Problems With Fence On Delta Unisaw - Router Forums
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post #1 of 12 (permalink) Old 01-24-2013, 10:00 PM Thread Starter
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Default Problems With Fence On Delta Unisaw

I have recently been reading some reviews on the Delta Unisaw. The writer of one of the reviews talked about a problem with the curson in regard to it being difficult to make a critical setting. Since I am an advocate of the Incra LS Fence Positioner System I wonder if anybody has any comment on quality of the Biesmeyer Fence System that comes with the saw and if one should just plan on buying the upgrade fence from Incra. Sure seems like for the price of the saw that one should get a decent fence with it.

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post #2 of 12 (permalink) Old 01-24-2013, 11:49 PM
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Quote:
Originally Posted by Jerry Bowen View Post
I have recently been reading some reviews on the Delta Unisaw. The writer of one of the reviews talked about a problem with the curson in regard to it being difficult to make a critical setting. Since I am an advocate of the Incra LS Fence Positioner System I wonder if anybody has any comment on quality of the Biesmeyer Fence System that comes with the saw and if one should just plan on buying the upgrade fence from Incra. Sure seems like for the price of the saw that one should get a decent fence with it.

Jerry
Jerry-

The Biesmeyer Fence is the most popular and most copied fence system in the world. That is their own claim. It is a fence system that most people factor in and think about upgrading to.

The Biesmeyer fence from Beismeyer had separate cursors and tapes for left and right sides.

The Industrial fence had one cursor (see attached)

Look at the pic I attached... Most problems reported about problems getting an accurate setting doesn't have to do with the fence system itself persay, it's the cursor itself in relation to the scale... which can be mod'ed to remedy that.

Sometimes when adjusted, the cursor sits above the scale, so as you look at it and move your head side-to-side, the person's perspective of where that cursor falls on the scale is changed. Does that make sense? Some fix that by lowering the cursor by mounting it under the fence lip to move it closer to the scale. Others have made their own cursors that lay closer to the scale. But the best fix I heard was this: (User bought Bies cursor from Powermatic and installed on his)

"the powermatic cursor sits real tight to the tape and just has a thin etched line on it making it easy to read. i later bought a wixey digital read out and attached that to my fence it is real nice and super acurate"

OEM Beismeyer fences are not born equal and there are minor changes per each saw manufacturer. IMHO, the fence straight from Biesemeyer is better.
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post #3 of 12 (permalink) Old 01-25-2013, 03:50 AM
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"The writer of one of the reviews talked about a problem with the curson in regard to it being difficult to make a critical setting."

From what I have seen in the magazine industry, the writer is probably a moron.

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post #4 of 12 (permalink) Old 01-25-2013, 11:31 AM Thread Starter
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"The writer of one of the reviews talked about a problem with the curson in regard to it being difficult to make a critical setting."

From what I have seen in the magazine industry, the writer is probably a moron.

Don
Actually the writer was complaining about the cursor as descriped in the post earlier and he remedied the problem with his own modification. The problem, as I recall, was that the curso was so far from the scale that the issue of parallex was what had to be fixed and he did so. I am aware that the Biesmeyer fence is very popular, but wonder how it compares to the Incra System since I have the Incra and like it so much. I've never heard of anybody complaining about the cursor on the Incra besides myself and I have had to modify it on my system to elimiate parallex and make it easier for me to see due my personal vision problem. I might add that the accuracy provided by the Incra system might be over kill for the majority of useres as after getting acquainted with this forum I have learned that most folks aren't of the opinion that such accuracy is not of much value due to the fact that wood is so unstable and I do see their point. A system that gets you into a 1/32" inch ball is probably adequate in the real world.

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post #5 of 12 (permalink) Old 01-25-2013, 12:21 PM
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Been using a Biesmeyer fence for over 30 years. Like it a lot. As always, I never trust any preset type of measuring device so always measure the distance myself. Also don't depend on the angle gauge or heigth, always measure w/ one of the digital devices. Went to digital years ago, upgrade as the industery progresses. Great results. Again, reley on nothing but yourself.
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post #6 of 12 (permalink) Old 01-25-2013, 12:24 PM
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I don't pay attention to the tape. I measure from the blade to the fence either with my measuring stick (ruler) or set up blocks if the size works.
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post #7 of 12 (permalink) Old 01-25-2013, 01:14 PM
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I do the same, in that the scale is to get it close and then I measure. But in all fairness, I use a lot of sacrificial fences and jigs.

Jerry-
There are different strengths that key in to different uses and styles in the two fences that that you are trying to compare.

Incra systems key into to minute accurate repeatability. Incra systems revolve around their patented locking system, which enable locking/movements of a known measured amount. Their basic locking system keys in on 1/32" increments. It takes extra time and effort to ensures it's locked into those increments accurately. I see some using it in a careful, watching kind of way to ensure that kind accurate, measured movements.

Biesmeyer keys around industrial strength kind of accuracy and large "movements" to those positions. It has no "increments." It keys in on that smooth movement from point A to B, then a strong secure locking at that point, then the strength in construction to do that for years. I see it's construction being able to take abuse from all-day, everyday industrial/commercial use and stay accurate in it's own designed, intended way.

Both are adjustable within it's own designed purpose of use.

The Biesmeyer does not move in increments, but gets to where you want it quickly and smoothly. Nor do I think of the Incra as being industrial strength, but think of it as being more like a precision instrument. Hard to compare different things, for different uses. Like comparing a miter saw to a meat slicer. Both can be accurate, just in different ways.

I feel August Leyman's adaptation of the Incra TS/LS as an ingenious system that combines both's strengths- Industrial strength... accurate, fast and smooth movement over large measured distances... and machinist's type accuracy.

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post #8 of 12 (permalink) Old 01-25-2013, 01:53 PM
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In all fairness- You are only going to get that kind of accuracy if all other factors stay constant.

For example, you zero in. You change blades. You have a few a little "more or less" runout in that blade... Or the kerf is just a little different. You then need to re-zero your Incra. Other factors settle in also.

I adapt and do thinks on the fly as the job calls for it. That is why it is just faster for me to get close and measure with something I keep there for that use. (To keep that constant.) I can still micro-adjust to get int the finshed cut from there, but I plan for that.

"Don't worry, I saw this work in a cartoon once."
"Usually learning skills and tooling involves a progression of logical steps."
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post #9 of 12 (permalink) Old 01-25-2013, 02:35 PM
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The cursor on my Jet fence, which copies the Biesmeyer design, is very tight to the tape, has a thin red line that is easy to see plus it has a built-in magnifier that enhances its readability. I really like this fence.
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post #10 of 12 (permalink) Old 01-25-2013, 03:26 PM
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OK, the cursor being too high can only be that way if, the guide tube is too low from the table top, and or the guide tube is canted forward "most likely"
That type of fence is very forgiving to an out of wack set up, but, the cursor was not the problem.

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