Circle Saw Blades
I inherited an electric circular saw. I need to change blade but am not sure which way the bolt should be turned in order to loosen it... clockwise or counterclockwise? Also how do I keep the blade from turning when I loosen the mounting bolt?
H from Ormond Beach, FL
First, a little theory is in order. The "hand" of the thread... whether it tightens clockwise or counterclockwise... is critical in designing a rotating device such as a saw, router or drill. In order for the mounting bolt to stay tight, the threads on the bolt must tighten "opposite" of the rotation of the blade... otherwise the turning of the blade would eventually cause the bolt to turn out! Therefore, if the blade on your saw rotates counterclockwise, then the bolt is tightened clockwise. So, if you blade turns counterclockwise, then loosen the bolt counterclockwise. Right-handed circular saws all have blades that turn counterclockwise... left-handed saw blades turn clockwise. My head's spinning... glug.
For ease of blade removal, many saws utilize a sliding lock or lever that holds the blade in place for loosening the bolt. Look for such a lever on the motor-side of the saw. If your saw does not have such a built-in blade lock, clamp a pair of Vise Grips or a clamp to the blade and turn the blade till it is locked in place. Then you can loosen the bolt.
Have a small home repair question for THE NATURAL HANDYMAN? Just click here www.naturalhandyman.com/aitikia
For more home repair information, visit NH's growing list of original home repair articles and quality links www.naturalhandyman.com
If this information has been valuable to you, please consider making a small donation to support NH's free service to the home repair community! For more information, please visit our "Friends" page www.naturalhandyman.com/friends
The Natural Handyman Site Directory
- Home Repair Articles www.naturalhandyman.com/iip
- Home Repair Links Library www.naturalhandyman.com/linkslibrary
- NH's Bookshop www.naturalhandyman.com/bookshop
- Find a handyman at www.naturalhandyman.com/network
- Win unique home repair gifts and prizes at www.naturalhandyman.com/contest
Please read the important copyright and disclaimer information is located at www.naturalhandyman.com/copyright
Also in Home
- Creating an outdoor kitchen
- Eliminating bed bugs
- Managing home projects
- Saving on water one drop at a time
- Cheaper summer cooling
- Inexpensive landscaping ideas
- 6 cheap, effective home security solutions
- 5 simple and affordable luxuries for your home
- 5 frugal ways to expand your living space
- Top 10 DIY mistakes made by home 'handymen'
- How spring cleaning can save you money
- 4 secrets to budgeting for a home purchase
- Find the best mortgage rates in your area
- 3 ways to use a mortgage calculator
- Mortgage calculator: Calculate your payment and more
- Home equity calculator: HELOC vs. line of credit
- Mortgage refinance break-even calculator
- How much money can I borrow for a mortgage?
- Who offers the most home insurance discounts?