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A mate has just bought some brand-x 29er wheels (not sure what model but I think they only list one) but he needs a 12mm front axle and they come with 15.

He’s been on to Wiggle but not had much help there – seems they do a QR end cap but not a 12. He bought a pair of Prime 12mm caps because I thought their 15mm caps looked just like the corresponding b-x ones but apparently no good.
Can’t really use a 12-15mm tube up the middle because the 15mm caps will need filing down to fit the fork and would leave only about a 0.5mm wall – sounds fragile to me (I think they’re probably not weight-bearing but if they crumble, nothing will be loading the bearings).

Does anyone happen to know who makes their hubs?
Better still, does anyone know which caps might fit?
Or does anyone have a set of the QR caps and think they might take a 12mm drill?
Or should he go for the 12-15mm tube and the thin-walled caps will be fine?
 

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Not sure if I would be legally liable or not, but I am not about to get on the interwebz and suggest someone modify a part in a potentially unsafe manner and then risk his life riding it.

I might do it myself, but I am not going to sue myself if I kill myself.

Half a millimeter of metal is a very small amount to support any load.

Drilling qr-(what, 9-01mm?) holes a little bigger might make sense depending on the construction of the part .... it is his life potentially in a wheelchair, so he can risk what he wants.

Has he considered selling the wheels (at a loss, I know) and buying what he actually needs? Better to lose some cash than to lose the ability to walk again, I figure.
 

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Not sure if I would be legally liable or not, but I am not about to get on the interwebz and suggest someone modify a part in a potentially unsafe manner and then risk his life riding it.

I might do it myself, but I am not going to sue myself if I kill myself.

Half a millimeter of metal is a very small amount to support any load.

Drilling qr-(what, 9-01mm?) holes a little bigger might make sense depending on the construction of the part .... it is his life potentially in a wheelchair, so he can risk what he wants.

Has he considered selling the wheels (at a loss, I know) and buying what he actually needs? Better to lose some cash than to lose the ability to walk again, I figure.

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Oh... You told so much that I had no more desire to modify anything on the bike myself.
 
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