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#1
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How do I align my table saw blade parallel to my miter slot?
Hello all,
on my Delta table saw 36-979 it offers the following advice for aligning the miter slots to the blade. On page 24 of the delta manual for table saw model 36-979 the adjustment for the blade parallel to the miter slot is not working for me. In figure 68 it says to loosen 2 hex bolts B that hold the rear trunnion C and pound trunnion C until the blade is centered in the table insert. I pounded that thing for 10 minutes and it did not budge once. The front of the blade is skewed inward slightly (1/32 to 1/16) compared to the rear of the blade and it is nowhere near the center of the table insert. What am I doing wrong that I cannot budge this trunnion? Please offer help if you have had this problem before. Thanks. |
#2
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How do I align my table saw blade parallel to my miter slot?
Well, how many bolts hold the trunnion in place? I'm betting it's not
just two... Tom wrote: Hello all, on my Delta table saw 36-979 it offers the following advice for aligning the miter slots to the blade. On page 24 of the delta manual for table saw model 36-979 the adjustment for the blade parallel to the miter slot is not working for me. In figure 68 it says to loosen 2 hex bolts B that hold the rear trunnion C and pound trunnion C until the blade is centered in the table insert. I pounded that thing for 10 minutes and it did not budge once. The front of the blade is skewed inward slightly (1/32 to 1/16) compared to the rear of the blade and it is nowhere near the center of the table insert. What am I doing wrong that I cannot budge this trunnion? Please offer help if you have had this problem before. Thanks. |
#3
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How do I align my table saw blade parallel to my miter slot?
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#4
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How do I align my table saw blade parallel to my miter slot?
"Joe Bemier" wrote in message However, FWIW, the blade should be aligned to the fence and then the slot to the blade. How do you align the slot to the blade since the slot is fixed in the table top iron? Everything should start with the most difficult to align to the easiest. So in order, it goes slot (which is fixed) then align the blade to be parallel with that slot, then align the fence to be parallel to the blade. If there's some other method then please tell me, I'm all ears. |
#5
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How do I align my table saw blade parallel to my miter slot?
Hey Joe,
Are you sure this is what you meant, " However, FWIW, the blade should be aligned to the fence and then the slot to the blade.". The slot is part of the table so you should be adjusting the trunions and blade relative to it. Any fence sytem should then be adjusted to the blade, or to the slot, since the slot is the reference point of blade alignment. By the way to Rugby17, are the slots paralell? I hope there was not a machining error at the factory but it won't hurt to check this detail. Marc |
#6
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How do I align my table saw blade parallel to my miter slot?
Joe Bemier wrote: I guess you should be OK if what you are doing is described in the manual. However, FWIW, the blade should be aligned to the fence and then the slot to the blade. Do not align the blade to the slot (as in your subject line) Maybe its just the arrangement of terms. Align the blade to the slot. Most fences are attached to the table. When making the second adjustment you propose (aligning the slot) the fence will no longer be in alignment. Also, the fence is not a precise alignment. I believe the offset is about 1/64 to the right (away from the blade) at the rear of the table. Yes, this does cause the potential for kickback when the fence is used on the left of the blade so adjust accordingly. To align my blade to the slot, I used two drafting triangles with a square steel insert in the slot. Works great |
#7
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How do I align my table saw blade parallel to my miter slot?
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#8
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How do I align my table saw blade parallel to my miter slot?
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#10
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How do I align my table saw blade parallel to my miter slot?
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#11
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How do I align my table saw blade parallel to my miter slot?
On Thu, 26 Oct 2006 06:47:52 -0400, "Upscale"
wrote: "Joe Bemier" wrote in message However, FWIW, the blade should be aligned to the fence and then the slot to the blade. How do you align the slot to the blade since the slot is fixed in the table top iron? Everything should start with the most difficult to align to the easiest. So in order, it goes slot (which is fixed) then align the blade to be parallel with that slot, then align the fence to be parallel to the blade. If there's some other method then please tell me, I'm all ears. Well, it seems you use the factory insert - I don't. I have a variety of inserts - all shop made to provide riving knife, zero clearance, etc But even if I did use the original I would set my saw up Fence-Blade-Slot. The slot is a default position (it ends up where it ends up) after the fence-blade is correct. IMO, you should start with alignment of the fence parallel to the table...then fence to blade ...then the slot is defaulted. However, in any well made machine there should not be too much adjustment of the slot required if you follow the above. I'd suggest that the slot is nothing but a hole that belongs where the blade come up after proper alignment of the critical parts. |
#12
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How do I align my table saw blade parallel to my miter slot?
"Joe Bemier" wrote in message I'd suggest that the slot is nothing but a hole that belongs where the blade come up after proper alignment of the critical parts. I'm referring to the mitre slot that runs the width of the table saw, not the insert with the slot that the blade comes through. The insert has absolutely nothing to do with the alignment of the blade other than sitting properly without touching the blade. |
#13
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How do I align my table saw blade parallel to my miter slot?
On Thu, 26 Oct 2006 18:38:12 -0400, "Upscale"
wrote: "Joe Bemier" wrote in message I'd suggest that the slot is nothing but a hole that belongs where the blade come up after proper alignment of the critical parts. I'm referring to the mitre slot that runs the width of the table saw, not the insert with the slot that the blade comes through. The insert has absolutely nothing to do with the alignment of the blade other than sitting properly without touching the blade. My mistake! Apologies for misinterpreting the original message. |
#14
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How do I align my table saw blade parallel to my miter slot?
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#15
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How do I align my table saw blade parallel to my miter slot?
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#16
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How do I align my table saw blade parallel to my miter slot?
Hi Joe,
I would beg to differ. As the manual describes, the blade and the fence should both be aligned parallel to the miter slot. The miter slot is long and machined, making it a good alignment reference. As you have described it, the blade would be the alignment reference. This would be OK except for the fact that the blade is short and usually warped. It's like the small rudder being used to turn a large ship. A small warp in the short blade will be magnified by the long length of the fence and the miter slot. This is more important than most people realize since as little as 0.005" of misalignment can adversely affect the quality of the cut. Reading through other responses I recognize yet another problem. Whenever possible, you want to make sure your alignment proceedure is "order independent". In other words, you don't want one step to adversely affect the accuracy of another step. For example, if you use the blade as your alignment reference, then your blade/slot alignment will adversely affect the accuracy of the blade/fence alginment. So, you are forced to do the blade/slot alignment first, then the blade/fence alignment. If you use the miter slot as your reference, then the blade/slot alignment is independent of the fence/slot alignment. Changing one will not adversely affect the other. Finally, I also noticed someone recommend adjusting the fence "about 1/64 to the right (away from the blade) at the rear of the table". This is not a bad idea if you are using a subjective ("feel the rub" or "hear the scrape") method for alignment. It gives you some safety margin to avoid misalignment which could cause kickback. Be careful though, the 1/64" (0.015") refers to a slot/fence alignment ("at the rear of the table"). NOT a blade/fence alignment. If you align your fence so that it is 1/64" away at the rear of the blade it will create a very dangerous misalignment. Another precaution with this recommendation - if you notice a tendency for stock to wander away from the fence during a rip cut then you have adjusted it way too much. Of course, if you use a dial indicator for alignment then this practice is not needed. Ed Bennett http://www.ts-aligner.com Joe Bemier wrote: I guess you should be OK if what you are doing is described in the manual. However, FWIW, the blade should be aligned to the fence and then the slot to the blade. Do not align the blade to the slot (as in your subject line) Maybe its just the arrangement of terms. |
#17
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How do I align my table saw blade parallel to my miter slot?
Hey Ed,
I made an error in reading the original message. For some reason I thought the OP was talking about the insert slot. Thus you are correct and sorry for the confusion. Thx, J On 28 Oct 2006 13:31:55 -0700, wrote: Hi Joe, I would beg to differ. As the manual describes, the blade and the fence should both be aligned parallel to the miter slot. The miter slot is long and machined, making it a good alignment reference. As you have described it, the blade would be the alignment reference. This would be OK except for the fact that the blade is short and usually warped. It's like the small rudder being used to turn a large ship. A small warp in the short blade will be magnified by the long length of the fence and the miter slot. This is more important than most people realize since as little as 0.005" of misalignment can adversely affect the quality of the cut. Reading through other responses I recognize yet another problem. Whenever possible, you want to make sure your alignment proceedure is "order independent". In other words, you don't want one step to adversely affect the accuracy of another step. For example, if you use the blade as your alignment reference, then your blade/slot alignment will adversely affect the accuracy of the blade/fence alginment. So, you are forced to do the blade/slot alignment first, then the blade/fence alignment. If you use the miter slot as your reference, then the blade/slot alignment is independent of the fence/slot alignment. Changing one will not adversely affect the other. Finally, I also noticed someone recommend adjusting the fence "about 1/64 to the right (away from the blade) at the rear of the table". This is not a bad idea if you are using a subjective ("feel the rub" or "hear the scrape") method for alignment. It gives you some safety margin to avoid misalignment which could cause kickback. Be careful though, the 1/64" (0.015") refers to a slot/fence alignment ("at the rear of the table"). NOT a blade/fence alignment. If you align your fence so that it is 1/64" away at the rear of the blade it will create a very dangerous misalignment. Another precaution with this recommendation - if you notice a tendency for stock to wander away from the fence during a rip cut then you have adjusted it way too much. Of course, if you use a dial indicator for alignment then this practice is not needed. Ed Bennett http://www.ts-aligner.com Joe Bemier wrote: I guess you should be OK if what you are doing is described in the manual. However, FWIW, the blade should be aligned to the fence and then the slot to the blade. Do not align the blade to the slot (as in your subject line) Maybe its just the arrangement of terms. |
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