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Uni-Fence Aluminum Extrusion Upgrade

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Forum topic by deejay34 posted 06-22-2018 04:23 PM 1247 views 0 times favorited 13 replies Add to Favorites Watch
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deejay34

24 posts in 782 days


06-22-2018 04:23 PM

Topic tags/keywords: uni-fence uni-t-fence peachtree

I am thinking about swapping out the OEM aluminum extrusion on my existing Uni-Fence for the Peachtree Uni-T-Fence to provide a bit more versatility for things like attaching featherboards, hold-downs, sacrificial fence, etc. Based on a bunch of reviews here on LJ’s, it appears that most users of the Uni-T-Fence are rather satisfied with the purchase. However, after reviewing the product information available on Peachtree’s website, there doesn’t seem to be any mention of a straightness or flatness tolerance of the extrusion. I’m curious to know if any owners of the Uni-T-Fence have ever measured the straightness or flatness of the product? For those that may not have the Uni-T-Fence but have upgraded the OEM Uni-Fence using an alternative method (e.g. t-slotted aluminum extrusion from 80/20), what say you on acceptability of other such methods and the corresponding flatness/staightness of the method used?

Any insight would be greatly appreciated.

-- DJ, "It takes a leap of faith to get things going, It takes a leap of faith you gotta show some guts..." - B. Springsteen


13 replies so far

View Gerald Thompson's profile

Gerald Thompson

1105 posts in 2406 days


#1 posted 06-22-2018 05:17 PM

I bought the Peach Tree fence used. It has been worth every penny. The Uni-Fence was too long for my use and if one wanted to use feather boards, et., on it one needed to fabricate it.

-- Jerry

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Rich

3751 posts in 761 days


#2 posted 06-22-2018 05:36 PM

Frankly, I don’t get caught up in thousandths of an inch here and there. I bought the 36” Uni-T-Fence and I love it. Keep in mind, the board rides against the UHMW face. I have no idea what the tolerances are for that material.

The bottom line is it’s flat and straight enough for my projects to fit together perfectly and that’s good enough for me.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

View moke's profile

moke

1253 posts in 2948 days


#3 posted 06-22-2018 06:09 PM

I have had a Saw Stop for 5 years now, and love it, but I came from Craftsman with a Uni fence that I had also gotten the Peach Tree extrusion….I really did like that fence better, that was the only thing I liked better about that saw, but the fence was awesome. The original uni fence was an aluminum extrusion, but the peach tree was a better design…...go for it!!!

I really like Peach Tree products…..they have some innovative stuff. Some one there is thinking!

-- Mike

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Woodknack

12398 posts in 2552 days


#4 posted 06-22-2018 06:20 PM

I always thought it was dumb for Delta to drop the design instead of designing new fences. It really is a fantastic fence.

-- Rick M, http://thewoodknack.blogspot.com/

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Carillon

4 posts in 705 days


#5 posted 06-22-2018 07:15 PM

I recently ordered one and checked it with a quality straightedge when it arrived. Mine is dead flat.

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deejay34

24 posts in 782 days


#6 posted 06-22-2018 10:48 PM

All – Thanks so much for taking the time to provide input from your own personal experiences. I really appreciate the feedback. Sounds like I should pull the trigger on the purchase. Thanks again!

-- DJ, "It takes a leap of faith to get things going, It takes a leap of faith you gotta show some guts..." - B. Springsteen

View BroncoBrian's profile

BroncoBrian

831 posts in 2130 days


#7 posted 06-23-2018 04:06 AM

Here is the alternative: https://vsctools.com/shop/product-category/table-saw-fence/

Looks like the peachtree is going to be great if you buy it.

-- I think they could take sesame seeds off the market and I wouldn't even care. I can't imagine five years from now saying, "Man, remember sesame seeds? What happened? All the buns are blank."

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ScottKaye

694 posts in 2125 days


#8 posted 06-23-2018 05:12 AM

I have one as well and I also have a dial indicator that I use to align the fence to the miter slot. The dial indicator runs along the UHMW so that is the surface I measure. When both ends of the fence are zeroed out on the dial indicator, the middle portion of the strip has a very slight .002 dip near where the blade is. So the fence sits concave to the blade. I always run a splitter so I’m not as worried about the material I’m cutting pinching behind the blade. .002 is fine. I don’t get much burning, especially when using Jessum blade guides. I tried shimming behind the strip but it was next to impossible to accomplish so I just live it. I’ll have to remove the UHMW strip and measure the aluminum behind it.

Scitt

-- "Nothing happens until you build it"

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EarlS

1756 posts in 2520 days


#9 posted 06-23-2018 12:46 PM

I’m a bit late on a reply. I have had this for years and I really like it. I did order a couple extra sets of the UHMW inserts when I bought it. Might as well have them on hand and you re already paying shipping. They also make a Router fence version that is really nice.

One thing I did notice with the fence. The aluminum slightly overhangs the top of the UHMW insert and alumininum meet. It causes pieces that are taller than the UHMW strip to be 1/32” or so thinner than pieces that are shorter due to the overhang. Shims didn’t work so I have gotten used to resetting my Wixey digital readout when I’m cutting pieces that are taller than the UHMW.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

View deejay34's profile

deejay34

24 posts in 782 days


#10 posted 06-23-2018 02:19 PM



One thing I did notice with the fence. The aluminum slightly overhangs the top of the UHMW insert and alumininum meet. It causes pieces that are taller than the UHMW strip to be 1/32” or so thinner than pieces that are shorter due to the overhang. Shims didn t work so I have gotten used to resetting my Wixey digital readout when I m cutting pieces that are taller than the UHMW.

- EarlS

Earl – That’s a really useful piece of information, thanks so much. Just out of curiosity, any idea why the shims didn’t work for bringing the UHMW insert flush with the upper face of the aluminum extrusion? Perhaps the UHMW just compresses too much once you go to tighten back in place?

-- DJ, "It takes a leap of faith to get things going, It takes a leap of faith you gotta show some guts..." - B. Springsteen

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Rich

3751 posts in 761 days


#11 posted 06-23-2018 02:24 PM

I didn’t have the same experience as Earl. His post made me curious so I just went out to the shop and measured mine. On it, the UHMW insert sits about 0.012” proud of the extrusion.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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EarlS

1756 posts in 2520 days


#12 posted 06-23-2018 04:46 PM

The UHMW is flexible enough that shimming around the screws made the face wavy. I would have had to make a size shim to go behind the UHMW to get it flat. I’m guessing that the thickness spec on the UHMW is not tight enough to get an exact thickness so there will always be +/- . Even still, the fence is a HUGE improvement over the original. I also use the Wixey digital readout. The accuracy and repeatibility is much better with a good fence and a digital readout.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

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deejay34

24 posts in 782 days


#13 posted 06-27-2018 11:28 AM



I didn t have the same experience as Earl. His post made me curious so I just went out to the shop and measured mine. On it, the UHMW insert sits about 0.012” proud of the extrusion.

- Rich

Rich – Thanks for checking your fence as well. Makes sense that there could be some variation across the board from one fence to the next given the relative softness of UHMW material and its ability to compress and/or become wavy under fastener point loading when secured to the accompanying aluminum extrusion.


The UHMW is flexible enough that shimming around the screws made the face wavy. I would have had to make a size shim to go behind the UHMW to get it flat. I m guessing that the thickness spec on the UHMW is not tight enough to get an exact thickness so there will always be +/- . Even still, the fence is a HUGE improvement over the original. I also use the Wixey digital readout. The accuracy and repeatibility is much better with a good fence and a digital readout.

- EarlS

Earl – That makes sense as well, in that a full length shim would be required assuming that the UHMW face is out equally, more or less, along the full length of the fence. Good to hear about the overall relative improvement.

-- DJ, "It takes a leap of faith to get things going, It takes a leap of faith you gotta show some guts..." - B. Springsteen

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