So I bought an MRP triple bash guard but need to enlarge the hole in middle of it to have it slide over the BB shell (on a Zesty) so I can fasten to the ISCG tabs. I tried an old file I had lying around and it seemed a lot of effort for a tiny bit of metal removed (mostly the anodising :p ).
I've been looking for a drill bit that would do the job but can't see anything obvious (only needs about 0.5mm removed around the circumference). B&Q stock this for a Dremel (which I don't own) http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=9288328&fh_view_size=10&fh_start_index=20&fh_eds=%3f&fh_location=//catalog01/en_GB/categories<{9372015}/categories<{9372047}/categories<{9372205}&fh_refview=lister&ts=1251212260754&isSearch=false
could I just use that in a drill or is something likely to kill me?
I suck at DIY and also don't want to spend more than a few quid as it's a one-time deal, any other ideas if the thing in the link wouldn't work?
