I have been struggling to find a right candle glass I can put in the wool shell. Its height should be more than 6cm so the candle flame wouldn’t come out of the glass. Even though wool generally wouldn’t catch the flame (amazing!) it’s safer to use one with certain height. Then it should be a cylinder shape. I found them at IKEA. It was not candle holder but a drinking glass. I was so happy when I found it. Didn’t cost much either.
I used a sanding machine when I made this it helped me to save a lot of time