[pete lynch]

Hi, everybody.
This is my 1st post here. I have been doing carpentry for over 30 years but I’m always looking for new ideas.

Has anyone ever come up with an idea for a taper jig that will work with longer pieces of window jamb stock, like 60” or more? I don’t have a home shop (so no place to plan out a proper jig) and I use a piece of plywood and screw the jamb piece to plywood to get the taper I need. This does the job but leaves holes to fill and takes time to set up.

The reason I need to cut window jamb extensions on a taper is that my company has been using the Tyvek window wrap system and it leaves the window out a little bit farther on the bottom than the top, thus creating the need for a tapered jamb ext.

I have seen some good shop-built jigs on the web but they are mostly for table legs and furniture pieces.

I welcome any ideas and will share any I come up with.
TIA
pete lynch

FYI: I recently posted the above at lumberjocks.com forum. Just asking as many knowledgeable folks as I can.:smile:

 

[pete lynch]

....Another way to taper a jamb (a single board) is to make a sled for the radial arm saw. Scribe the taper...then pin the board to the sled. First, saw a shallow curf in the sled...then align the taper cut to the shallow curf. I guess that could also be done on the table saw. Hope this helps Rick

Hi, Rick. Thanks for the ideas. All this work is done on-site so we don't have the luxury of having a radial saw ( loading/unloading). It has to be done with a table saw for reasons of production time, etc.
pete lynch

 

[pete lynch]

Pete, The plywood method is the way I have been doing them. It is quick and safer (I feel) than the freehand method which I have also done. I use 1/4" luan (sp.?) plywood because it is cheap. If I am ripping 1x stock, then I use 1/2" drywall scews and make sure I screw to the backside so there are no holes to fill. I have ripped tapers up to 8 feet.

mlightfoot, I have done it exactly the way you describe when doing extension jambs on exterior doors. I have made a short taper jig with 1/2" ac plywood and toggle clamps on 3/4" ply' blocks. It works well for most of my needs. :yes: