Using a Dado blade on a Dewalt jobsite tablesaw – can it be done?!?
Using a Dado blade on a Dewalt jobsite tablesaw – can it be done?!?
Dewalt Jobsite Tablesaw Model DW7480 with Freud 8″ Dado set. The manual says it’s not compatible – let’s test it out.
rule o dee thumb is two threads, BUT i wouldn’t trust this. i guess it might be alright in a pinch, but you should wear a suit of armor and a helmet.
That’s mad! A nut is only considered to be "in safety" when you have at least one whole thread to a a thread and a half protruding from the free side. You need maximum thread interlock to ensure it won’t undo. You’ll do yourself some serious harm.
you dont need all the spacer blades. just move you fence to make a wider dado.
You should always have thread past the nut utterly dangerous operation beware anyone who tries this
honestly after reading the many wise comments on why this should not be done, if I were you I would take the video down just to avoid having someone do what you did and get hurt pretty badly or even get killed.
Thousands of old Craftsman cabinet saws out there. I wouldn’t mess with this.
When tightening, don’t just hold the blades. Jam a sacrificial piece of wood to stop the rotation, then the teeth orientations won’t shift on you.
I don’t know much but that don’t look right.
Extremely dangerous stunt…
Don’t worry about the naysayers. Just concentrate on the mission, and proving the man wrong. Tools were made to be pushed to the limit…. If you think this is unsafe don’t use it.
You can safely use a two blade stack but that’s it
Insane! You’d be much safer messing with the Clintons
I have a Dewalt 7491 and a Dewalt 8” dado stack. The dado stack works perfectly fine with it with full thread contact on the nut with the arbor bolt and blade collar.
I’m confused. If the T.S. specicfically says in the owners manual not to modify or use a dado because of high risk of bodily harm, ……………help me understand, because this is confusing to a point.
This guy is a big time "wannabe" authority" – To begin with: There is NOT two threads on the arbor exposed (barely one thread – the first thread he is counting is a starting thread). Secondly: He says the nut is what he describes as "half way on". LOGIC DICTATES: If there are two threads exposed on the arbor after the baldes are installed then the nut only can go on with two threads. There are approximately (at most, six to seven threads inside the nut so the nut is NOT "half way" – barely one third of the way on. This is a VERY DANGEROUS venture. I give NO advocation to his presentation.
This is a terrible idea.
Is it safe to use 1 blade and a chipper to get a 3/16" cut or do both blades always have to be paired?
Sure you can slap the blades on the arbor like that, get a thinner dado Stack thay looks way sketchy as well as fast way to burn the motor up on that
Not just no, but hell no.
You must consider the blades center on the shoulderd portion of the shaft. Placing them on the threaded portion can allow for an improperly balanced part of the blad which can cause vibrations. This could damage the threads on the shaft as well as wear the bearing out in the saw. Though it can be done and I will be doing this myself I will only go as wide as the shoulder on the shaft permits.
You are crazy ! What happens when your arbor nut comes loose ? I hope you have a life insurance policy for your poor family
Awesome thanks! I would probably keep half inch as my max.
this gives me peace of mind and expands the use of my saw. Thanks for putting this video/ test out. Much appreciated.
Well this is dumb…
I use a adjustable wobble blade
I have the same table saw, glad that worked.. gonna get some blades
Hi, I made this axis change, I did it as it is in the video and it works perfectly with the freud 8” dice. I leave the link of the video https://youtu.be/kZxp7YE_n_w
Take One of the middle blades off. Sweet as
I have a dewalt 7485. Going all the way to 5/8 seems scary but if I were to just do 1/4 dado would anyone recommend that? I’m assuming I would have more thread for the bolt.
Oh hell nooooo no thank you spinning spiky danger ⚠️
Don’t do this people! Very dangerous.
From the video your saw bench makes less noise than mine maybe it’s an impression?
HAHAHA. No f’n way I’m doing that but watching folks clutch their pearls in the comments is the best part of the video.
Hi Red, nice try! Thx for this demonstration ! The DeWALT Saws have a great torque, and if it stays tight after more times on and off is the question! Even with 1 Blade if you don,t thight the Nut enough it comes loose! Happened to me the very first time, Blade stays on the arbor SPINNING FREE until it hits something like the Riving Knive mount or so! Took 2 teeth out of my Blade, and a bit of damage underside insert that was all !!!
Didn,t fly out of the machine!!
Better make the stack thinner so the nut will fully engage the Arbor!
Btw, the 7492 has Dado Capability!!!
I’m scared to go this route but do use an Oshlun 8" Finger/Box Joint 2-blade set. Depending on how you orient them, you get a 1/4" or 3/8" cut/groove/dado (check throatplate clearance on the 3/8" setup. You may have to create a custom throat plate or file off an edge of the factory plate when using it this way. I did). The caveat is that the second blade is resting on some of the arbor threads (but not enough to keep the nut from fully engaging). At first, this was not a problem. Over time though, it has caused a few of the threads nearest the solid portion of the arbor to become flat. Now I get a very small (1/128"?) height differential on half of the cut. I.e., the blades still cut flat but half the cut is offset. I will assume the second blade is "wobbling" somewhat on the threads that have flattened. If it is wobbling, it’s so slight that the human eye cannot detect it. This is not a major problem but does require, in some instances, sanding or chisel work if you want your mating piece to be completely flush with your cut. Over time, using multiple blades to form a dado may cause the same problem if they are resting on some of the threads.
Also, I will at times, use just one of the blades to create a small (5mm?) groove to accept box bottoms on my pieces or to cut a small rabbet/rebate when needed. Each blade has 30 teeth so I feel safe using it this way but keep my cuts nowhere deeper than 1/4" at a time or even less with harder woods.
sketchy as fuck.
Physical space is not necessarily the reason DeWalt states this saw is not compatible with a dado stack. There’s also the limits of the motor to consider. It’s far more stress on the motor to make a 5/8" cut than a 1/8" cut. Clearly it can be done as indicated in this video, but you could also be dramatically shortening the life of your saw.
I have the DWE7485 model of this saw (2021) and there is a metal guard in the dust collection shroud that limits the width of what you can put on the arbour. Others in the thread have suggested the Freud box joint blade pair that support 1/4" and 3/8" cuts. On the 7485, you can only use the 1/4" option as the 3/8" option would result in the blade hitting the guard.
Just remove 1 chipper and be safer !
Your sound socks turn it up or go home
The Metabo saw has a long arbor if dadoing is important to you.
No thanks, I’d rather use my router table.
Regrettably, whilst the demonstration “looks” convincing it none-the-less pushes the boundaries of good engineering prudence. Yes, the demo went well- as far as it goes – but relying on just 2 to 3 threads to hold what is a relatively massive blade on to the arbor is indeed tempting providence! Sticking my neck out here, I would say, as a time served engineer and a qualified production engineer ( retired over 20 years ago) the minimum engagement of the nut on the arbor must be equal to the thickness off the nut; more if possible under trying conditions, like cutting tough timber on a major scale.
I have an older model, the DW 745, which has a 10” blade. It will not support a dado stack either. As others have commented, what’s going on in this video is not a great idea. What I’ve done as a workaround to this limitation is to use a box joint cutter set instead. The one I have is from Freud, It has two blades that nest together. They can make either a 1/4” or 3/8” kerf, depending on how you orient the cutters. This particular setup can thread onto the arbor securely. Obviously it’s not a real dado cutter, you can’t make any adjustments to it. But it does cut 3/8” wide just fine, and it seems pretty safe.
This is simply stupid.
I’d be much more concerned with life changing injuries to myself or another person than the saw itself.
Later models have a metal strip near the blade that stops the use of dados almost all together. I can get 1/4" at most
Very good table saw.
If you really want to do that change the arbor out the arbors work on several different models there’s videos out there with people showing you that the arbors on the dado work on other models. It’s about 100 bucks total but to save yourself from getting killed it’s worth it the 745 does have a smaller motor and will after awhile wear it out.
I have the same awesome saw and I can safely use a Freud 2-blade 1/4 & 3/8" reversible blade pair on this saw. I just run the board through twice to get a wider dado. Thanks for showing others about the feature that swayed me to get this used Dewalt over the newer ones.👍
Totally safe. What could happen?