tips&techniques

摘要

To celebrate FHB's 40th anniversary, I've chosen my favorite Tips & Techniques from the first year of the magazine to feature throughout the year. A lot of the time these tips still work and don't cost much. This one is a good example. It uses standard plumbing parts (about $5 at the time, perhaps $20 today) to quickly dig a narrow hole under a slab.- CHARLES MILLER Have you ever needed to bury a water, gas, or electric line and found your path blocked by a concrete slab? Here's a hydraulic method for making a small, accurate tunnel under such an obstacle, using a garden hose, iron pipe, and about $5 worth of common brass fittings from your hardware store.