The basic geometry for the three parts of this candle holder came from previous designs I've published. This particular design will accommodate most any candle, but it would be best for the large diameter ones that aren't so tall. Note that there is a small spike in the center which can be easily removed with diagonal cutters if desired.

I do plan on reworking this design for taller, smaller diameter candles. In the meantime you can print this one in just under 23 1/2 hours using a print speed of 90 mm/sec and layer height of 0.200 mm. Be aware that printing this successfully requires your printer to have minimal stringing; the diagonal lattice in the middle is a good test for this.