Depends on the soft, fleshy fruit. Is that 1.5 mm, cm, inches? I use a boning knife to make a "plug" hole in a watermelon for pouring in brandy or vodka. If you want it to go all the way through, look for a piece of copper tubing that is long enough, has not been used and is clean. Don't hammer it through. Use pressure and turn it while pushing. You might use an apple peeler-corer with the peeler part set away from the fruit. It drills through to remove the core.
My source is my own experience. I've cored many apples that were too large for the peeler part with a peeler-corer, and used a piece of copper tubing to make eyes in a jack-o-lantern, holding a plastic ball against it from the inside to keep it from crushing the shell. I hope this helps.