Experiments with making a home-made vacuum tube...

Just THE TUBE!..

I found a bit of 4 cm dia uPvC waste pipe in my stockpile, cut a piece about 18 cm long off, trimmed one end in the lathe, and fitted a round block of plastic, into that end. Then I heated the other (open) end with my blow torch and while it was hot, pushed the softened plastic over the largest socket spanner that I have (3.2cm, I think, didnt look) this belled the end out nicely. Then I trimmed that end and smoothed it with some fine sand paper. I then tried to get my cock into the pipe. Mission difficult, as my semi erect cock (from all the attantion) is bigger than 4cm in diameter!

So I thought lets try how my cock feels with just a ring of plastic on it. Out with the hacksaw, I cut another section off the old piece of waste pipe, about 5 cm long, smoothed it up nicely on all surfaces, and then offered my penis into it. It went in far enough so that I could grab my foreskin, and pulling on that, with some difficulty, got the ring all the way down to the base of my cock, without scratching my skin. The technique seems to be to get the glance(cherry) to go through, foreskin and all, Then to hold onto the cherry while you pull your cock through the ring GENTLY!. As my cock was a little more than half erect while doing this, I thought that the ring would drop off when it went flaccid. But no way. That ring just stays put! I wore it under my shorts all afternoon while I was in the workshop making wrought iron stuff for an order...

It would seem that I will have to find some other kind of pipe, somewhat larger in diameter to get one that I can just slide my cock into!

The corrugated pipe from an automatic pool cleaner is too small, I tried it years ago, when having a moment fooling with fettishes...

Later that afternoon, I tried how the plugged pipe would work if I used some Vaseline for a lube.. I couldnt get my flaccid cock in there, as the pressure of the air trapped in front of my penis was too much, so I put a firm walled, 4mm flexible tube beside my cock as I pushed it in, so as to educt the air. All that happened was that my foreskin rolled back, and my cherry stuck to the tube. After withdrawing and putting more lube on my cock, before I tried inserting my cock. I drilled a 2mm hole in the end of the plug to let the air equalise. This time, when I tried to push my now nearly fully erect cock into the tube, my foreskin pulled back as before, and it stuck there like that. Closing the air hole with my finger I pulled my cock partway out of the tube, creating a bit of a vacuum. This didnt feel 'right' either..

I tried fucking into the tube, making the air whistle as it pumped in and out of the hole. On the fourth 'outstroke' my penis popped out of the tube, and now, being fully erect, NO WAY would it go back into the tube. I ended up by throwing the whole lot on the floor. Grabbing my now fully charged, frusrated cock in my fist, I wanked until I shot spunk copiously onto the workshop floor!

Back to the drawing board...

I have been thinking of how I could make a little hand operated vacuum pump, so that when I have the pipe thing 'sorted' I can generate a bit of a vacuum. Though I understand that the reduced air pressure can be dangerous if done too violently and that the amount of time that you are under vacuum can be critical for you not to get hurt..

Till next time, then...