I am posting this in the commercial sellers spot, LOL, I feel important! 
Despite this, there is no profit, I sell them because I like to see people to try out my custom springs, and it limits the damage a bit :-)
For sale: custom made phosfor-bronze compression springs (spring factory: Tevema, Amsterdam).
wire thickness: 1mm
ground diameter: 10mm
top diameter: 7mm
height: 15mm initially, 13mm from first compression on.
In short: these springs have about 3 times less resistance as steel springs of the same dimension, so less power is lost in your flashlight. The mechanical properties are good, the stiffness is slightly less than a steel spring but I would still call it a stiff spring. I did not notice any loss of tension after half an hour 6A current. The resitance is low, but certainly not as low as a 'copper braided' spring, for really high current single li-ion flashlight mods where every mV counts, these springs are not the ultimate solution (but you could still copperbraid them :-) ).
price and shipping
I will sell them per 5 pieces, for $0.70 each (so $3,50 for 5), in a small bubble-mailer. Up to 15 springs the shipping costs are $1.70 worldwide, more than 15 (=package of more than 20 grams) will be $2.70. I will provide no tracking or whatever other guarantee (it is not exactly expensive what I sell here), I promise that I will send them and just hope that they arrive, and without too much delay. If your situation is really pitiful 
, I will resend your springs, but only if I have some leftover.
Are these springs expensive?
-no, they costed him $1 a piece, so he even lost money on them
-yes, if he had 2500 made instead of 200, the production costs would probably have been 25 cents/spring instead of a dollar
-no, this is exactly the spring that I always wanted for my ultimate mod, they are priceless ;-)
Please note: 10 mm ground diameter is quite large, these springs will not fit everywhere, please measure before you buy these, e.g. I have a 17mm tail switch board with a 9mm diameter central pad, this spring will fit without shorting to the outer ring, but not by much.
How do I order?
Please reply in this thread how many you want, followed by a PM with address and such, I will give you my Paypal-address then. When I recieved the money I will send the springs, hopefully within a few days. In case the interest is very high: I will keep 20 springs for myself, so 179 springs are for sale.
I hope this way it will work out well, it is my first time selling things, :beer: , djozz
