Frequently Asked Questions
- Show All
- FAQ's: Annular Cutters
- FAQ's: Carbide Tipped Drill Bits
- FAQ's: Diamond Drills
- FAQ's: Electrician's Drill Bits
- FAQ's: Extra Long Drill Bits
- FAQ's: Holesaw Drills
- FAQ's: Masonry Drill Bits
- FAQ's: Metal Working Drills
- FAQ's: Percussion Core Drills
- FAQ's: Reamers
- FAQ's: Reduced Shank Drills
- FAQ's: Silver & Deming Drills
- FAQ's: Stanley Hydraulic HD-45 & Skil 736 Drill Bits
- FAQ's: Taper Shank Drill Bits
- FAQ's: Wood Drill Bits
Do you need a pilot hole with a taper shank drill bit?
For large diameters, yes — starting with a smaller drill improves accuracy and reduces load on the bit.
Do you need special drill bits for wood?
Yes, for best results. Wood bits have sharp points and spurs to cut fibers cleanly.
Does it matter which way you drill a hole?
Yes—drill straight and perpendicular for a clean cut. For delicate materials, drill halfway from each side to reduce tear-out.
How accurate is an annular cutter?
Very accurate—most produce holes within ±0.005" tolerance when used in a stable setup with proper feed and speed.
How can you tell if a drill bit is for masonry?
Masonry bits have a distinctive arrowhead-shaped tungsten carbide tip and a slightly duller, sometimes silver or gray finish. The cutting edges are wider than the shaft, designed to chip rather than shave material.
What types of drill bits do you sell?
We carry drill bits for metal, wood, masonry, concrete, and specialty applications. Whether you're a DIYer or a pro, we’ve got what you need.
How do I choose the right percussion core drill bit?
Match the bit diameter to your required hole size, select the right shank for your drill, and choose diamond or carbide teeth based on the material.
How do I choose the right reamer size?
Choose a reamer that’s slightly larger than the pre-drilled hole size you need to finish — the hole should be about 0.010"-0.015" smaller than the final reamed size.
How do I choose the right Silver & Deming drill bit size?
Match the diameter to your required hole size and ensure your drill has the torque to handle the larger bit.