SOUNDING FOR BEGINNERS
Requirements:
Proper tools: 5-6mm hegar dilator completely made of stainless steel (they come in singles and also sets with different sizes). Silicon dilators work also, but it’s hard to tell which one is good without trying (some have a rough and sticky surface which you should avoid, because it will irritate the urethra).
Medical alcohol spray and alcohol wipes for disinfection and something to boil the sound with
Water based sterile lube (K-Y, Surgilube, Endosgel, etc.). They come in seprate single packs, syringes or tubes. Single packs and syringes are preferable, because tubes might get contaminated.
Understand your anatomy. The usual urethra diameter is 6mm with strictures right under the glans, base of penis, prostate and bladder sphincter:
https://www.centerforreconstructiveurology.org/wp-content/uploads/2018/07/MaleAnatomy_midsagital_000.png
Shops:
https://www.thechaingang.com/adult-adventure/male-body-jewelry/urethral-sounds.html
https://siliconenozzles.com/collections/sounds
https://www.schoepfersreiz.de/
https://www.chirurgische-instrumente-shop.de/chirurgische-instrumente/sonden-und-dilatatoren/
Tutorial:
Drink more than usual before and after to flush lube and possible bacteria out. I advice to drink camomille tea, because it has antibacterial properties.
Clean your new sound properly under flowing water and use soap to get rid of possible oils and fats that might be on it.
Disinfect the sound by boiling it for up to 15 minutes.
Disinfect your hands and your urethra opening by spraying medical alcohol on it and using a alcohol wipe (gets also rid of possible particles from clothing, etc.).
Boiling should be enough but I reccommend to also use medical alcohol to additionally clean the sound before insertion. Never touch it in the area you want to insert or lay it down on a surface that isn’t disinfected before insertion or you will contaminate it again.
Put water based sterile lube on/into urethra (depends what you use) and onto the sound
Insert the sound carefully, never force it and don’t put it in too far at first. Remove it, if you’re uncomfortable. Don’t insert it farther than the base of the penis. It should not hurt.
Once you are done clean your tools and take a leak
Important:
Proper hygiene and disinfection of your tools is a must or you might get an UTI, that might also travel into the bladder, which if not treated with antibiotics, in the worst case leads to death (sepsis)
Be carful, take your time, never force anything, or your urethra might tear
If you still tear something or have an infection go to a doctor
A burning sensation while peeing afterwards is normal the first few times
Don’t use cheap tools or stuff you have lying around at home. Also don’t use metal sounds, that aren’t complely made of steel. There are some that look like polished steel, but have a metal coating, which might break off. Use only silcon sounds with a smooth surface that’s not sticky or rubbery.
Only use tools, that are made in one piece. Stuff may break off or it might be difficult to disinfect properly.
Don’t use sounds that are too thin (you might puncture your urethra) or too thick (you might tear it)
DEEP SOUNDING
If you now have some experience and know what you are doing with shorter rods, you might want to go deeper.
If you do, just be clear that you will enter your most sensitive area down there which can lead to great joy, if done right, but also might lead to great misfortune if done wrong.
With longer sounds you can play with your prostate, which can feel like a constant orgasm and also enter the bladder, which also feels great.
Be sure to do this properly. Everything I’ve written above in the „SOUNDING FOR BEGINNERS“ section applies here, doubly so. So read this before continuing, if you havent and understand all of it.
For this you need sounds that are long enough. A length between 25 and 35 cm should do, unless you have a longer penis. There are multiple shapes, depending on how deep you want to go and what you want to do.
These are:
Pratt: mostly straight double ended sounds with different diameters, slightly bent on ech end. Those are good for prostate stimulation, because you can apply pressure to certain points of the prostate. Angle your penis according to the shape of your urethra the further you go in. It's possible to go into the bladder with those, but you have to bent your cock really far forwards, which might not be good for the ligaments, if you're not used to it.
Van Buren: slightly curved on one end (more ore less depending on model). With those you should easily be able to enter the prostate and get close to the bladder spincter or directly into it, if you angle your penis accordingly. But I would only do this with the ones that are more curved, unless you know what you're doing. While inserting or removing curved sounds your cock should not be hard, or you may break your penis.
Guyon: these are the best ones, if you want to go straight to the bladder, because of their larger curved shape. And you can also play better with your cock while the sound is completely inserted (you don't need to angle your cock as far forwards as with the other ones). It's best to insert and remove them when your penis is flaccid. Never ever insert or remove them when you have a full erection.
Silicone: you can't do much wrong with those, because they are flexible and follow the urethra naturally, as long as they are not too stiff. Usually you don't need to angle your penis in a certain way to get them in completely and it doesn't matter if you're erect or not. They might be difficult to insert, because they are wobbling in every direction. So if you need to touch it in order to get it in, do it with a sterile glove or put a alcohol wipe around the part where you hold it.
Bakes: these are the thin wire-like ones with a bigger sphere at the end. I wouldn't use those, because they are made in two parts. Never trust a sound where the part you enter your urethra with may brake off or unscrew itself. Also while they can be bent to whatever shape you like once you are in far enough, they may bent in different direction. Just annoying.
Of course there are also other shapes and materials (if have some made of silicate glass) and some might even make it possible to enter the ejaculary duct, which is what seemingly happened to me. But this is one of those things you probably shouldn't do
Important
If you didn't, read the "Important" listing under "SOUNDING FOR BEGINNERS" -> never force the sound in, etc..... do this first and understand it, because below are just additional infos and I don't want to repeat myself.
Just because you can take bigger sounds 15-20 cm into your urethra, doesn’t mean you can take the same size going deeper. If there’s an area in your urethra you’ve never been before start with the same diameter as you did when you started with sounding. Then slowly work your way up in size if you want to.
The urethra has a (additional to the one under the glans) narrower parts at the base oft he penis, the prostate and of course theres the bladder spincter. Be especially careful in those areas.
Your urethra makes a curve from the base oft he penis to the bladder, almost like a „U“. Look at anatomy pictures and adjust the angle of your sound according to it’s shape and position of the tip while inserting, or else you might puncture your urethra. If you want to use metal sounds the deeper you want to go, the more curved it should be (Guyons are great for entering the bladder). Silicone sounds are usually flexible enough, that you don't have this problem.
It's possible to enter the bladder with a straight sound, but you should know what you're doing.
If you want to enter the bladder, you have to be aware that by doing so you might loosen your spincter muscle permanently to he point that you might get incontinent, if you use sounds that are too thick. Start at 5-6 mm. I’d say never go over 10 mm. You know that you are at the bladder spincter when you have a similar feeling like you have when you have to pee. Then it's time to relax as good as you can down there, to insert the sound easier. You can also relax the muscle by trying to pee a little, then the sound shoud go in easy. Never force it in.
If you don’t disinfect everything properly and enter he bladder you will get a bladder infection. If the infection travels to the kidneys and don't go to a doctor in time it may lead to sepsis and death.
Never ever use a sound that's so long that it folds itself in the bladder, because it may knot itself and you will never get it out. If you have a normal penis length the sound should never be longer then max. 40 cm, better 35.
As usual if you have some additional info or if I've forgotton something/have something wrong, please let me know and I will add it. This is all based on my own experiences. I am no doctor and can guarantee for nothing.
NEXT UP: Stretching tutorial (when I have the time)