Rotring 600 Mechanical Pencil Cap

prusaprinters

<p>The Rotring 600 is a pretty nice mechanical pencil from Germany, but they don't seem to come with a cap to protect the tip where the graphite comes out - so I whipped up this printed version. This may work with a Rotring 800 as well but I haven't tested it.</p><p>The Fusion 360 model in the Files section has a user parameter setup so you can change the &nbsp;ID of interior protrusion which grips the knurled part of the pencil body and adjust the ‘grip factor’ of this cap. The .3mf has the ID that I arrived at through trial and error, providing a decent compromise between grip and ease of putting on and off:</p><p>Print Parameters: Prusa Mk3s</p><ul><li>OVERTURE PLA in Red - 1.75mm filament, printed at 205 C on the nozzle with a bed temp of 45 C</li><li>.30mm ‘Quality’ settings on PrusaSlicer, I used a .6mm nozzle because that's what I had installed in my setup but re-slicing for a .4mm would probably be better for this application</li><li>5mm of brim, to ensure the relatively long cylinder adheres to the print bed</li><li>Seam Position set to Random for aesthetic reasons - this isn't really important</li></ul><p>Print time was 21 minutes on my Mk3s with the settings above.</p><p>&nbsp;</p>