I've been making slipjoints with carbon fiber, no liners and pins only for pivot, spring and elsewhere. I relieve the sides, and pein together. It is the most unforgiving material in that you cannot loosen the knife up. The peined pin simply does not budge. Normally if I pein a little to hard the knife binds up. I wedge it open a bit before sanding pins down or before doming and it works pretty easily. Not with some of the man made materials such as carbon fiber, G10, a type of material made with kevlar that I use(don't know the name..bought on ebay). They hold like hell. The only thing I have noticed with a liner less slipjoint is that after a month or so of using the knife...it becomes a little stiff as if it wanted lubrication. The SS to blade normally gets easier and easier to use..not true with CF. A drop of oil though loosens it up for another month or so. Makes a pretty knife if you like the look of carbon fiber and it is tough! Sands and shapes very easily, almost too easy because you can take off too much material fast. Once the shaping of the handle is complete, a little hand sanding and a quick buff, and it looks good.