I Made A Mistake Building My Crosscut Sled | 5 Cut Method Explained Again For Your Table saw Sled
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- Опубликовано: 7 авг 2020
- Yep, I made a big mistake in my previous video while calibrating my crosscut sled using the 5 cut method. For some reason, that I can't explain, I turned the test piece in the wrong direction for each cut. Doing this will simply make your crosscut sled be out of alignment.
So, in this video I go over how I corrected my mistake by going over how to do the 5 cut method correctly to check the accuracy of your table saw sled.
Link to my crosscut sled build video - • Easy Table Saw Sled Wi...
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Be sure to check out the build video on my crosscut sled. Still has lots of useful info even though I turned the test piece the wrong way😉 ruclips.net/video/SXjvwGlGN2w/видео.html
Takes a good man to admit he was wrong and to help others not make the same mistake!
I finally got around to making a sled after years of looking at different designs. Wanted to do the 5cut method and got nervous on if I could do it right. Thought I would get one of my kids to help. Then I came upon your RUclips. Made cuts on both sides of the blade just to see where I stood. I have a long fence and noticed a little gap in the center. So I clamped a 4’ level on the back of the fence and off I went. First test I was at + .0129. Followed your instructions. Made the adjustments. Then BAMM the next measurement was - .0027. Done!!!! Just had to find the right teacher for me. Thank you so very much
Not sure I'm the best teacher but glad it all worked out well for you! Thanks for watching!
Interesting video and tip for when I make mine. I’ll definitely be using these videos for reference!
Thank you and thanks for watching!
It's all part of the learning process, thanks for showing us how you did it.
You’re welcome and thanks for watching!👍
Good on you for clearing it up!
Thanks, it’s embarrassing but needed to be done. 👍
It really helps to avoid making the same mistake! Thanks a lot.
Happy to help!
Cool video
Thank you very much. After some hair pulling and 5 runs (of William Ng’s idea) I got it to .00022”. I am very happy! Subscribed
Glad I could help in any way. Thanks for watching!
Those who make errors do, those that don't don't do. Good job!
Well said👍 Thank you!
Excellent video,
Thank you and thanks for watching 👍
I think your putting out this video, and the honesty behind it, means more to me at least than the accuracy of the video. In the first one, it's kinda hard to see which way you're turning it unless you're looking for it, and you don't really explicitly say to put each cut edge against the fence you're squaring (there or here, really), so it's an easy mistake to miss since putting the cut edge to the fence each time is the intuitive maneuver. Turning it the way of your mistake just puts the un-cut and out-of-square sides up to the fence, which yields a meaningless 5th cut, since the purpose of the 5th cut is to show the accumulation of any error in the fence's angle, times the 4 sides. So good on you for putting out this correction, and for the further explanation! You've earned my sub, for what it's worth!
Thank you sir!
Well done mate for even trying this method, I just use a square to set the fence up to the blade. My head would explode using this method 😂 at least it's sorted now and we all make mistakes it's just ours are in front of the word😬😬
Thanks Karl👍 Well, go ahead and give it a try! It's not that hard when you know what your doing and do it the right way👍 And you now have two video to use as reference😉😆
Great Job!...by the way at the end you mentioned throwing a square on it....most squares are not square...those aluminum framing squares are notoriously out of square, though with a punch you can adjust them.
Very true. Currently all that I have are those framing squares you saw in the back ground. The black one I have tested and it's actually pretty darn close to square. The other one, not so much. It's on my list to get an actual square that will be actually square😀 Thanks for watching!
We're only human, good on ya
Yep, we are. Thanks for watching!
So what is better,to have a positive or negative result? Another thing,what is the maximum tolerance;whether positive or negative. Thank you for your answer,I am just an amateur doing things to relieve strees.
In my opinion there isn't a "better" as far as positive or negative. You just want to get a close to zero as possible. That goes for the maximum tolerance as well. Basically, do a cut test then test the cut with an actual "square" square. If it's not quite square, keep going with adjustments till you get it just right. And remember, the longer of a piece your cutting, the more magnified it will be out of square. So a 3" long piece will seem perfectly square but with the same cut at say 17", it will show out of square. Hope that make sense. Sometimes it's hard to type these out and make sense. If you have any more questions just let me know.
I don’t feel the positive/negative of the final result is important. It comes down to which end you measure the thickness of first that determines whether the result will be positive or negative.
Either way, if you adjust the left side of the fence forwards or backwards, you will wield the same result.
I done this a couple of times and dont understand why the error is getting bigger and bigger even though I move in the right up and down direction ! This is because I put the test piece on the other side of the blade. If i move the test piece on the side you are cutting and then i still apply the same up and down (or towards or away from you), then it should be right. I am going to try again tomorrow !! Thanks
Yep, I found that as well. That’s why I made sure to point that part out. Glad I could help and thanks for watching!👍
Clear explanation but I am wondering when doing the math the second time do you remeasure the distance between the pivot point and other screw given the distance has changed
I would say go ahead and do so even though the new distance is a minimal change. I was able to keep the new screw within a 1/4” so I personally didn’t worry about it. Guess it’s all about just how accurate you want to be👍
@@LTDWoodworks Thank you for getting back. Again your video was very helpful.
No problem, thanks for watching!👍
I appreciate your help. OK I’m a senior citizen and trying to do this right. Question??.?
I cut no 1....then put that cut against the fence and cut no 2. I couldn’t exactly see how you were turning the piece for the next cut.....at least for my senior eyes it wasn’t clear...it moved to fast to totally get the picture on how to turn the piece. I have the saw ready to adjust and won’t go any further until I understand every move
Thx.
Yes, sorry. I probably shouldn’t have sped up the video. Basically rotate the piece clock wise for each cut. Four cuts first cutting off just a little bit then rotate one more time still clockwise and make a wider cut around one inch wide. Hope that helps. Let me know if you have any other questions 👍
You basically just place the last side you just finished cutting to the fence untill you end up back where you started. If your sled is the slightest bit off that discrepancy will multiply by 2 every cut. If you were just to keep cutting and spinning it would actually result in a spiral if the angle is less or more than 90
That slight of a discrepancy may not seem like much but if you are working on something with lots of angles like say, an octagon, then your pieces won't fit together perfectly. Or if your working on a large piece it could cause a huge problem. Same reason framers use an 8ft level when checking walls for plumb. A small torpedo level may say your dead on but with a larger reference you could actually be several inches out of plumb
Very impressive. I feel ashamed that my sled is just "good enough for government work!" Thank you for sharing!
No problem 👍 Ya, I really need precision in some of the things I build like cutting boards etc. Thanks for watching!👍
So, what's your idea on how to add a ruler to your style of crosscut sled?
Ya, I really need to get around to adding that to my sled. I've been getting by just fine but it would be nice to have the ruler. The following link is what I have in mind. Basically a track on top of the fence that holds a smaller ruler and can have a flip stop as well if you wanted that style. amzn.to/3BwM1HS
There has to be a simpler way to assure square cuts. Are framing squares not allowed around a table saw? Is the fence not parallel with the blade? Is the blade not perpendicular to he table? And, can you detect these tolerances in real life projects? Not being critical, only asking how close can we be when using all wood components - all components of the sled - in a variable humidity and temperature environment such as our shop/garage/basement, etc.?
So in general, yes, I have detected these tolerances in real life. Example would be, well, cutting a square or rectangle just like the one doing the test cut. If that "square" were say a nice cutting board that you wanted to sell for good money, you would want it to be as perfect as possible. If not, by the time you went around and made the last cut, that last "90 degree" angle would be way off. Over the distance of a 20 inch cutting board and holding a square up to that last corner I have seen plenty of daylight under one edge of the square.
I'm sure the list of other examples could be quite large.
There's also many levels of quality to the actual table saw that would come in to play. My $500.00 saw does "ok" but I would imagine someones $4000.00 table saw would be MUCH better with it's tolerances.
The sled is also just easy to use and safe. Slap it on the table, lay your piece down, set your stop block and make as many crosscuts as you need.
Basically my opinion is it's all in the level of craftsmanship you want to perform. Fine woodworking, yes, as perfect as you can get it. Framing for a house, plenty of wiggle room will be fine so a framing square is perfect for that.
Can't speed square or any other square sort this out quicker than calculations?
You would think so but in reality the sled will be out of square. Not by much but enough if you are trying to do fine woodworking where the smallest of a fraction of an inch matters👍
Not to be difficult, but you talk about putting the screws back in to secure the length of the fence. If you use the same holes, you will simply be pushing your fence back out of alignment. When the fence is adjusted, all screws other than the pivot screw need to be relocated.
No worries. Yep, I did pre-drill new holes. One of them was shown at around the 8:47 mark. Don't think I showed the rest of them but yes, I used new hole locations. Thanks for watching!
Everyone makes mistrakes....
Yep, we do👍 Thanks for watching 👍
Great recovery mate, an d yes they will correct you! 😂😂😂. Thanks for the explanation on the numbers, I will redo mine as well... cheers.
Thank you. Yes, I'm glad someone noticed the issue. I'm much happier with the sled now that it's fixed. Nice and straight!