LumberJocks

Circular saw blade sharpening jig

  • Advertise with us
Project by Dynamike posted 08-08-2015 03:42 AM 7530 views 22 times favorited 14 comments Add to Favorites Watch

So I built this contraption a couple of weeks ago. It was dreamed up out of pure necessity. My blades, all of them, were pathetically dull and I kept putting it off and putting it off, because it’s darn expensive to have blades sharpened. Retired and all I had to think of something. I’m not naive enough to think that this thing can sharpen a blade as well as a machine but I do think that sharpness in all of it’’s forms is relative. This machine actually works quite well. The motor I acquired on a local sale site and thanks to Scotty D’s Woodworking answering the add I put out. I chopped it up to a shape I could use and mounted it. The lower table is adjustable perpendicular to the diamond abrasive in micro increments to fine tune the tooth angle. I did the first blade (which you see here) with a 600 grit diamond disk, but it isn’t nearly fine enough. I have a 1500 and 2000 in the way. I’ve been using the blade for a couple weeks now and it’s like cutting butter. I forgot how nice the blade was when it was new. Virtually no burn what so ever. I’m happy with it.

-- "It's not scrap until it's sawdust", and maybe not even then...MAKwoods





14 comments so far

View mbs's profile

mbs

1605 posts in 2399 days


#1 posted 08-08-2015 03:53 AM

Smart Idea. You’ll have the sharpest blades on the block for sure.

-- Sorry the reply is so long. I didn't have time to write a short reply.

View kiefer's profile

kiefer

4881 posts in 2126 days


#2 posted 08-08-2015 04:13 AM

That looks like it’s working just fine .
Nice to have a sharpening machine in the shop .
What size is the blade and what is the motor RPM ?

Klaus

-- Kiefer https://www.youtube.com/user/woodkiefer1/videos

View CharlieK's profile

CharlieK

467 posts in 3252 days


#3 posted 08-08-2015 12:22 PM

Very clever! Can you adjust the angle where the diamond disk meets the blade?

-- Adjustable Height Workbench Plans http://www.Jack-Bench.com

View Stanley Coker's profile

Stanley Coker

226 posts in 2655 days


#4 posted 08-08-2015 01:39 PM

Great ideal, I would love to have the plans, if you would care to share.

-- Stanley, North Georgia

View TroutGuy's profile

TroutGuy

224 posts in 3171 days


#5 posted 08-08-2015 07:40 PM

I like this idea a lot! I will be interested to hear how you like the finer grit diamond wheels. Please let us know.

One caution – if you’ve got a chipped tooth that you’re trying to fix, start with the coarse wheel. You don’t want to ‘hog material off’ with your 2000 grit.

-- There is nothing in the world more dangerous, than a woodworker who knows how to read a micrometer...

View TheFridge's profile

TheFridge

5764 posts in 945 days


#6 posted 08-08-2015 08:01 PM

I made a crappy jig once upon time. Worked ok.

The carbide dust messed with me bad though. Not hospitalization bad but my lungs hated me for a couple days kind of bad. I’d suggest some kind of collection if possible.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View b3528294's profile

b3528294

7 posts in 739 days


#7 posted 08-08-2015 10:37 PM

Have you seen this video?

https://youtu.be/oQ2Gmm5DQ5I

It’s kind of the same idea.

View Dynamike's profile

Dynamike

77 posts in 798 days


#8 posted 08-09-2015 12:06 AM

@ kiefer 6 inch diamond disk, 5/8 arbor. Motor is an old cordless Circular saw which spins at 2600 RPMs.
@Charlie K. The lower table moves from side to side to change the contact angle of the tooth.
@b3528294. That guy in the video has no control over how much tooth material he’s removing or the contact angle. He’s just eyeballing everything.

-- "It's not scrap until it's sawdust", and maybe not even then...MAKwoods

View Dynamike's profile

Dynamike

77 posts in 798 days


#9 posted 08-09-2015 12:09 AM

@Stanley Coker. Sorry there are no plans bud. This is the final one of 4 mods and design changes all done out of my head bro, but Copy to your hearts content from the pictures though.

-- "It's not scrap until it's sawdust", and maybe not even then...MAKwoods

View Dynamike's profile

Dynamike

77 posts in 798 days


#10 posted 08-09-2015 12:16 AM

-- "It's not scrap until it's sawdust", and maybe not even then...MAKwoods

View Woodwrecker's profile

Woodwrecker

3925 posts in 3035 days


#11 posted 08-09-2015 01:13 AM

That’s really using the old noodle brother.

-- Eric, central Florida

View 489tad's profile

489tad

3098 posts in 2471 days


#12 posted 08-09-2015 05:08 AM

Man that looks like a fun build. Hats off to you for solving a problem. I looked at your other projects and you have an engineering mind. I’m looking forward to see what you come up with next.

-- Dan, Naperville IL, I.G.N.

View deon's profile

deon

2508 posts in 2485 days


#13 posted 08-09-2015 07:53 AM

Excellent idea

-- Dreaming patterns

View Jim Jakosh's profile

Jim Jakosh

17108 posts in 2565 days


#14 posted 04-08-2016 03:14 AM

That is a real neat setup. I have been thinking about the same thing but have not done anything on it yet. I just took a 60 tooth carbide blade in for sharpening and it $18 to sharpen a a $60 blade.

Do you use any water on the diamond blade to cool it?

Does they blade turn on a central spindle to index the teeth?

Thanks for posting…...............Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com