Tips & Tricks: Stop Collar for Forstner Bits

For projects requiring several different-sized holes drilled to precise depths, I like to set up stop collars on the bits required rather than constantly changing the depth stop on my drill press. The collars work well on regular drill bits, but their outer diameter is often too small to work with a Forstner bit. I’ve found that drilling a hole in a 1/4" plywood “washer” and sliding it to the desired depth between the collar and the bit’s cutting end works with even the biggest of my collection. This trick also works well when using Forstner bits on the lathe. 

 —Jeff Peters Redgranite, Wisconsin

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