Waterjets make shop cutting projects a snap. But did you know that you can apply four basic techniques to pierce even the thickest and/or most brittle materials with ease?
Method #1: Wiggle piercing
This method of piercing requires that you move the cutting head back and forth over a short distance while the waterjet is running. This allows for quick clean piercing of thick material in a small amount of space. It also prevents jet backwash from reducing the effectiveness of the pierce. If you cut thick materials that are more than 0.5″ thick, this is especially important.
Method #2: Dynamic piercing
With dynamic piercing, you allow the jet to move into the material and pierce it as it moves. This method can sometimes be even faster than wiggle piercing. However, the proper speed and length of a dynamic pierce is a function of the cutting conditions and is often very hard to predict. So for the most part, this method is actually slower than wiggle piercing.
Method #3: Stationary piercing
Stationary piercing requires keeping the nozzle in one place. Typically, this method is best when: (1) you don’t have enough room to perform a dynamic or wiggle pierce or (2) when the material you’re working with is valuable and you want to minimize the amount of scrap material. It’s much slower than either wiggle or dynamic piercing, so it’s reserved only for piercing thin material or making tiny holes.
Method #4: Low pressure piercing
If you’re working with brittle materials like glass, it is often desirable to pierce at a lower pressure than you would normally cut with. This prevents cracking of the material. Low pressure piercing can be combined with any of the above methods.
TechMoon makes state-of-the-art, multi-purpose waterjets. We tailor each of our machines to client needs and with a view to keeping quality high but costs low. In fact, our waterjets cost thousands less than those made by our nearest competitors.
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