This man is making a tumbler. out of a gray goose bottle,
.@grok gives the procedure for smoothing out the edges.
Start with coarse grit (80β120 grit wet/dry sandpaper)
β’ This quickly knocks the sharpness off.
β’ Wrap the sandpaper around a thick dowel, pencil, or your gloved finger for the inside edge.
β’ For the top rim and outside edge, you can lay the sandpaper flat on a table and rub the bottle upside-down in circular or figure-8 motions.
2. Progress to finer grits
β’ 220 grit β removes the scratches from the coarse paper.
β’ 400 grit β starts to feel smooth.
β’ 600+ grit (optional) β gives a nice polished finish.
3. Keep it wet
β’ Dip the sandpaper and the rim in water (or run it under a faucet) while sanding. This keeps dust down and makes the glass smoother faster.
4. Check your work
β’ Run your finger (gently!) along the inside and outside of the rim. It should feel completely smooth and rounded, not sharp at all.
β’ Rinse the bottle thoroughly and let it dry.
Faster alternatives (if you have them)
β’ Dremel / rotary tool with a sanding drum or diamond file attachment β much quicker but still wet-sand afterward for smoothness.
β’ Glass file or diamond sharpening stone β good for the first pass on the edges.
β’ Lapidary diamond pads (available cheap on Amazon) β give the best pro-looking results.