@drifand Thank you! I shortened it to 9.4 cm but noticed a little axial play (not that it was loose, but it moved back and forth when pushed). So I made another one with a length of 9.5 mm; that fits tightly. – I like the 0.28 Jetstream from time to time and also use 0.38 and 0.5 (luckily they are all interchangeable) but as a mechanical pencil with 0.3 mm, the Edge is particularly appealing 
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