did the retraction test for you as requested, using fabadashery at 230 using my own spool & holder. i could only get to 9mm using ultimaker filament on the spool holder on the back.

Hi Aaron If you mean when i got my ultimaker back in November, then no not really depends on how you gauge long though, i was doing small prints of about half an hour to an hour and a couple at about 3 hours if remember correctly over a 2 day period. then i boxed it up and sent it back to Imaker for repairs... But i like your thinking as it did not cross my mind, i assume you think due to the 3rd fan not working when i first got it, this could have caused the Teflon to get burnt and jammed/stuck in the nozzle retainer. I would have thought i would have suffered before now though as its been a good few months since and i only suffered from under extrusion over the last couple of weeks , but who knows :???:

Hi Guys About a week ago i was getting under extrusion printing at 0.2 with a temp of 230 speed 50mm, i was also getting filament stuck at the hot end when doing a material change. I stumbled across this thread and decided to give the test ago that you was all doing and i could only manage to do 3mm and 4mm bands and as soon as it hit 5mm i got massive under extrusion.. At this point i thought i had a blockage and decided to strip down my hotend, when i tried to remove the white teflon it was well and truly stuck and it fell apart ( i don't know if it was like this already hence my under extrusion or happened when i pulled it) I then heated the nozzle up to try and loss en it but i was still unable to pull it out... I then removed the retaining screw for the nozzle and had to force it out with some force from the other end, it seemed to be well and truly stuck.. I have been waiting for a replacement Teflon (PTFE) That Sander kindly replaced for me which was due to be delivered today so i have taken the morning of work to get it all back together again and wow i can now print the full test print with no under extrusion first time... faberdashery at 230 Measurement of old Teflon Measurement of new teflon

Hi Guys Just done a test i'm using 14.01.02 the error seems to come when you do a material change.. I just done another material change and straight after the change i went into advanced menu and selected move material and all it did was heat the nozzle i can not move the material... When i turned the machine off and back on then went into move material it then worked so it seems (at least for me) after change of material you can not go in and use move material straight away without reboot of the machine.. Hope that helps in some way... P.S. i could not get it to repeat the error where when changing materiel when the material hits the nozzle it stops feeding instantly which i have had happen twice over the weekend (which led me to discover not being able to move material straight after material change)

Hi Dgsharp Yes i have also noticed this for the last couple of days, I did a material change and once the material hit the nozzle the feeder stopped feeding so i then went to manually move material in the advance menu and nothing, all it did was heat up the nozzle but i had no movement of material when Turing the wheel. i had to start my print wait for material to come through then abort the print once the nozzle was primed and start the print again due to no manual way of moving material.

Hi Aaron You will find the vase here http://www.thingiverse.com/thing:104694

Hi Das Not sure where you can get a replacement fans there was a thread a couple of days ago discussing this dont know if that helps http://umforum.ultimaker.com/index.php?/topic/3778-letting-ultimaker-2-sit-hot-for-hours-creates-block-in-bowden-tube/?hl=sunon&do=findComment&comment=29570,%C2%A0%20i%20have%20a%20left%20fan%20that%20resonates%20through%20the%20sheetmetal%20so%20i%20got%20some%20longer%20screws%20and%20made%20a%203mm%20spacer%20so%20the%20spacer%20dampens%20the%20vibrations%20which%20works%20a%20treat%20zero%20noise%20now..., i have a left fan that resonates through the sheetmetal so i got some longer screws and made a 3mm spacer so the spacer dampens the vibrations which works a treat zero noise now... As for a spool holder i printed this https://www.youmagine.com/designs/adjustable-heavy-duty-filament-spool#!design-embed%20and%20took%20the%20center%20piece%20to%20tinker%20cad%20and%20put%20a%2050mm%20hole%20in%20it%20works%20a%20treat%20with%20my%20Faberdashery%20filament.. and took the center piece to tinker cad and put a 50mm hole in it works a treat with my Faberdashery filament..

My latest print !!!!!!! from http://www.thingiverse.com/thing:151251