Old Saw Blade + Sandpaper = Perfect Smooth Straight Edges - Making a Precision Edge Sander
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- เผยแพร่เมื่อ 28 ก.ย. 2021
- I used an old worn out, rusty saw blade to make the sanding disk. Cutting off the teeth is the first step and I did that with an angle grinder equipped with a thin cutting blade. A hacksaw would get it done, but take longer and require just a bit more effort.
The sandpaper is a standard 9 x 11 sheet and is glued onto the 9" diameter disk with spray adhesive. I did this before (on that blade in the opening scene) and the spray adhesive does a great job of firmly holding the sandpaper on.
I only put sandpaper on one side, but you can do both and have a fresh surface ready to go when the first wears out. Or you can put a finer grit (or coarser) on the other side.
This produces very good results with 100 grit paper. It does still have swirls marks but they are very tiny and light hand sanding would quickly clean that up.
Where this really shines is with plywood, as you can see in the before / after photos in the video. My table saw with a sharp blade produces a very good cut, but that can be dramatically improved with this.
It also does a great job of jointing a straight edge on a board. It takes a few passes but it will get it done and it'll a silky smooth finish as well.
This setup lets you quickly edge sand stock of any width and up to as thick as the disk is sticking up, and is as fast a changing the blade on your saw.
In the video I cut high into the quick release auxiliary fence to make it look more dramatic, but I would recommend only going a bit higher than the stock you normally work with. This will give more support on either side of the blade for sanding shorter pieces. You can also wheel the disk all the way up without the fence and use it as a normal disk sander to shape parts.
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I used an old worn out, rusty saw blade to make the sanding disk. Cutting off the teeth is the first step and I did that with an angle grinder equipped with a thin cutting blade. A hacksaw would get it done, but take longer and require just a bit more effort.
The sandpaper is a standard 9 x 11 sheet and is glued onto the 9" diameter disk with spray adhesive. I did this before (on that blade in the opening scene) and the spray adhesive does a great job of firmly holding the sandpaper on.
I only put sandpaper on one side, but you can do both and have a fresh surface ready to go when the first wears out. Or you can put a finer grit (or coarser) on the other side.
This produces very good results with 100 grit paper. It does still have swirls marks but they are very tiny and light hand sanding would quickly clean that up.
Where this really shines is with plywood, as you can see in the before / after photos in the video. My table saw with a sharp blade produces a very good cut, but that can be dramatically improved with this.
It also does a great job of jointing a straight edge on a board. It takes a few passes but it will get it done and it'll a silky smooth finish as well.
This setup lets you quickly edge sand stock of any width and up to as thick as the disk is sticking up, and is as fast a changing the blade on your saw.
In the video I cut high into the quick release auxiliary fence to make it look more dramatic, but I would recommend only going a bit higher than the stock you normally work with. This will give more support on either side of the blade for sanding shorter pieces. You can also wheel the disk all the way up without the fence and use it as a normal disk sander to shape parts.
This setup, plus a wedge, would be excellent for breaking the edge on long stock. You could make it as small as you want and no valleys.
"In the video I cut high into the quick release auxiliary fence to make it look more dramatic" ...it worked. I was like... wtf. Great video for a great idea though.
Did you save those tungsten carbide teeth or throw them away?
genius
That last sentence has me sold.
My favourite bit is when he takes an angle grinder to a moving table saw blade! Never thought I'd see that one!haha
Watch Izzy Swan
This would make sanding long sections of wood ideal. I tend to not apply equal pressure and end up making a valley, rounding an edge, or sanding so that I do not have a clean 90 degrees anymore. This is such a simple solution to many sanding problems! Thank you John!
Yea, only sander I've ever seen that you could use with a featherboard lol.
Just have to master the hand plane!
@@Nevir202
I think that you could also use it with John's miter sled for sanding tapered cuts.
@@jewishmafia9801
Agreed!
If you don't have the wherewithall to make a disc yourself, busy bee sells 10" blanks for this very purpose.
I’ve now followed your channel for so long and made so many of the same tools that you have shown, that I actually have forgotten that you were the original source. I was watching you draw a circle and thought “ hey he made the same tool I did.” Then realized I had copied you in the first place. Thanks for your content. I actually once sent you pics of my lathe stand that I made off plans from your website. I think you had it posted for a while. Anyway thanks again
Excellent use of the grinder to true up the diameter of the blade, glad you showed that.
Now this is really one of those "why didn't i think of that" kind of inventions. Brilliant idea John. You're the MAN!
That’s my thoughts every time I see a jig like this or any jig for that matter. I’m just not wired to problem solve with my skills the way I should. We’ve been systematically programmed to not critically think anymore. I would love to push or retrain my mind to figure stuff like this on my own. A bit high speed for my taste not to mention I have designated tools for this but very creative nonetheless and that’s what I want. Creativity. Well done 👍😉
That is truly quite brilliant. What a great use of existing machinery and obsolete parts. I am going to copy this.
Dope AF!!! GREAT IDEA...1 OF THE BEST PROJECTS ON THE CHANNEL!!!
The gear thing to remove the blade nut is just to cool. Love it
Using a guardless angle grinder on a running table saw blade! You’ve got some bowling balls.
This is the reason that I love DIY channels. Clever as hell!
DIY Channels are the best ;)
Good use of an old blade.
For those who are feeling lazy you can buy "sanding & calibration" discs for about £20-30 which will save the effort of making the toothless disc. These are precision ground and extra thick so should be nicely balanced and have more inertia for sanding.
Hii friend
Love the close up showing the sparks flying into the saw dust to trigger the safety seagulls :D
Another home run from our friend up North. You are an amazing engineer John, thank you for sharing your talent and skill with us. Very practical.
This has got to be one of the most insane things I've ever seen haha. Amazing.
😊😊😊
The pictures with plywood are impressive. Thank you for this video
ton outil pour visser la nut de la scie est vraiment ingénieux ainsi que edge sander
the amount of things built from plywood in the video made me sub.
Another awesome video showing just how neat you really are John!! love your stuff.
Great job on the sanding disk John! Thank you for sharing it with us!💖👍😎JP
Thanks John, you gave me a good idea what to do with the shit load of 230mm diamond discs that I have. I normally use it to make blades, chisels and cutters. Now I can make me some sanding pads as well.
You mention jointing, and that's where it would really shine for me, and maybe as kind of a thickness sander.
Excellent work and video, thank you.
Awesome! :) BTW. I liked the closing of the drawer with a foot. I don't feel alone in doing same thing now. :D
That blade holder is a dope idea👍
One of the best vids I have seen, its amazing thank you!
OOOOh smooth as silk, smooth as a baby's bottom, slicker than snot! That's a nice edge John, thumbs up.
Outstanding.......... I have lots of Old Blades and now know what to do with them.......
pretty cool. I have the double tapered sanding disc from Mike Farrington and its an amazing tool to use
That’s a great idea. I’ve already got the disc for my table saw, for sanding use. But hadn’t thought of a way of making it consistent and accurate.
Thanks for sharing.
👍😊
Very Cool... and it's the right price! Nothing new save for getting more sandpaper as needed!😎😎👍
🤔😲👍😎😃 That's Awesome!!! John You Come Up With Amazing Ideas!!! Thank You!!!!
This is brilliant John.
Fantastic! Now I have a purpose for the old sawblades
Hats off to you John. Nice idea
You are a very SMART man John.
How tha' fark can people give a "thumbs down" to this brilliant idea????
A really good idea!) Thank you!) My cutting blades have been waiting your video)
Fantastic work, John! Really brilliant idea! 😃
Stay safe there with your family! 🖖😊
I like the edge sanding plywood application!
The Shopsmith comes with a 12 inch disk sander that mounts on the motor shaft. Now I'll have to make a fence like yours for mine. Adhesive backed paper is available in many grits. Thanks for the fence idea!
The ol' walk away from an unclosed drawer and kick it technique. I'm an expert at that.
Hyyy sir 🤝
So like a sanding version of a jointer? That's brilliant!!!
Waw. What a Perfect Idea. Why are bad thinking guys using their brains in this way for a better world.
So that love can be spread without cheating on each other.
Companies need to take notice of innovative people like you. Carpenters build all kinds of jigs and things of this nature to either better existing tools , make them safer to use, or even have them serve another purpose. . I have my own little toolbox secrets that I use because some of what’s available out there doesn’t do the job as well as they should.
The genius never stops...
Very clever! And a pleasure to watch!
Good stuff John and congratulations on topping 1million subs 👍
Pretty slick John.
Love the grinder with no guard. Great idea. 👌
Love it John, you like taunting the safety police eh! LOL!
BRILLIANT!!! Great work!!
Super cool idea! Great video.
I already had this in my head for over a year if not much longer. But I was thinking of using a file to smooth the edges, where you used a grinding wheel. Not sure if I would try it but it would make the process faster, though hand filing doesn’t actually take too longer as the edges don’t need to be perfect either, just to remove burrs and remove and sharp edges.
The jointing is a good idea, not sure if I thought of it before. Not for every project but I can see it coming in handy.
1:10 those two floor spark shoots were very aesthetic.
Very neat idea John, and great use for old blades maybe in different grit sizes.. 👍🇬🇧
@john - I just watched a video of yours from 2013.... HOLY SHIT how far your channel has come. Congratulations man. great content. Keep it up
super cool idea and results
wow!
Great idea. Thanks John.
excellent job done !!!! john , i love it
I'm always impressed by how precise you are with an angle grinder.
I know this will probably come off the wrong way, but it’s not that hard, you just go up to the edge and grind down the rest
Thank you John!
Just another reason John is playing chess and we're playing checkers. Mike Farrington sells a tapered sanding disk for $150. John makes his own version from scrap materials for free. Very creative.
No such thing as free. The cost is in effort and tool time. You’ll have to assess your shop specifically to know which one makes more business sense
This is not compareable to farringtons, his will edge sand your pieces to final size, this will just take a little more off than you need after you sized your panels.
Good enough for some but not the same tool at all.
@@xerotolerant in John's case.. He did a project and video taped it to create content for his channel.
@@jayhitek for sure it makes sense for a hobby shop or DIY channels, no doubt about that
Similarly, 31 from CMT. But re-using a blade that might instead end up in a landfill is great.
Excellent craftmanship
You could use this like a joiner in a pinch. Neat idea.
I was eagerly awaiting the moment that you lathed that old blade on the Table Saw with a grinder. Was not disappointed.
Are you Fing kidding me with that free hand cut!?!?! I couldn’t make a circle that clean on a sheet of paper with a compass…..
You are amazingly ingenious!
Home made UniPlane! Kind of. Love your ingenuity.
I recently bought an old Craftsman attachment that is a sawblade with something like a two degree bevel on the face. Install in saw, and edge sand until the cows come home
This is so simple and genius!!
This is great! Thanks for this!
very inspiring thank you for sharing knowledge
Nice one John 👌
,Great idea! Nice work as usual.
That is brilliant!
Great idea! I also see you make a circle grinding jig in the future :)
You should add ASMR as a tag on this video, it was so satisfying and therapeutic to watch and listen to 😊
Another simple but ingenious use of the table saw John. The table saw is such a god-tier woodworking tool, and we're still figuring out new ways to use it.
You are a genius!
After the recent video on the Speakers channel, I was ready for the blind A-B comparison at the end. I'm sure I would have done better on this than listening with my ears. Neat idea.
This is genius
Just found this page
You got another follower 👍🏼
I read through all the comments. It's nice to not have to skim over the crybaby ones, "you're gonna hurt yourself." I imagine you've applied a "filter" to your comment section. I also imagine that "filter" is your finger, pushing a button.
This build is excellent! Definitely on my list to make one myself. Thanks, man!
Ok
Amazing idea
Love that idea 💡
great idea. i have seen people use similar blades but can be very expensive to buy.
Craftsman sold a slightly conical sanding disc ~40 years ago for 10’s of $ that I have used since to prepare edges for gluing. You need only tilt the disc so that the surface is vertical as measured by a square. The conical surface insures that contact is limited to a “line” which eliminates burning.
I have one I inherited. The combination of the very stiff disk and a fence like this should give really good results. Now I will have to go look around in the shop to find it
Brilliant!
Legitimately awesome
Wow, what a great idea
Very ingenious man.
Oh no, you did it again John. Safety police are going to on you again. Oversized cutting disc on the grinder, sparks flying into the sawdust on the floor. LOL Just like any other guy in the shop. I was thinking of getting an old saw and doing the same thing, but wasn't sure how to make a disc for it, now I do. Great video!
As always , nice idea .
Three thoughts, You can set up your fence more like a planner so that the relief after it goes through the sanding is not at the same elevation.
Secondly, I suggest cutting your disc much deeper into the plywood to allow air behind it, this will help it keep cool.
Sanding anything at this speed is very susceptible to burning, make sure that you're using adhesive that is heat resistant. ( 3M ) makes a product, not cheap!
Lastly cut your sandpaper after you glue it on.
Before I had an edge jointer, I made a fence where the backside was even with the blade and the front side was set back 1/32". When you run the side of the stock through, it does just that.......uses the blade as a jointer.
FYI: a planer makes a board the desired thickness. A jointer makes one edge or face true and flat.
@@muskokamike127 The difference in terms depends on what side of the pond you’re on. I believe the UK term for a jointer is a planer and a planer is a planer thicknesser
@@muskokamike127 I always thought a planet made both sides true and flat. Go figure
@@hemi4722 well, there are SOME that can do that, but the vast majority only do one side at a time......
Love it! I want one!
Great Idea, made well!
You're a master maker, John. Great editing. And as much as I enjoy (and learn from) your talking vids, an occasional one with no VO is really engaging.
Freud even has a sawblade that has textured teeth that sand the cut side of the workpiece equivalent to 160 grit.
Great idea!
Woodworking work || thanks you for sharing
Excellent idea