I already have a chair perch hence this sounds like a great idea! It's seen us through all his command trainings... would it help with nails now?!I do mine like this. It is could be the best thing ever for nails for me. A couple of take offs from this and the nails are done. This is aluminum oxide which is not preferable, I would get garnet, flint or silicon carbide, but really, it is abrasive material after all and there is not much difference in my opinion. And probably the finest grit for Preeno which should be around 300 - 400. I use 180 for my African Gray. Astro hated perching on it at the beginning and would just fly off when we came near, you might need to work with treats. Also for those who want to take this sanpaper chair advice, don't let your bird chew on the material...
Thanks! I'm gonna look for some sandpaper!