Newb Question on Table Saw Blade - Woodworking Talk - Woodworkers Forum
 1Likes
  • 1 Post By woodnthings
 
Thread Tools Display Modes
post #1 of 5 Old 07-06-2017, 02:56 PM Thread Starter
Senior Member
 
Join Date: Feb 2017
Posts: 130
View mangorockfish's Photo Album My Photos
Newb Question on Table Saw Blade

I have prefaced most of my posts that I am a "rank newb", but even with that disclaimer, I almost feel silly asking this question. How do you tell if a table saw blade is dull? I asked my dad and he said that the cut will probably have swirl marks on the blade side of the cut. Anyway, how can I tell? Thanks
mangorockfish is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 07-06-2017, 03:24 PM
Moderator
 
Steve Neul's Avatar
 
Join Date: Sep 2011
Posts: 25,720
View Steve Neul's Photo Album My Photos
That is a difficult question to answer. If it's real dull you can look close at the teeth and see and feel the dullness of the blade. It may also burn the edges of the wood or smoke when cutting. If it's only a little dull you would have to have experience with a sharp blade so you could feel the difference in how hard you have to push the wood through to make the cut.

The best thing to do if you only have one blade is to buy a new blade and try it. You will need a blade to use while you are having a dull one sharpened anyway.
Steve Neul is online now  
post #3 of 5 Old 07-06-2017, 05:27 PM
where's my table saw?
 
woodnthings's Avatar
 
Join Date: Jan 2009
Location: SE, Michigan
Posts: 25,259
View woodnthings's Photo Album My Photos
my blade won't cut ...

There are several variables in effect when a blade won't cut... I did not say it's dull, yet.

Too many teeth, a fine tooth blade, will not rip down the length easily, it will heat up and start to burn to wood and it may make swirl marks on the wood. If you know the history of the blade and it's only been used by you, on your saw then hopefully it hasn't been abused. A unknown sourced blade is more of a gamble.

Wood that has a lot of gum or pitch like Pine will cause a blade to heat up and not cut well. It's best to start with a blade that has all the gum removed, by scrubbing with a brass brush and some "purple" Simple Green in a pie pan. Let is soak for a hour or so.

Other woods are quite hard like Rosewood and require a very sharp blade. Cross cutting and ripping are two different types of cuts and you may need two different blades, one for each.

Blades have different "sets" or offsets on the teeth. Search for saw blade types and you'll see this. One way to tell if a blade is dull is to look at the teeth and see if there is any reflected light on the cutting edge of each tooth. A sharp edge will not reflect light.

calkan likes this.

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 07-06-2017 at 05:53 PM.
woodnthings is online now  
Sponsored Links
Advertisement
 
post #4 of 5 Old 07-06-2017, 06:53 PM Thread Starter
Senior Member
 
Join Date: Feb 2017
Posts: 130
View mangorockfish's Photo Album My Photos
Thanks for the info guys. I think I'll just get new blades for both saws and be done with it, then have the others sharpened. What tooth count and brand should I buy? I'll be ripping mainly pine boards. I cross cut with the miter saw. I'm on a couple of other boards, but this one is the best. Thanks
mangorockfish is offline  
post #5 of 5 Old 07-06-2017, 07:35 PM
Junior Member
 
Join Date: Apr 2017
Posts: 22
View substratum's Photo Album My Photos
That's a really good question. I ask myself the same question each time the table saw gets used... "Is it time for a new blade, or will this get me through one more project?"

The first time I purchased a new table saw blade, I literally drew blood a couple of times while mounting it. At that point it was clear to me what a sharp blade was, LOL!
substratum is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Woodworking Talk - Woodworkers Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
New Blade for Delta 36-725 table saw question unknowneinstein Power Tools & Machinery 16 02-21-2018 07:44 PM
Beginner needs help! Table saw riving knife and blade sizing question jnick Power Tools & Machinery 7 01-21-2017 09:46 AM
Grr-Ripper - Why it impresses me for both safety & performance JimGnitecki Power Tools & Machinery 21 07-07-2016 10:02 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome