I'm wondering about using a quill stem in a steel threadless fork - this is for a folding bike project I'm contemplating so my ability to just get a fork and stem (for a reasonable price) that are an appropriate match is somewhat limited (probably not impossible, and I'm looking, but might take a while/never happen, SO:

Let's say I find a threadless fork, with a steel steer tube, and the wall thickness of that steer tube is comparable to a threaded fork - could I just use a locking collar clamped onto the steerer in lieu of a stem? I'm imagining I could apply the preload by means of a threaded rod or strap through the steering tube to compress the stack, then clamp down the collar, remove the rod, and install the stem. Or maybe get a steel stem and just grind off the actual stem and use it as a collar?

My impression is that what I'm describing is basically exactly a soma quillinator: https://www.somafab.com/shop/soma-he...attr=3902,3647 (and if I had to buy a new headset anyways I might just use that).

Are there any special considerations to this that I'm unaware of?