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jig for let-in stair stringers

21K views 15 replies 9 participants last post by  Phil P  
#1 ·
This is a modified Festool MFS profile set I use to rout let-ins on stair stringers for winding stairways. This configuration allows for total flexibility in choosing riser heigth/ thickness and tread thickness and especially depth. The varying wedge shape of Winding stair treads require variation in depth depending on their location on the run. the extra length of the profile "legs" provide for easy clamping.
 

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#3 ·
Assuming you mean the MFS profiles, both. Two 700mm. four 400mm. and a 30mm copy ring in the OF1400 router+ a CMT 12mm upright spiral bit.
What makes the jig custom is that top 700mm mfs profile is tapped at both ends for perpendicular connection to another profile.
 
#6 ·
Thanks, Wild Horse.
I take interesting stairway jobs when they come my way, but I do most of the work on site so my profit margin is not that great(gas money). The jig above can be easily disassembled and reconfigured to do any number of router related jobs. I'll poke around and find some more jig pictures and post them later.

gallianp-
Not quite sure what your'e cracking up over, but that's just as well as long as your'e happy....
 
#8 ·
The birch newell post pictured is full length, floor to cap- although hidden by the 5th stringer. The curved bottom run of steps + 5th stringer were an extra-added in after the initial design and I had already cal'cd everything. Hard to explain, but it worked out well it the end. Too bad it was a new house in "modern" style, everything was painted white.
 
#12 · (Edited)
#15 ·
The Rockwell jigs look interesting, the first I've seen besides the aluminum one that I use that allows for adjustment of tread/riser thickness. It appears that the tread nose can be changed out for different radii?
Plywood/ shop-made jigs are great, I tend to make them oversized to leave room for the use of clamps, and to accommodate for the extra depth (over 2 feet most of the time) of the tread in the outside stringer at the mid-point of the "bend", as most of my stairjobs are winders. Interior straight stairways with landings are rare in Scandinavia. Most houses have single or double "winds" to change direction.
 
#16 ·
How do you set-up the wedge on the housings?

Regards

Phil