How to fix drilled hole too big for plug?

Try WetnFix? www.wetnfix.co.uk, I swear by it.

Will
November 2010

This is ages ago but in case it helps anyone. Get some epoxy injection resin and mix a small amount up on some card and fill the hole like polyfiller. This will go off very quickly (5 minutes) and once hard, it can be sanded, drilled etc like a plastic but is as hard as rock as a fixing. Similar products are available as a 2 part putty that you mold in your fingers until mixed and push it into the hole like chewing gum, again it will be hard in a couple of minutes : said the vicar to the choir boy!

Steve
October 2010

You may be drilling into Lime Plaster often found in older houses (mine 1935 has it all over) concrete will (should not) "powder".

To fit curtain poles in my house I use a wooden batten fixed firmly with two or three 6" frame fixings right through the batten and into the brickwork...

http://www.toolstation.com/images/library/stock/webbig/61889.jpg

...and screw the pole brackets to the batten with woodscrews. Much better hold than trying to fix the brackets directly to the wall - even if it holds it will not be long before it all comes tumbling down as the lime plaster crumbles. Fixings well into the brickwork are much more permanent.

Good luck...

Peccavi
March 2010