Trying this because the pressed bit in the frame is very loose and spins around when tightening up. Frame was bought on here as a new frame, and I understand how the seller would have no idea this was the case and that this does happen, from time to time.

But I am holding top nut and tightening the bottom, pulling the rivet nut up into the frame and in theory flaring it out to lock it, but it is not working. Still loose. Any suggestions?
I have seen the park thread about using a front QR and spare hub, I have no spare hub.

Any suggestions before I hit the LBS tomorrow?

Thats the only way I know of tightening them and it worked for me.

MarkII method also failing to make it grip. Arghhhhhhh.

Drill it out and get a car body shop to fit another.

Sorted, well kind of.
2nd method did tighten the rivet-nut enough for a screw to go on and not rattle around. But the thicker metal seatpost has far more secure water bottle mountings, neither down tube ones ever tighened enough before they spun, so those will be left well alone now they will no longer rattle around and annoy the hell out of me.

borrow a proper rivnut tool? They crimp the rivnut without having to hold it still – I suspect thats why your tools aren’t working, the rivnut turns when you tighten the nut.

I have one (east midlands) if that is any use to you.

2nd method does a good job of crimping, but it was getting to the point I was getting scared of damaging the thin metal there.

Got a rivnut tool if you’re in the Cardiff area.

I’ve got one if you’re in the Taunton area.

I’v got one in between wigan/warrington if any nearer

Got one here in the FoD if any one needs one.

That’s about half the country we’ve got covered, Sod’s Law says he’s in the other half 🙂

Yep, I’m in Essex.
Can I paypal gift any previous poster the postage cost to me of the tool? Signed for delivery?? Say £10 to cover postage and hassle.
I will of course post back 1st class and recorded at my cost.

Wally.