I doubt removing a bit of material will have a significant effect on shifting. On the other hand, the mental anguish over having such a boat-anchor chainring would be crippling.
Fiberlyte are much more expensive with a fraction of the useful life.
Is it worth for less than 20 grams to mess up a good chainring? Ask praxis if they can make you a road 46T chainring. If not, I know stronglight makes a 46T outside ring in compact black.
But that will be expensive. Just take it to a credible machine shop and tell them what to want to do. They will make the precision measurements and setups.
The hard part will be getting a good symmetric pattern of material removal without hitting any essential "features" of the chainring.
Surprised at the lack of support here, where people pay $1k+ to save 75 grams off frame weight.
It isn't a lack of support. People are just giving their opinions. Sorry you don't like the advice.
Like I said, make sure you don't take off the shifting ramps by machining the chainrings or else they will shift worse than stronglight or TA.
Since you want quality shifting, I don't know if its good to do that. Why not contact praxis and ask them? maybe they can make you a light road 46T. If you don't ask you won't know.
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What happened to tuning and experimentation? Is WW now all about people just buying and not tuning or experimenting?!
To hell with the warranty, make it your own.
If you can afford to mess with it, DO IT!!
Surely you don't need a milling machine to do the work, just a steady hand and patience with a rotary tool along with proper bits. That's it.
I would love to see how it comes out, and I certainly trust - and know - that you are intelligent in where you will be removing excess material so it won't interfere with the Praxis' shift ramps and pins.
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