Yes, practice makes perfect. I work out every 2 days for about 1 to 2 hours by Hegar dilator. Of course, a Pain Relief gel is helpful for a diameter increase. I use Xylocaine gel 2%. Then of course you have to be careful that you do not increase too fast, because you can hurt yourself otherwise, because you feel less pain. So slowly increase the diameter. The only way I can take the next leap 0.5 mm in 2-3 months. Meanwhile, I'm at 18 mm, I started at 6 mm diameter. A 12,5 mm diameter and 19 cm long Hegar dilator I get past the prostate. Very pleasant feeling, then I can masturbate just fine. There are in the urethra into the bladder on the way three constrictions. The first is the lack of space which is located on the gloss side at the level of the frenulum approach. The second bottleneck is at the entrance prostate and prostate. The third bottleneck is the bubble entrance.
https://www.google.de/search?q=Harnr%C3%B6hre&biw=1920&bih=877&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjTrL2kx9_NAhXDthQKHVK4D9sQ7AkI
Stretching the external urethra and the urethra are 2 construction sites.
The Meatus urethrae externus is best stretched with a penis plug with longitudinal bore. So that the plug can remain permanently inserted. Method. Insert a plug that just enters the meatus into the fossa navicularis urethrae. After about 2 weeks the plug will go out easily. Because the meatus has stretched due to the permanent stretch. Then you can import a 0.5mm larger plug. After 2 weeks the next and so on. With this method I can now introduce a 18mm penis plug.
To stretch the urethra from the fossa navicularis urethrae. It is best to take Hegar dilators for approx. 19cm long which can be easily inserted through the prostate. Residuals during insertion can cause some urethral strictures (strictures) and the prostate entrance These disabilities must be passed carefully to avoid injury. Cleanliness is absolutely important to avoid infections. Disinfect the dilator and a sterile lubricant is necessary. I use Xylocain Gel 2%. This is called then Sounden. After frequent use, the urethra will become accustomed to it and the initial impairments will no longer occur, so that the pleasant feelings will prevail. After some time you can use the next 0.5mm Thicker Dilator to stretch the urethra. How fast you can use the next size depends on the frequency of use and on the duration of stretching (1-2 hours), but it is still very tedious. It is relatively safe as long as you do not penetrate into the bladder. Because you can easily damage the bladder sphincter and thus trigger incontinence. In addition, you have no germ-free urine for rinsing the urethra more. That's why I usually only sound through the prostate and do not invade the bladder. With this method I have been able to insert a 12.5mm. The urethra makes a 90 ° angle to the top of the prostate, which can be easily passed through a Van Buren dilator, a flexible dilator, or a catheter to reach the bladder. It is also possible with a Hegar dilator but because you have to push the penis down.