neptune:
You need to find a good master - turner
They often work with brass.
He will make an excellent plug in your size.
And it will cost a 1 bottle of vodka or whiskey

HI
some plan .pdf for V1.0 inner reactor built this WE.
I am looking now for sand: i got some 200g sample of swimming pool sand at Casto (hardware supplier in France) : minimum 5% silicea (SiO2 = quartz) is garantied on the bag (10Kg for 8 Euros!!).
It looks similar with sand shown on TT videos.
I think sand used for swimming pools is from the same source in Europe.

Any ideas or reference  ?

Kind regards

@ Crock31 , As you have already built your reactor , why not do some initial tests with it as it is . after all , you do have some brass separating the inner and outer tubes , and at this stage nobody knows just how much bbrass is needed .

Hi all,
Thanks Erdtaucher,
that sent me from his quartz sand to make comparison.
I did end-cap of brass as Erdtaucher.
Measured voltage of the reactor after molding is 2,47 volts AC.
But fans did not manage to turn.
Perhaps this is due to the fact that I have not strictly complied with the reactor size.
I will make new reactor following the instructions.
Attempts continue...

regards  madsatbg

Hy madsatbg,

I hope the sand I´ve sent you is working well in your reactor. I compared the sands and the sand from you works better.

I´m looking forward to the weekend, than the dowser will come and looks for paramide places, than we can make real compares 

The time till the dowser comes, i will do funny things, look at the picture

Thank you A.KIng21 for your info,

you are right, the best way for us is to replicate EXACTLY what TT has done, then after variations and experiments could be done.
OK, I keep my first version apart for future experiments (my upper cap is not very good anyway) : my 1m tubes ( 3x33cm) allows me to build two other versions.

Two things i noticed in the TT design:
- on the bottom side of reactor the brass (=copper+zinc) cap is soldered ( =copper+tin solder  + lead if not RoHs compliant or some silver if RoHs ) on the inner copper tube: this is a good electrical contact
- on the top the brass cap is just inserted to contain the sand (without compression not to change its structure) and fixed with adhesive tape only: not a very good contact if we take into account copper or brass oxidation.

It would be nice to avoid any soldering (to build easily the inner coil and trim the coil center).
I wonder if using a brass screw (soldered  on the outside of the brass cap)   and bicone on  to mechanically maintain the inner tube is adequate ?
In practice bicone will make a good electrical contact with copper: it is ok for the bottom edge (replaces the soldering the inner tube) if electrical contact is the key of success (not the presence of the others metals: tin+lead or silver).

Regards

Hi Matsatbg,

your multimeter show 2.479V AC.
For conventional physics it is very strange and unbelievable:
- where is connected  the ground of the multimeter ?
- what is the shape and frequency of the signal?
We must be very carefull with such high impedance measurement tool (>10Meghoms): it can collect anything from parasitic line grid effects.
Have you done the same measurement in different inner reactor conditions and same external conditions:
- reactor empty: no sand
- reactor filled with same sand but not activated
- reactor filled with same activated sand ?

Regards.