Hi bro.. I know this question was asked a year or more ago.. So, I hope things have been going well for you since this was first posted.
In the meantime, If you still have questions - There is a lot of good information on thechaingang blog.. Here is a link to their site (https://www.thechaingang.com/blog/a-beginners-guide-to-kinky-urethral-sounding/) ..and hopefully you will gain a little more knowledge to help tweak some areas you might possibly need some help with.
Agree with all of pubeless1’s advice. Don’t rush and start slow. Too much or too fast and there will be a little of the red stuff. A little is ok and may be expected when stretching the choke points in your urethra. Sorry if I’ve put you off, but this was my reality…
and go slow. You should make sure that anything that goes down your cock is sterile and your hands are really clean. use KY lube, and plenty of it. I use hand sanitiser on my hands beforehand and use it on the sound too to be sure it is sterile. not nice if you get it down your cock though. squirt the lube directly down your cock then the sound will slip in easily. start small and then try bigger. I have only just got back into it and use a 9mm sound and that is quite tight. I did get up to 11mm a few years ago though. Good luck.
In the meantime, If you still have questions - There is a lot of good information on thechaingang blog.. Here is a link to their site (https://www.thechaingang.com/blog/a-beginners-guide-to-kinky-urethral-sounding/) ..and hopefully you will gain a little more knowledge to help tweak some areas you might possibly need some help with.
Take care of VAT and so on - my actions were free .
squirt the lube directly down your cock then the sound will slip in easily. start small and then try bigger.
I have only just got back into it and use a 9mm sound and that is quite tight. I did get up to 11mm a few years ago though. Good luck.