Weird size holes - how???

[Gary Stockton]

I have a stripped out hole / captive nut in a chassis rail where I have to bolt an ASFIR plate. So I bought a Memfast Rivnut tool (well, it's now justified now, right?? :lol; ). Question is - I need an 11.1mm hole. How do you do that accurately, or do you not, and just wiggle the bit to get a bit more chopped out, and hope the tolerances work out?

Cone drill bit taped to the right size? Like this?

 

[Gav Peter]

Just buy a Ø11.1mm drill bit Gaz...

 

[Gary Stockton]

Still full of the Christmas spirit hey Gav

I'll go look for one - preferably a left-handed one


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[Gav Peter]

Still full of the Christmas spirit hey Gav

That's the problem Gaz, I'm not... Going cold turkey at the moment...

 

[OG.]

http://www.google.co.uk/products/ca...a=X&ei=b1rkUIPOEMK-0QXp_4GwCg&ved=0CEUQ8wIwAw

 

[Gary Stockton]

That's got to be a joke!! If its not I'll be getting one


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[Gav Peter]

C'mon dopey, its 2013 y'know...

http://compare.ebay.co.uk/like/230576840383?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar&cbt=y

 

[Gary Stockton]

Ja - just figured out it's a 7/16" bit


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[Graham]

That's got to be a joke!! If its not I'll be getting one


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.
You seriously didn't know you can buy 11.1 mm drill bits ?

Gra.

 

[Gary Stockton]

Who've thought hey. Just goes to show what you can get

Now ordered!

 

[Chris]

Gary, they don't have to be that close. Either slightly bigger and it will expand or slightly tight and tap it in. I don't have an 11.1 mm drill and I have put loads in. Also - invest in a set of step drills, not that daft cone thing.

Chris

 

[Gary Stockton]

Have the step drill already, as per you recommendation, Chris. And £5.99 for the 11.1mm drill seems OK, so to avoid chaos and swearing I'll be getting one of those! I don't mind a difficult job - I do mind making it more difficult when I'm having to lie under the vehicle in the cold and wind

 

[Jon Wildsmith]

I have all sorts of odd sized drills but I save them for special occasions and just wiggle the 11mm drill about a bit for rivnuts