Kerfmaker Exact Width Dado Jig / Make Perfect Dados!

Here is an easy-to-make table saw jig that will let you cut perfect dados with only the use of a single table saw blade. This woodworking jig is made from scrap hardwood and a few bits of hardware found in almost every workshop.
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[@j.wheelerhammontree405]

Still the absolute best kerf maker video to be found!

[@2011ibex]

It's one of the simplest solutions I have ever seen! Thanks!

[@raulpena3472]

I really liked this video and I have made some for me and my son. The only difference between the ones I made and yours is that I made the rabbet with a dovetail router bit so that the bottom of the of the rabbets are at an angle and that prevents them from slipping out when the screw is loosened up. That also tightens them up against each other when when you tighten up the screws. Keep up the great work.

[@jameslee173]

That's a good idea with the dovetail bit....kinda like a French cleat!

[@dan_g-DreadMassaker]

Just build this jig because your version is so easy to make without many special tools. I even did the rabbet with my tablesaw and it works perfectly. I also like that a sloted hole for the screw is not necessary because it clamps nicely.

[@SMee67]

Those kerf makers do make life easier, especially if you have a heap to cut. 😋 Cheers for sharing, mate👍 Hope you have a super time at the Wood Show.👌

[@knecht105]

You're welcome, Bill! Thanks for watching.

[@GMAN420BC]

I was seriously thinking of buying the Bridge Machine kerfmaker but not no more. I'm going to go make one of those after lunch. Thanks Colin.

[@knecht105]

You're welcome! Thanks for watching!

[@MarkMcCluney]

Nice little gizmo and, as always, very watchable vid. Thanks Colin and have fun in Atlanta!

[@knecht105]

You're welcome, Mark! Thanks for watching.

[@bret_Lambky]

I made this gauge; I don’t use it every day. But it is a great addition to my toolbox!

[@borimex5844]

Hey Colin, this jig is absolute genius. Will definitely make one.

[@bret_Lambky]

I made this and it works great! Simple tools, simply work!

[@jimbob8712]

Great video. Thanks, Colin!

[@huwdavies5264]

This will be invaluable to me as I am not able to fir a dado set to my table saw. Thanks Colin

[@knecht105]

You're welcome! Thanks for watching!

[@DonDIYProject]

I also wanted to build that jig, Pask Makes build that same jig last July. I really think it's a great jig for a perfect dado slot. Thanks for reminding me.

[@knecht105]

You're welcome! Thanks for watching!

[@jerryjohnsonii4181]

Absolutely awesome dado jig. Dado cutting is my favorite joint an i use it alot in my furniture making projects. This jig is going to help me out alot. Thanks for the knowledge Sir

[@knecht105]

You're welcome! Thanks for watching!

[@funnyguy55able]

I didnt realize you were Canadian until I saw the Roberts head screw. I feel bad for Americans having to use Phillips head screws and stripping them constantly. Keep up the great content.

[@stevanfarmer8124]

These things are fascinating. Thanks Colin.

[@knecht105]

You're Welcome!

[@mikereslie3389]

Very cool jig. I'll definitely be making one of those. I will probably figure out how to adapt the concept to a Dado stack. Just FYI, in the US, the wide washers as you called them are sold as "Fender Washers".

[@knecht105]

Thanks for the tip and thanks for watching!

[@GMAN420BC]

They are called that in Canada too.

[@Thom4123]

I really like your design the best easy but very accurate. Another must have jig. Have fun in Atlanta!!!

[@knecht105]

Thanks for watching!

[@MrMarkpeggy]

What a cool idea for a jig! Thanks for sharing Colin. I hope that you have a great time at the woodworking show!

[@saundersd1962]

I was wondering how to perfect dado cuts for a large cupboard I want to make and up pops this video the next day. Perfect timing, thanks Colin

[@CharlesReiche]

You're great at publishing these videos about 3 days before I need them! Thank you for another great one!

[@knecht105]

You're welcome! Thanks for watching!

[@notcharles]

Nice one. Thanks for Sharing.

[@sapelesteve]

Nicely done Colin. I am going to bookmark this video for later use so that I can construct one of those jigs. Thanks a lot...................... :)

[@knecht105]

Hope it helps! Thanks for watching, Steve.

[@weekendwarrior9570]

Excellent video and process. Thank you for sharing.

[@petercowell2051]

Very nice Colin.Thank you.

[@knecht105]

You're Welcome!

[@k13ehr]

That one went right over my head Colin, we don't have dado blues here in the UK.

[@robertbrunston5406]

Very good! Thanks Colin

[@knecht105]

You're welcome! Thanks for watching!

[@davidwoolsey2300]

I'll be making one of these for my mitre saw...

[@MarkPrimavera]

Hi Colin, great jig and great video. I made one up yesterday, it took me me two tries to make the rabbet cut and is actually a good exercise in using the router table. ~Cheers from Ontario

[@dkbuilds]

Great jig! This is my first hearing of this kind of jig. No more eyeballing dado widths for me!

[@rjtumble]

Nice! Neat jig and I'll see you in March! Welcome to Atlanta.

[@knecht105]

Thanks for watching! See you in March!

[@ericgee6585]

@@knecht105 Nope. Not this March !!

[@hang-on4807]

Very Simple, Very nice.

[@knecht105]

Thank You!

[@Yahoomediaclub]

Brilliance as usual..love the Jig ⭐️⭐️⭐️⭐️⭐️

[@knecht105]

You're welcome! Thanks for watching!

[@asifchangazi9025]

Yea that is really a very simple and helpfull jig...

[@knecht105]

Thank You!

[@Mosa-166]

A necessary jig! Thanks.

[@knecht105]

You're Welcome!

[@topsaw]

Great video, great channel. I teach high school woodshop and we have always had problems using a table saw blade for Dados, we will try this

[@billygarfield5520]

Really, really good jig!

[@knecht105]

Thank You!

[@perryring1696]

thanks great video

[@jgriff19861947]

Thanks for so many great ideals

[@knecht105]

You're Welcome, Harvey!

[@wm005]

Great video. I always enjoy your channel. Always watching and learning...

[@knecht105]

Thanks for watching!

[@Bramsshed1913]

That's a great little jig as my table saw is not compatible for use with dado blades. Cheers, Bram

[@knecht105]

Hope it helps! Thanks for watching!

[@lutzhegemann5103]

Nice job as always. It‘s so sympathic how you giggle when you forgot to mention something :-)

[@elaprendiz007]

Great jig, thanks Colin, greetings!

[@knecht105]

You're welcome! Thanks for watching!

[@blackemmons]

Nice. Looks like a version of my KM-1 Kerfmaker.

[@gerrygilmore4337]

You always make such great videos Thank you. OBW those wide washers are called fender washers.

[@knecht105]

Thanks for the tip and thanks for watching!

[@Alsaaahir2]

Great idea thank you sir شكراً جزيلاً لك

[@knecht105]

Thanks for watching!

[@hiseminencetheholymacdiarmada]

I made one of these, actually two because I hade enough wood left after the first. It came out very nice and I was excited to use it. Imagine my dismay when I figured out that I need a crosscut sled to use it and I don’t have one! Anybody wanna buy one? I have two, made from nice red oak. I even put flex seal tape on the bottom of the washer for added grip.

[@jorgereyna7622]

Good teacher Hello from guatemala

[@cymeriandesigns]

To make life easier, make sure to use a flat-tooth-grind saw blade so that you don't have grooves to clean up in the bottom of the dado cut.

[@mydreams299]

Thanks a lot 👍👍

[@rjperkins365]

That's cool, never would've thought of that and looks to have worked great

[@knecht105]

Thank You!

[@bigsparky65]

Another fantastic tip, i own a metal version

[@BladeforgerKLX]

Nice job, Colin! Thanks!!

[@maxximumb]

Neat little gadget.

[@knecht105]

Thank You, Maxx!

[@fredsasse9973]

The larger diameter washer is sometimes referred to as a "fender washer". You an find them at most hardware stores (True Value, Ace, Do It Best, etc.). Most of those have the section with bins of assorted size bolts, nuts, etc. that includes fender washers. I don't think the big box stores have that option.

[@GRINwood]

Good job! The only problem with super glue is that it is SUPER sticky to fingers ))) i like your videos

[@knecht105]

Thanks for watching!

[@horaciocastillo3082]

thanks for sharing!!! I like you tips....

[@knecht105]

Thank You!

[@jamies8973]

How would you use the kerfmaker jig if you have to make multiple dados in a long board, such as found in cabinet sides?

[@chrissewell1608]

WHAT? Atlanta has wood working show in March? Why is this Never advertised? When & where? Great video Collin, Thanks.

[@skippylippy547]

www.thewoodworkingshows.com/atlanta.html

[@knecht105]

Yup, its a good one too!

[@chrissewell1608]

@@skippylippy547 Thank you! I'll check it out!

[@kennelson7591]

Great little jig Colin guess I won’t make Atlanta as in auK lol

[@rjmiller8330]

Fender washer

[@fercortesr]

Thank you Colin, I follow your instructions but sometimes I have the dado too tied and sometimes so lazy do you know what could be the reason? I was thinking that maybe the adjustement of the screw is tha cause of the issue? Any thoughts ? Thank you for your videos very useful!!!!

[@fiberinspector1304]

Well explained video, thanks

[@knecht105]

You're Welcome!

[@MikeTN]

Great jig. Q. Would a Flat Top Grind blade be preferred with this jig so there are no "ridges" at the bottom of the dado cut to remove later?

[@handcraftedbychris]

Great jig sir. By the way, did you make your wooden wrist watch yourself and care to show us how to make it some other time?

[@timlist4173]

does it make a difference what side the wing nut is?

[@killerpixel2k3]

great video, but can you explain the purpose of the screw and how far it has to be out of the wood when you use the jig? It sounds like it has something to do with the blade width, but I'm not 100% there. Thanks!

[@DonDIYProject]

You're right, it has something to do with the blade. Because every saw blade has a different thickness, you'll need to adjust the screw to the same thickness of the kerf of your saw blade.

[@halsonger1317]

You set the wood part of the jig on one side of the saw tooth and adjust the screw so that it's dead even with the other side of the saw tooth. Every saw blade you have will be a little different in that width so you need to tweak it as part of your setup. The screw provides a micro-adjustable offset to compensate for the blade width. If you didn't have the offset the width of your dadoes made with the jig could be off as much as 1/8". You can set the screw head slightly proud or shy of the tooth edge to make your dadoes slightly looser or tighter if you desire.

[@DonDIYProject]

@@halsonger1317 very well said.

[@safelinefleet6633]

Your're right - it has something to do with the blade. It is essentially to reduce the reference edge by a thickness just equal or very slightly less than the thickness of the blade. Without the screw reference, you would end up with a dado that is the width you want , plus the thickness of the blade. That screw will now reference your cut to be less than the set depth, and you will end up with a dado to the set width, which essentially takes the calculation and guesswork off the process.

[@reformajabh-wellisonpaixao6854]

Muito bom

[@knecht105]

Thank You!

[@eddododo]

Hey Colin.. I’m just curious regarding the screw used as the blade width.. is there some reason to use a screw, rather than just cutting one of the pieces a blade shorter than the other (let’s assume we can accurately make that cut).. In so many of these kerfmaker videos the screw component is ubiquitous, so I’m just curious why it’s preferred.. thanks for all the content!

[@yurachango]

To be able to accommodate blades of various thickness when needed? Not sure myself...

[@hiseminencetheholymacdiarmada]

Why must it be made from hardwood? I have a big pile of off cuts of pine and thought I would make one from it, but pine isn’t hardwood. If it’s a question of durability, couldn’t I still make it from the pine since I will only use it to make 3 to 5 dados and still be ok?

[@Roderick_Legato]

6:15 That wide washer is called a "fender washer".

[@ClayVella]

Does the thickness of the end piece make a difference to the jig?

[@donsch6766]

No

[@knecht105]

Nope. Thanks for watching!

[@fistofthenorthend204]

What is a kerf?

[@davidmartin6927]

What brand miter are you using in your tablesaw?

[@befmx31]

That was an Incra

[@knecht105]

It's an Incra. Here's the video on it kzbin.info/www/bejne/Y3O9iKyaqt2JkLM

[@wayneburba9457]

Brad point bit would work second .

[@ivokolarik8290]

👍

[@seagnatprepper9613]

Collin … going off subject … did you get your watch from maui kool …. my wife got me one for Christmas and it has a blue face … other than that, they look the same

[@knecht105]

I grabbed mine from Amazon.com

[@edcrego396]

Need to explain yourself better you said you leave the screw a little prod what do you mean the in side out side of the screw how do you now how far to cut out the dado

[@charlesreohr6236]

Sounds better than spending $100.00 plus for a dado blade and wasted time changing the width.

[@titodejesus6238]

Man I love you videos but....can you keep what you are doing in the shot? ( use 2 cameras or one with WIDE ANGLE). Also a script will help avoid forgetting important things

[@NavinBetamax]

Do you watch your videos before and after you edit them before uploading to KZbin ?!....

[@amirhouseingholinia2023]

Why not a dado set؟

[@ClayVella]

Some table saws in Europe don't have an arbour long enough for dado stacks. 😕

[@huwdavies5264]

As ClayVella says, not all table saws have an arbour long enough for a dado set, mine included, I also live in the UK.

[@Dragonited]

As it is required by law to have a motor brake in European sold table saws a dado stack does not normally work because the extra mass could make the locking nut come loose. Though some cabinet saws have another solution so that a dado stack can be used. Axminister in the UK has one type that can host a dado stack.

[@joycemiller4716]

Just import an America saw dado no problem i did

[@DonDIYProject]

Because it's a kerf maker jig for exact width dado. You don't have to measure the dado slot that your going to make, the jig will measure it for you perfectly.

[@stevenwilliams1915]

Terrible instructional video. Lots of action outside of the camera view. Very un-precise language as the presenter goes through the process...

[@EYALAVRAHAMI]

At least cradit pask makes...

[@Dragonited]

He might not have seen that video and came up with the same idea as well.

[@DonDIYProject]

Yes, pask makes build that same jig july last year.

[@Dragonited]

@@DonDIYProjectYes I know. I saw that clip too. I mean that Colin might not have seen it and therefore don't have to give Pask Makes credit because he didn't know that it has been done before. It's not like it's a very complicated design and it could just as likely have been from a woodworking book that both Pask Makes and Colin got the idea from.

[@maddogshwa]

I suspect pask got this from somewhere.

[@jrsmez]

There are many versions of kerf makers out there. This is not a new concept, just another way to show how it can be done. Maybe do a little research before commenting next time. Also, credit is spelled with an e.