While spade bits may not be the first thing you think of when drilling holes in woodworking, they are a useful tool that can be used for a variety of tasks. I generally turn to spade bits for specially-sized holes. I will buy a 3/10 cm spade bits if I need something slightly smaller than 3/10 cm. I then grind the bit (at a disc grinder, if necessary) until it is just right for the job. I then use the bit and place it in my drawer with other partially-mutilated spade bits.
It is a good idea to mark the bit using a permanent marker in black so that you can easily recall the exact size if you ever need it again.
Bosch has taken the humble spade bit to new heights. Bosch just introduced a new type of spade bit called DareDevil. The bit is funky and shows the improvements Bosch claims will improve performance.
This bit is full of patent-pending features. Bosch first introduced innovation to the spade bit by creating the first threaded, full-cone tip. (Click here for more Bosch innovations.) These tips have been used by woodworkers for a long time on auger-style bits and drill bits. (See photo below). In fact, Craftsman has a line of spade bits, both regular and stubby designs, that have a self-feed tip, but the tip is only threaded on two edges; its not a full cone.
The DareDevil spade bits also feature a contoured paddle. The company claims that this wave-like shape speeds chip removal and increases the bit’s speed.
Bosch recommends that you reconsider your decision to drill holes with spade bits if you are unhappy about the hole quality. DareDevil bits with spur and reamer designs not only score the wood leaving a clean entrance, but also leave less tearout because of the angled cutting edges.
DareDevil bits come in three lengths: 10 cm, 15cm and 41cm. They are sold individually or in eight different packages and range in price from as little as for single bits to full packs priced above
We were promised some samples so we will drill a few dozen holes and compare bits before reporting back to you.
How about it? Are spade bits a part of your regular drilling gear? Do you manipulate these bits to special sizes? Do you have any special uses for these bits? Leave a comment. We’d love to hear from you.
