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Numpty question but is it possible/safe to trim down carbon fiber bars? In particular, an Easton CNT monkeylite bar.
If it is, I assume you can't just take a hack saw to it?
Not something I'd be happy doing TBH. Although I understand there are propriety CF saws about, so it's certainly possible to do it.
It's very easy to do, it just needs care
For starters, don’t use a pipe cutter, use a nice new hacksaw blade with the highest tooth count you can find.
Measure twice, cut once.
Wrap the area you want to cut with a couple of wraps of masking tape, if you have a cutting guide, use one, if not, hope your eye is good.
Cut halfway through then start cutting from other side to avoid fraying the carbon.
Tidy up the ends with a fine file.
Do not breath in the carbon dust.
Yep, as above (in particular the more teeth on the saw the better!). It's a bit of a pain in the arse (I've done it twice) but it's worth being careful and doing it properly. Only extra thing I did was to put a little clue on the newly exposed carbon to help seal it. It is a LOT more hassle than doing alu bars though, so allow plenty of time - it's quite easy to fray the carbon if you rush!