Below is my original method - it shows how you too can do super macro with lenses you already own. - my current method now is 400mm and 11-16@16mm in reverse.
---------------
This is my recipe - substitude as appropriate for your taste and flavours). Theoretically following this recipe you should be able to get a magnification in the order of 11:1 to 12:1
Ingredients:
1 Camera
2 Lenses - A long one (macro is best) and a short one in terms of focal length
1 1.4x Tele-converter (TC) - this is optional (the 2x is still in the snail mail )
1 Mouse
1 Cork - Preferably from a bottle of sparkling wine, they are more stable.
2 Clothes pegs
1 Match box
1 Tea towel
1 table lamp
1 Coin
1 knife
and 1 Table
Putting it all together:
Sample holder
---------------
Take your cork and cut a slit in it with the knife. Place your coin in the slot.
Lighting
-----------
Place your table lamp somewhere so its cable is close-ish to the sample to be imaged but not so far away as not to be able to plug it into a power socket. Place a tea towel of the lamp to diffuse the light.
WARNING: Do not place cloth over the lamp completely - just hang it off the front - We don't want he bulb blowing and we certainly don't want any fire. Fires may give some nice mood lighting but this is macro, mood is optional.
The camera setup:
---------------
Place the TC on the camera and the long macro lens on the TC. Place this on the table by using a clothes peg and matchbox to keep it level. Place the short focal length lens in reverse onto the long lens (In my case a Tok 11-16 @11mm onto 90mm Tamron) stabilise using the remaining peg. Use the mouse to stop the short lens from rolling away.
So what does this look like:
Result
---------
So here is a sample shot.
This image is about a 70% crop of the original, no sharpening has been applied. You'll notice that lighting is very important and could be improved upon - an extension cord would be one way. Bright leds all around the the lens would be another.
The lens alignment may have also contributed to the light fall off. An extra mouse may have helped here.
Conclusion
-------------
Not bad for 10 min work if I must say so myself (and I must). And remember substitute the ingredients to what ever you have at hand and is currently on or near your table.
Signing off, tongue firmly in cheek.
Subby aka hqqns
More you learn the more you can forget.
, I shot raw so easy enough to fix. 
