It has been mentioned a few times in different threads, so I thought I might as well try and describe how I make my own cleaning needles for the Primus 1020 (and all the other models with this burner). To start with I use two different sizes of brass tubing. The reason I use two tubes is that I don't have the skills or facilities to drill a small hole in a 2mm rod. I use 1mm outside diameter with a 0.4mm hole and 2mm outside dimater with a 1mm hole. I have purchased them from an online model/hobby shop and they were relatively inexpensive. I also use stainless steel acupuncture needles in 0.18mm diameter, again bought online. Here is a picture of some of the items I use. First off I cut 7mm lengths of the two tubes using a dremel with a cutting disc. I then put the 1mm tube inside the 2mm tube, put in the acupuncture needle, then crimp half the length of the tubing to fix the needle. Next up I hold the tubing in a drill chuck then cut a #2 UNF thread on the non crimped half. Finally I cut off the needle at 2.5mm and it's good to go. A bit fiddly, but the result works and I have the satisfaction of knowing I did it myself.