The Mongoose | Cutting Circles & Arcs Into Concrete
The Mongoose is one of the most popular concrete engraving tools from Engrave-A-Crete.
In this video, cutting perfect circles and arcs into existing concrete is demonstrated.
This is part 26 of an on-going series on Decorative Concrete, and is taken from the DVD Mastering Concrete Engraving, The Basics.
Perfect circles and arcs are a snap to cut with the Mongoose. Attach a connecting tube to the upper hole on the Mongoose chassis. Slide the connecting tube into the center pivot. Securely tighten the wing nuts.
Slippage at this connection during cutting will cause an ugly circle. Re-check the wing nuts before cutting. Place cross hairs on the slab at the center of the circle.
Exactly align the slots of the center pivot over the cross hairlines. On a small diameter circle, a lone operator can hold the center pivot in place by standing on it during cutting.
For larger circles, a second person must stand on the center pivot or the center pivot should be secured with concrete anchoring screws. When a second person is standing on the center pivot, the Mongoose operator must take care not to cut faster than the second can shuffle their feet clear of the connecting tube.
Purchase the DVD Mastering Concrete Engraving, The Basics to see this series in its entirety.
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