[quote=sai86,Jun 4 2013, 01:13 PM]
bex9432 sry to disturb you again, but i would like to know how u cut the back(lock?) (the side which u stick it to rx100) of the step-up ring. from your pic i saw it's stick to it, but i would like to know the details as well as type of tape u use.
i tried to find scotch clear double tape previously, but i can't find it even in ACE hardware shop

oo, u walk in. i thought u do online purchase. thxs. i ady sent them inquiry.
btw, how do you cut the back connector of the step-up ring?? using machine saw?[/quote]
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1) u need to flatten the bottom part of step ring using below item.

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ImageShack.us2) Then u need to find double sided tape (the thick one) due to its not easy to make it really flat. So, the thickness of tape will compensate it

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ImageShack.usp/s : warning, the tape quite strong and not easy to remove. Use fishing line if you want to remove it if you got better option (magfilter) or looking to increase the size.