One of the most commonly asked questions we hear is, "How do I avoid breaking bits when I'm working with my RotoZip®?" These tips should get you going in the right direction. Read it here, or print the list and hang it where you'll be able to scan it quickly before you start every job.
Safety First
Always wear safety goggles and dust mask.
Choose Wisely
Make sure that you have the correct bit for the material that you will be cutting.
Make it Don't Break It
Always enter material at a 45° angle and then smoothly bring the tool up to a 90° angle (see image).
1. Use moderate steady pressure to guide your tool when cutting. Let the tool do the work. Too much pressure can result in bits breaking.
2. While Spiral Saws™ will cut in any direction, in order to optimize cutting performance and reduce the risk of breaking bits, most materials should be cut in a clockwise direction. The exception is when cutting around an outlet box in drywall - then it's best to work counter-clockwise.
3. When inserting bits into the tool, leave 1/8" of exposed shank above the collet or chuck. Tightening the collet or chuck over the cutting surface of the bit reduces flexing and leads to broken bits.
4. Our bits are designed to cool themselves. The Zip® Bit should be at least 1/8" past the material being cut. If the bit is not extended all the way through the material, it will start burning and cause the bit to break prematurely. So, make sure to adjust your base plate to the proper cutting depth.
5. Spiral Saws® spin at up to 30,000 RPM so keep the tool moving at a steady speed while letting the tool do the work.
6. The base plate must remain flush with the material at all times. This prevents uneven pressure from being placed on the bit, which could result in premature bit breakage.