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Miter gauge slot difference - Unisaw

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Forum topic by barecycles posted 06-21-2012 05:57 PM 1292 views 0 times favorited 7 replies Add to Favorites Watch
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barecycles

253 posts in 1081 days


06-21-2012 05:57 PM

Topic tags/keywords: tablesaw

My Unisaw did not come with a miter gauge so I have been using the one from the Shopsmith and it has performed ok, until now. It seems my sawtop has 2 different width slots. I’ve only used the miter gauge in the right hand side slot. Yesterday I moved it to the left hand slot and it would not fit. The T-slot in the right hand slot is 23.6mm, the left hand is 22.8mm. The washer on the miter gauge is 22.9mm.

Is it normal the slots would be different? Appreciate any insight.

-- Sweeping up sawdust in Texas


7 replies so far

View Fred Hargis's profile

Fred Hargis

2047 posts in 1246 days


#1 posted 06-21-2012 07:26 PM

I don’t think they come in different widths, but it may be possible that wear on side would increase it’s width slightly. I measured mine and the were both just a few thousandths over 3/4”. Your difference is on the order of 3/100” of inch ( I think), that strikes me as a lot. It would also seem the left slot would have more wear, which makes your circumstance even more puzzling (at least to me).

-- Our village hasn't lost it's idiot, he was elected to congress.

View Bill White's profile

Bill White

3589 posts in 2713 days


#2 posted 06-21-2012 07:56 PM

The Shopsmith gauge I had on my old bandsaw was adjustable for width. Is yours?
Is an after-market gauge possible?
Bill

-- bill@magraphics.us

View barecycles's profile

barecycles

253 posts in 1081 days


#3 posted 06-21-2012 08:46 PM

The width of the bar can be adjusted, its the washer that rides in the T-slot that is too big. I’ve been putting off getting a new miter gauge, this might just be the thing that sways me.

-- Sweeping up sawdust in Texas

View Fred Hargis's profile

Fred Hargis

2047 posts in 1246 days


#4 posted 06-21-2012 09:38 PM

Oops, now I see…it’s not the width that’s a problem. I have to check again in the morning. I don’t use those washers on mine, so I guess I would have never noticed a difference.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Fred Hargis's profile

Fred Hargis

2047 posts in 1246 days


#5 posted 06-22-2012 04:17 PM

OK, this won’t be of any use…but to keep my word: I measured the width of the T slot on my Uni this morning, and kept it in MM to stay consistent with your original post. The left measured 23.61 mm wide, the right measured 23.6mm, identical for all practical purposes. But there have been so many Unisaws made over the years I would bet such differences as yours (or yours versus mine) are quite normal. One other though: maybe yours has some kind of boogering up right near the end, and the rest of the slot is the 23.6mm???

-- Our village hasn't lost it's idiot, he was elected to congress.

View patron's profile

patron

13182 posts in 2093 days


#6 posted 06-22-2012 04:29 PM

when i got my osborne miter rig
(it has adjustments for width)
i found both slots on my uni-saw
were tight in different places

so i planed a board and put stick-on sand paper #150 grit on it
and ran it back and forth in the slots
favoring one side or the other
until the miter gauge slid through

it’s not perfect
but with screw adjustment
i found a common place
where it works on both slots

slight slop here and there
but over-all not to bad

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View barecycles's profile

barecycles

253 posts in 1081 days


#7 posted 06-22-2012 08:14 PM

Fred: That’s a good point. I went and check it out and the LH slot is pretty consistent at 22.8mm all the way from front to back. It sounds like my RH slot is the “normal” size given that both yours measure comparable to mine. I’m not sure what the deal is.

Patron: I may try that technique and see if I can get that LH T-slot more in line with the RH. Thanks!

-- Sweeping up sawdust in Texas

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