I tried acupuncture needles and garbage ties - both were too fat. Wires off a highly specific metal brush might work, but I would need a link to this particular brush to verify.
hypodermic needles - as they are hollow (so stiff) and you can order the bore size you want. - ebay has a few sellers.
I now own an Olssen block with 4 nozzle sizes (0.4, 0.6, 0.8 and 1.0mm). I love it. Its how the next Ultimaker should be made by default.
It is how the UM2+ are made by default 
- 1 month later...
Just pull out the PLA and cut off the end and push it back again and I have had no problems in a clogged nozzle
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UltiMaker Cura 5.7 stable released
ArunC posted a topic in UltiMaker Cura,
Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more.
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Release Notes: S-Line Firmware 8.3.0 (Latest)
Dustin posted a topic in Firmware,
S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
(Sorry, was out of office when this released)
This update is for...
All UltiMaker S series
New features
Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.-
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gr5 2,167
And hypodermic needles. They work well also. 28 gauge:
https://en.wikipedia.org/wiki/Needle_gauge_comparison_chart
Anyone who orders anything from my store in the USA gets one of those for free (modified so that it can't be used for it's original purpose).
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