This pen was created by my friend and great inventor Perinski many years ago.
After many years, the 3D printing industry has taken a big step forward and now we can do without gluing, sanding and other activities that require knowledge, tools and our time.
I have made edits to this model so that after printing there is no need to sand and glue anything else. All you need is to put the magnet and screw the cap on.
I also want to note that this pen turned out to be very ergonomic and very well fits in the hand. That's why I did not make my own version, and paying tribute to the author Perinski only changed the way of placing the magnet.
I used two 10x4mm magnets here is the amazon link,
And also I would like to tell you that I recently started a small store on Etsy.com here will appear instrementy and exclusive projects that will not be in the open access.