Sprinkle and toss precut daikon and carrots with 1 tbsp salt. Allow to sit for 10 minutes.
After 10 minutes, run the daikon and carrots under cold water and rinse very thoroughly. Drain water with a colander or strainer and squeeze excess water out with paper towel.
In a separate bowl, combine sugar with boiling water and mix until sugar is completely dissolved. Add vinegar and mix thoroughly.
Place daikon and carrots into a large sterile jar. Pour in the pickling solution, then add 1 cup of room temperature water (or slightly more) until the vegetables are completely submerged.
Allow to pickle for 3-5 days, then enjoy!