Fork Conversion?

Has anybody ever threaded the steerer of an inch threadless fork to make it fit a threaded headset/quill stem? As far as I can see, assuming there isn't a star nut in steerer (so there's space for the quill) there might not be any issues. Or would the tubing too thin for thread cutting, or the internal diameter not big enough for the quill, or there be issues with the crown race?

Any thoughts/experiences would be of much use, thanks.

Theoretically possible, that's how threaded steerer tubes are made in the first place.

Damaged star nut usually gets pushed out via the fork crown end so shouldn't pose a problem.

Both valid points, cheers fellas.

Two things to consider:
Steel of threadless steerers are sometimes thinner than that of steerers intended for threading so they may not be suitable.
Also, you will probably have to find a frame builder to thread that for you, not all shop mechanics will have the right tools to do it.

Yeah, it's the thickness I'm most worried about, don't want a random steerer snap any time soon! I work as a mechanic, and have the relevant tools, I just wanted to see if anyone had any first hand experience before I gave it a go. Thanks for the input though alibi, it's always useful.

I asked a few shops/framebuilders about this a while ago and couldn't find anyone willing to do it. Ended up having to have a new steerer tube welded on to the original fork. I'm up north though, a lot of the tools and machinery got sold off in the 80's.