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When you cannot get the blade parallel to the miter slot!

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Forum topic by ForestGrl posted 10-04-2015 08:58 PM 756 views 1 time favorited 6 replies Add to Favorites Watch
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ForestGrl

445 posts in 550 days


10-04-2015 08:58 PM

Topic tags/keywords: adjust trunnions contractor saw blade parallel saw tune-up tip tablesaw

I’m starting this thread for members who, now or in the future, simply cannot seem to get their table saw blade parallel to the miter slot on a contractor saw or hybrid saw with table-mounted trunnions. If you’ve followed all of the directions in the numerous table saw tune-up articles and videos (such as this one ) and you’re thoroughly convinced something more drastic is needed (especially when the blade seems parallel at 90° but is quite out at 45°), then it’s time to read the following article. It is very important that you do not start drilling out mounting holes or making other huge changes, as that will just create other problems. Note that in the New Woodworker article linked above, the reader is cautioned not to make the trunnions too loose when adjusting. That alone can create the problem that the following article helps you solve.

When a saw gets really messed up is when the trunnions are no longer in the same plane, tie bars no longer parallel. This article presents a procedure that used to be on Delta’s website.

-- My mother said that anyone learning to cook needed a large dog to eat the mistakes. As a sculptor of wood I have always tried to keep a fireplace. (Norman Ridenour)


6 replies so far

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Paul

721 posts in 1029 days


#1 posted 10-04-2015 10:24 PM

Not really sure your linking of previous information deserves it’s own thread but thanks for the old info.

Paul

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lew

11340 posts in 3219 days


#2 posted 10-04-2015 10:41 PM

Something I have found, on my own saw (Bridgewood contractor), is that the greater the blade tilt, the greater the misalignment.

The heavy motor causes the rear of the rear of the blade to be off to the right (facing the saw). The play in the trunnion gears makes it virtually impossible to have perfect alignment when tilting the blade. To overcome the problem, I made an adjustable “lift” that pulls the motor/mount to bring the blade into alignment.

I just always need to remember to check the alignment when returning the blade to vertical.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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ForestGrl

445 posts in 550 days


#3 posted 10-05-2015 01:47 AM



Something I have found, on my own saw (Bridgewood contractor), is that the greater the blade tilt, the greater the misalignment.

The heavy motor causes the rear of the rear of the blade to be off to the right (facing the saw). The play in the trunnion gears makes it virtually impossible to have perfect alignment when tilting the blade. To overcome the problem, I made an adjustable “lift” that pulls the motor/mount to bring the blade into alignment.

I just always need to remember to check the alignment when returning the blade to vertical.

- lew

Absolutely true, and rarely revealed, LOL. Is there a picture somewhere of your “lift” here on LJ? Sounds like a good solution. Glad I don’t face that problem these days, it was a constant frustration with the old Jet saw, even after the “out-of-plane” problem was fixed. Long live Unisaw.

-- My mother said that anyone learning to cook needed a large dog to eat the mistakes. As a sculptor of wood I have always tried to keep a fireplace. (Norman Ridenour)

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ForestGrl

445 posts in 550 days


#4 posted 10-05-2015 01:57 AM



Not really sure your linking of previous information deserves it s own thread but thanks for the old info.

Paul

- Paul

Perhaps making it quite prominent is worth the aggravation. The information did not show up in this thread, and might have saved the OP some time and frustration. I’m not claiming any kind of major break-through here, just aiming to highlight something that is overlooked more often than not, with rather bothersome consequences.

-- My mother said that anyone learning to cook needed a large dog to eat the mistakes. As a sculptor of wood I have always tried to keep a fireplace. (Norman Ridenour)

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lew

11340 posts in 3219 days


#5 posted 10-05-2015 11:52 PM

I don’t think I ever posted the thing on LJs but here is a picture of what it looks like. Sorry I can’t show it in the actual position as the furnace guy is coming tomorrow and everything is stacked up around the saw.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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ForestGrl

445 posts in 550 days


#6 posted 10-06-2015 12:04 AM



[Snip]. Sorry I can t show it in the actual position as the furnace guy is coming tomorrow and everything is stacked up around the saw.

- lew

You have my sympathy!

-- My mother said that anyone learning to cook needed a large dog to eat the mistakes. As a sculptor of wood I have always tried to keep a fireplace. (Norman Ridenour)

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