I’ve been asked about my paper trimmer jig. It’s a pretty simple piece. I have plans to further adapt it but that will have to wait.
I use a fiskars table top rotary cutter. I like rotary blades because they don’t pull and they cut in exactly the same place each time. If I over load the cutter, as I am prone to do, I don’t get pulling or hacked edges, it just won’t cut through the whole stack.

The jig was made with 1/4inch by 3 inch poplar I boughtit for strip framing a few collages on canvas and this was a scrap.

You may note that I’ve drawn a big red stripe down the center of the wood. This is so that I know which side is up on the board. It only fits in one way.

I measured my paper cutter bed, from edge to edge. I cutmy board 1/16th of an inch longer than that measurement. My bed was 12 and a quarter inches high. So I cut my board 12 and 5/16th. I used a fines sanding pad and razor blade to trim off minute shavings until I got my board to fit in so tight it wouldn’t move easily.

When i cut reams of paper in halves I take one sheet of paper and fold it in half and put it on the bed, measureing it against the blade. I then slip my jig into place. I end up with a ream of paper cut neatly in half and pretty near the same size. Reams of lower end paper tend to have a lot of sheets that are 1/16th to 1/32nd of an inch off which messes with everything. I had a hell of a time getting my Wausau paper the same size. I ended up cutting the ream, stacking the sheets and pulling out the nearly half ream that was a screwed up size and cutting a 1/16th of an inch off. It was a major production and it’s a reason I shy away from all the wausau branded paper- including astrobrights. Great colors but not worth the aggravation.

My finall adaptation is to cut 2 slots one at the top and one at the base and coordinating slots in my board. thread screws through the cutter and the board attach washers and wing nuts so that I have a removable but very secure cutting jig. I am however very afraid of damaging the cutter, so that it warps when I lean on it to cut. I dont have any issues with the jig I use now.