Originally Posted by DaveSSS

None of my bikes have a compression plug anymore. The entire area from the top of the steering tube to the bottom of the stem is filled with solid epoxy, with a 6mm thread insert at the very bottom. That makes it impossible to crush the steering tube and nothing will ever slip. I also don't need a 5mm spacer above the stem. I've only got a 10mm headset top cover and a 10mm spacer under the stem. If someone wanted to cut the steerer 10mm shorter, they could. If you've got 40mm of spacer, you'd need to place the thread insert lower, so a future owner could cut the steerer shorter. The top of the steerer is the only place where crushing by over tightening the stem is thought to be a problem.

I use star nuts as the thread insert and grind down the OD, so they slide easily into the steerer and self-center. I use a foam rubber plug to set the depth of the star nut and keep the epoxy from running further…
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