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Help with Martin T71 Slider (1987)

2/6/21       
Drew Z Member

Website: http://www.artifexhome.com

Hi all,

About a year ago I bought a 1987 Martin T71 slider from a retiring cabinetmaker who was in the shop space next to mine. It's been a great upgrade (from a SawStop Professional Series).

I have a good maintenance routine down to keep it running smoothly but am struggling with finding how to adjust a few things:

1. Squareness of rip fence
My rip fence is open at the outfeed side of the table from being square to my sliding table / parallel to my blade. I know some people prefer a slightly open set of the fence but mine is a bit more open than I'd like. It gives me issues if I have the fence pulled back for cross cutting; my panel is tight to the fence at the back of the panel and has about a 1/16" gap at the front. I'd like to tune this up (photo 1; the panel is square and the crosscut fence is square to the blade. I have confirmed the out of square component is the rip fence).

2. Position of crosscut fence (on sliding table).
My crosscut fence seems to have shifted, somehow, to the left. If my stop is set to 24", say, the actual cut is about 24 3/32". There is a tiny amount of adjustment in the view finder left-to-right, not enough to compensate for the difference (photo 2; this is fully adjusted to the left but still off from reality). I can turn my view finder, but this looks bad and isn't as precise as I'd like since it's cocked sideways by a few degrees (photo 3, the bottom of the line in the view finder is correct but it used to be correct with the line plumb, not cockeyed like this).

Any advice would be greatly appreciated on how to adjust the angle of the rip fence and if there's a way to adjust the entire crosscut fence to true up my stops relative to the tape on-board measure. I have tried toying with the bolts and set screws I thought would be helpful but nothing seems to have made any adjustments.

Thank you.


View higher quality, full size image (2016 X 1512)


View higher quality, full size image (2016 X 1512)


View higher quality, full size image (2016 X 1512)

2/6/21       #2: Help with Martin T71 Slider (1987) ...
Thomas Gardiner

With regards tothe cross cut fence, the fence is likely held to the table with a T-nut running in a slot on the bottom of the extrusion. Adjusting the fence is a matter of loosening the bolts under the table and moving the fence over.
The rip fence may be adjusted by adjusting the position of the beam the fence rides on with respect to the table. I don't have a Martin (sadly) but this is the common method of adjustment for other saws.

2/6/21       #3: Help with Martin T71 Slider (1987) ...
TonyF

Drew Z:

I am not familiar with this saw, but have had these problems on other saws.

Rip Fence: First, is the fence straight? It looks like the opening starts a bit down the fence, rather that be a constantly expanding opening from the front of the fence. If it is straight and there is no adjustment for squareness (???) on the front locking mechanism, you might consider shimming the right side of the part of the fence that engages the rails. McMaster Carr has shim stock sets in various sizes and materials, very handy for dealing with older equipment that has logged lots of miles.

Misaligned Stop: If the rail that holds the tape measure has any kind of adjustment, you might loosen the rail and move it so that the the tape measure reads within the range of the stop adjustment. Also, how is the tape measure held to the rail? if it has slipped and has some movement, move it back to read correctly and put a drop of CA on the very end to keep it from sliding again.

I apologize if these answers are obvious to you and you have already tried them, but many times the workable adjustments are just fundamental mechanical corrections that are overlooked.

Hope this helps.
TonyF

2/6/21       #4: Help with Martin T71 Slider (1987) ...
Drew Z Member

Website: http://www.artifexhome.com

Thanks very much Thomas and TonyF.

The rip fence is straight but shimming the outfeed side seems like a very good way to go, I can't seem to adjust the rail/beam where it meets the table to change the skew that way.

I'll try these suggestions in the shop tomorrow on the crosscut fence and see if I can loosen the fence from the underside to slide it over.

Thanks again for your suggestions, very much appreciated.

2/7/21       #5: Help with Martin T71 Slider (1987) ...
Joe Calhoon

My newer T72 has a similar cross fence. The manual shows where to adjust if yours is the same. The manual says do not try to move the tape. See pictures. My older T17 saw has a similar fence also but the tape moves on that one.

No Idea on the rip fence adjustment. Iíve never had to adjust mine. The toe out is very slight on mine. Hardly measurable.
You might try Martin US for info on that.


View higher quality, full size image (2794 X 3725)


View higher quality, full size image (2778 X 3704)

2/10/21       #6: Help with Martin T71 Slider (1987) ...
chris

I have the same saw. Been a real workhorse for me.
On the rip fence there are 2 allen head bolts covered by plastic covers. loosen them to adjust to square.
on the other fence there is a handle underneath the fence at the outer end. Loosen that and see if the fence moves in at all.
hope this helps.
pm with any questions

2/10/21       #7: Help with Martin T71 Slider (1987) ...
Drew Z Member

Website: http://www.artifexhome.com

Thanks both Joe and Chris! Both very helpful. Chris, I will definitely PM you if anything else comes up.

2/11/21       #8: Help with Martin T71 Slider (1987) ...
chris

i have the manuals for mine if you need.

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