to start off, here's mine, a corwin eurocylinder lock:
what i've done is the following.
i made grooves in the side, to be able to see whats going on, cause i had a lot of trouble visualizing what was going on inside the lock. I used a dremel tool with cutting disk for this job, i cut the groove in the cyclinder and the body apart from each other. (there are 3 grooves because i didn't have the time for 5, and 3 is enough to pick for me already

next, i searched the internet for a repinning guide for eurocylinders, found it, but i didn't have those tools ready in my place, so i decided to drill out the little holes where the pins and spring are.
with this setup i can easily remove the tape and repin the lock at my wish, without using a tool to keep the pins down when you insert the plug. the bad part of this experiment is that the tape isn't as strong as the metal before, to keep spring tension i used a couple of driver pins as replacement.
Being able to see whats going on is really helping me in my picklocking learning time, i can reccomend this to any beginning lockpicker!