Eclipse, Pecpads, credit card.
Have done this myself with superb results. Just take it slowly. There's minimal risk as long as you take your time.

Lighter fuel has been highly recommended elsewhere.....the residue evaporates very quickly.
I haven't tried it myself - or anything come to that.
Sensor(s) are still quite clean and I'd be worried if I ever had to do it myself.![]()
I bought a used D3 this week, the camera is mint but I think he's been changing lenses in a potato field as the sensor is minging.
Make sure it's Eclipse 2 and not the standard Eclipse.
I wouldn't trust a lens pen type thing for that - do a wet clean.
Never had to wet clean either my A900 or my D700 - apparently the D3 can get oil thrown onto the sensor which is could be what you are seeing.
Eclipse, Pecpads, credit card.
I don't know what exactly it is or why it's there, just that you need to be aware of it.
Eclipse, Pecpads, credit card.
is that incase you knacker the sensor & have to buy another 
The first two I understand their use but a CC :shrug:
is that incase you knacker the sensor & have to buy another
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You beat me to it!The first two I understand their use but a CC :shrug:
is that incase you knacker the sensor & have to buy another
You beat me to it!

Glad I wasn't the only one then![]()
Cut the card to the size of your sensor,wrap the pad around it, drop some fluid on it,clean sensor.............![]()
The first two I understand their use but a CC :shrug:
is that incase you knacker the sensor & have to buy another
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I can finally put all my old oyster cards to good use.credit card.
Yes thanks, found it and ordered a batch from Amazon. Let's see if the HPLC-grade Methanol from the lab is as good as Eclipse.Got my pecpads from amazon (think it was £10 with prime delivery, probably eligible for super saver?).
Have a look onto the sensor with some light (don't blast it too long though). The reflections will probably tell you whether it is a scratch.I really hope it's not a scratch, the camera is mint with 7500 clicks![]()
I've added a pic showing some of the crud, i've just had a good look at the sensor and there's what appears to be a scratch about 6-7mm long, the effect can be seen in the pic I took on saturday just behind the cockpit
I really hope it's not a scratch, the camera is mint with 7500 clicks
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You cut the credit card to appropriate size, smooth off the ends, and wrap the pec-pad over it and tape it down.
It's no different to the old "Wendy's Knife" method. You're just making your own device for the pec-pad to wrap around.
http://www.pbase.com/copperhill/image/39082096
Edit : Oops, didn't see Fracster's reply.![]()