Prepare J-Trim for Splices and Inside Corners

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J-Trim install

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What happens here

To create a splice where two pieces of J-trim meet on a straight run, prepare one end by measuring and marking an inch back from the end. Draw a line at a 70-degree angle from this mark. Cut along the 70-degree angle, then use a utility knife to open up the small hem on the back side of the trim. For an inside corner, measure and mark the corner point on the trim. Use a speed square to draw lines all the way around the J-trim at this mark. Then, mark and cut a 45-degree angle from the inside edge of the trim, forming a 'V' shape. Use the utility knife to open up the hem on the back of the J-trim at the cut. This allows the trim to fold neatly for an inside corner.

Goal: Cut and shape J-trim sections for seamless splices and inside corner joints.

Tools and materials

J-Trim — The material being cut and shaped
Pencil — Marking cut lines
Speed Square Milwaukee — Ensuring straight and accurate 45-degree and other angle cuts
Tape Measure — Measuring the cut points
Tin Snips — Cutting the J-trim
Utility Knife — Cutting and opening the hem of the J-trim

What they say

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Now, we got to do our inside corner and a splice. Here's how to join them. Take your utility knife, slip your blade in there, and just open it up. The end that we're going to splice, I measured in an inch and I drew this to like 70° angle. I just go ahead and just cut that corner. Now, when you're up on the ceiling, you have this piece that you open that little hem up, and you have this piece, and they'll just slide right together, and it'll look like that. So, now we got to cut our inside corner. I'm just going to mark all the way around it. Drop a 45 on there. Now that I got this 45 cut out of here and the back cut, I'm going to put my knife in there and open this lip, and now we can take this and fold it right over top, so it looks like that. We're

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