Magnetic Frame Snaps together and pulls apart, so changing photos is easy.  This frame consists of four identical corner sections that assemble around the glass, photo and back board (Fig. D). Rare earth magnets hold the sections together. To make this frame, you’ll need a routing jig (Fig. E), a pattern and two pieces of 3/4-in. (or thicker) stock cut to 4-1/16-in. by 4-9/16-in. rectangles. Build the routing jig first. It’s used to rout the inside edge of each piece as well as the grooves that house the photo assembly. Use the jig to make the pattern. Saw a 3-1/16-in. by 4-1/16-in. piece of 1/2-in. MDF into an Lshape. Install it in the jig and rout the inside edges with a 1- in.-dia. pattern bit (a flush-trim bit with the bearing mounted above the cutting flutes). Use the pattern to lay out the frame pieces on the two blanks (Photo 1). Cut the short legs to length (Photo 2). Then cut the blanks apart on the bandsaw, install them in the jig and rout the inside edges (Photos 3 and 4). Install a 3/16-in.- wide slot cutter and rout a 1/2-in. deep slot for the photo assembly (glass, photo and back board) in each piece (Photo 5). The photo assembly provides the frame’s structure, so it must fit the slot snugly, but without binding. Size the slot’s width to fit the thickness of your photo assembly (for single-strength glass and a 1/8-in. back board, the slot will be slightly less than 1/4-in.-wide). Fill the slots to fit the photo assembly (Photo 6). Before you glue in the strips, assemble the frame around the assembly to test the fit. After gluing, flush each strip with the end. Then drill centered holes for the rare-earth magnets (Photo 7) and install them flush with the ends—make sure to orient the magnets’ poles correctly! Secure the magnets with epoxy. Fig. D: Exploded View  Fig. E: Jig for Routing Inside Edges 
| | 1. Lay out two corner sections on each blank. Make sure the grain runs across the outside corner. If it runs toward the corner, as on the blank in the background, the pieces will be impossible to rout.  2.Cut the short legs to final length using the miter gauge with a fence and a stop. Caution: The blade guard must be removed for this operation. Be careful!  3. Rout the inside edges with a 1-in.-dia. pattern bit. Because of the grain’s direction, you can only rout one leg at a time. Stop before the bit touches the adjacent leg or disastrous tearout will occur.  4. Flip the workpiece over to rout the other leg. Routing into the corner can still cause tearout, so complete the job in stages. Rout a bit, flip the workpiece and rout a bit more. Then repeat the process.  5. Rout a centered slot in each piece. Center the bit by eye. Then make two passes, one on each face. Rout halfway, as before, then flip the workpiece. Once the slot is established, you can rout against the grain to widen it.  6. Reduce the slots’ depth to 3/16-in. by gluing in fill strips. Leave the inside corner 1/2-in. deep, to accommodate the square corners of the glass.  7. Drill holes for the rare earth magnets using a fence and a stop block. The fence centers the hole between the faces; the stop block centers it between the edges. |