gpiwowar

If the grooves in the handle are stripped to the point they can't engage the teeth on the shaft, then yes the handle needs to be replaced. (It seems to me this is likely the problem.)However, if the teeth on the shaft of the cranking mechanism are worn or stripped, then the whole mechanism needs to be replaced - which will probably be expensive. (This entails unscrewing the mechanism from the frame when the window is cranked open.)As a cheap alternative, you might try applying REMOVEABLE "thread locking compound" (like "Loctite Threadlocker BLUE 242") to the teeth on the shaft before you slide the handle on. (Note that you would then have to apply heat (eg hot air gun) to the handle in order to remove it.)Good luck and please let me know how it goes!

PS If you do try to buy a replacement handle, try a window / glass shop as many parts are standard (but be sure to take your old one for comparison).

I have not tried it myself, but I have been told that you can try to open a window with a broken crank:- Ensure the latch / keeper lever is disengaged; (on my window that means it is in the downward position).- Try to jiggle / vibrate the window open by applying outward pressure while attempting to open it with the broken crank. (It may help to spray some penetrating oil like WD-40 etc into the mechanism.)I am told that if you are patient and persistent with the jiggling (while applying outward pressure on the window), you might get it open enough to get access to the screws that hold the crank mechanism against the frame of the window.Good luck and please let me know how it goes!

I have not tried it myself, but I have been told that you can try to open a window with a broken crank:- Ensure the latch / keeper lever is disengaged; (on my window that means it is in the downward position).- Try to jiggle / vibrate the window open by applying outward pressure while attempting to open it with the broken crank. (It may help to spray some penetrating oil like WD-40 etc into the mechanism.)I am told that if you are patient and persistent with the jiggling (while applying outward pressure on the window), you might get it open enough to get access to the screws that hold the crank mechanism against the frame of the window.Good luck and please let me know how it goes!

Excellent idea - my nose feels toasty just reading about this!

Yes - it gives tensile strength to the concrete so that it doesn't crack when you step on it (like re-bar does in concrete building footings).

That's the spirit! - cast iron is so much happier when it is put to work in the kitchen, surrounded by a loving family.

Thank you for the comment. While a hake brush would work fine, that's not what I used.